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Ma B, Xu M, Yang L, Huang X, Wang P, Ji Y, Ma K. Effect of intramuscular diazepam infusion on herpes zoster-related pain in older patients: a randomized, double-blind, placebo-controlled trial. BMC Anesthesiol 2024; 24:193. [PMID: 38811866 PMCID: PMC11134619 DOI: 10.1186/s12871-024-02576-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2023] [Accepted: 05/24/2024] [Indexed: 05/31/2024] Open
Abstract
OBJECTIVES This study evaluated the effectiveness, psychological effects, and sleep quality using intramuscular diazepam infusion compared with placebo in patients with herpes zoster (HZ)-related pain. METHODS The patients were randomized to either the diazepam or control group. The diazepam group received an intramuscular injection of diazepam for 3 consecutive days, while the control group received an intramuscular injection of 0.9% normal saline. The primary outcome was pain relief on posttreatment day 4, as measured using the Visual Analog Scale (VAS). Moreover, anxiety and depression were evaluated using the Generalized Anxiety Disorder-7 (GAD7) and Patient Health Questionnaire-9 (PHQ9), respectively. Sleep quality was assessed using the Pittsburgh Sleep Quality Index (PSQI). RESULTS In total, 78 patients were enrolled in the trial. The mean differences in VAS scores between the two groups were 0.62 (P = 0.049) on posttreatment day 3 and 0.66 (P = 0.037) on posttreatment day 4. The effective rates of pain management in the diazepam group ranged from 10.26 to 66.67%, which were higher than those in the control group on posttreatment days 3 and 4 (P < 0.05). The mean difference in PSQI scores between the diazepam and control groups was 1.36 (P = 0.034) on posttreatment day 7. No differences were found in the incidence of analgesia-adverse 1reactions between the diazepam and placebo groups. CONCLUSIONS The intramuscular injection of diazepam for 3 consecutive days provides effective pain management and improves the quality of life. Our study suggests that diazepam is more effective than the placebo in patients with HZ-related pain. TRIAL REGISTRATION The study was prospectively registered at https://www.isrctn.com/trialist(Registration date: 24/01/2018; Trial ID: ISRCTN12682696).
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Affiliation(s)
- Bingjie Ma
- Department of Pain management, Xinhua Hospital Affiliated to Shanghai Jiaotong University School of Medicine, Shanghai, 200092, China
| | - Meiling Xu
- Department of Pain management, The Fifth People's Hospital of Qinghai Province, Xining city, 810007, Qinghai province, China
| | - Lu Yang
- Department of Anesthesiology, Shanghai JiaoTong University Affiliated Sixth People's Hospital, Shanghai, 200235, China
| | - Xuehua Huang
- Department of Pain management, Xinhua Hospital Affiliated to Shanghai Jiaotong University School of Medicine, Shanghai, 200092, China
| | - Peiliang Wang
- Department of Pain management, Xinhua Hospital Affiliated to Shanghai Jiaotong University School of Medicine, Shanghai, 200092, China
| | - Yun Ji
- Department of Pain management, Xinhua Hospital Affiliated to Shanghai Jiaotong University School of Medicine, Shanghai, 200092, China
| | - Ke Ma
- Department of Pain management, Xinhua Hospital Affiliated to Shanghai Jiaotong University School of Medicine, Shanghai, 200092, China.
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Levy Gigi E, Rachmani M, Defrin R. The relationship between traumatic exposure and pain perception in children: the moderating role of posttraumatic symptoms. Pain 2024:00006396-990000000-00599. [PMID: 38728536 DOI: 10.1097/j.pain.0000000000003266] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2023] [Accepted: 03/07/2024] [Indexed: 05/12/2024]
Abstract
ABSTRACT Adverse childhood experiences (ACEs) affect approximately half of all children worldwide. These experiences have been linked to increased pain sensitivity in adulthood and a higher likelihood of developing severe chronic pain. However, most studies have assessed the effects of ACEs retrospectively, long after they occurred, leaving room for other factors to influence the observed outcomes. We investigated, for the first time, the association between ACEs and concurrent pain perception among young children who live in a conflict zone and are consistently exposed to potentially traumatic experiences. Participants were 60 elementary school children (ages 8-11 years) living in conflict regions (n = 39) or nonconflict regions (n = 21). Posttraumatic stress symptom (PTSS) severity, traumatic exposure, pressure pain threshold (PPT), and mechanical detection threshold (MDT) were measured. Trauma-exposed children had significantly lower PPT than did controls, but MDT was similar across groups. Pressure pain threshold correlated positively with proximity to the conflict zone and inversely with traumatic exposure magnitude and PTSS severity. In addition, PTSSs moderated the relationship between repeated traumatic exposure and PPT. Children with higher PTSS severity displayed pain hypersensitivity regardless of their traumatic exposure level, whereas in children with lower PTSS severity, greater traumatic exposure correlated with pain hypersensitivity. The results suggest that ACEs among children lead to concurrent pain hypersensitivity and distress and may put them at elevated risk of chronic pain early in life. In addition, our findings emphasize the need for identifying children with various PTSS levels to provide tailored interventions and mitigate the long-term negative effects of ACEs.
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Affiliation(s)
- Einat Levy Gigi
- Faculty of Education, Bar-Ilan University, Ramat Gan, Israel
- The Gonda Multidisciplinary Brain Research Center, Bar-Ilan University, Ramat Gan, Israel
| | - Moriya Rachmani
- Faculty of Education, Bar-Ilan University, Ramat Gan, Israel
| | - Ruth Defrin
- Department of Physical Therapy, Faculty of Medicine & Sagol School of Neuroscience, Tel Aviv University, Tel Aviv, Israel
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3
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Tu FF, Hellman KM, Darnell SE, Harber KA, Bohnert AM, Singh L, Walker LS. A multidimensional appraisal of early menstrual pain experience. Am J Obstet Gynecol 2024; 230:550.e1-550.e10. [PMID: 38290643 DOI: 10.1016/j.ajog.2024.01.017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2023] [Revised: 12/01/2023] [Accepted: 01/21/2024] [Indexed: 02/01/2024]
Abstract
BACKGROUND Symptomatic dysmenorrhea is a global problem, affecting more than 40% of menstruating persons. Cross-sectional studies have implicated psychosocial, biological, and sensory factors in dysmenorrhea but the mechanisms are not fully understood. Only a few prospective longitudinal studies have evaluated such factors in relation to the emergence and course of dysmenorrhea at menarche. OBJECTIVE This study aimed to describe the initial menstruation experience and to evaluate the association of premenarchal psychosocial and sensory factors with the intensity of dysmenorrhea during the period in the fourth month. STUDY DESIGN This was a prospective cohort study of adolescents who completed premenarchal assessments and postmenarchal daily menstrual diaries for their first (n=149) and fourth month periods (n=114). They were recruited shortly before menarche and completed baseline assessments, including psychosocial questionnaires and experimental pain sensitivity (pressure testing, bladder provocation), and their parents completed related pain questionnaires. The relation between the hypothesized premenarchal factors and month 4 dysmenorrhea intensity was evaluated using Kruskal-Wallis and chi-square tests for low (<3 on a 0-10 scale) vs higher (≥3) menstrual pain groups based on maximal pain ratings recorded in a daily diary. RESULTS Low levels of dysmenorrhea characterized the first (median, 1; interquartile range, 0-2) and fourth month periods (1; 0-3). Maximal pain ratings increased from the first to the fourth period (3; 1-5 vs 4; 1-6; P=.007). The distribution of dysmenorrhea was multimodal at month 4 with 31.6% of the participants having low levels of maximal pain (1; 0-1) and 68.4% having higher levels (5; 4-6; Hartigan's dip test P<.001). The baseline demographic, psychosocial, and parental pain characteristics were not associated with the development of worse dysmenorrhea. The baseline experimental pain sensitivity, based on pressure pain thresholds, did not differ between the low (15.7 N; 12.5-22.3) and higher (15.0 N; 10.9-21.4]) level dysmenorrhea groups. Baseline bladder pain at first urge also did not differ (low, 6; 0-20 vs higher, 7; 0-19). CONCLUSION By their fourth month period, two-thirds of adolescents fell into the higher group for maximal dysmenorrhea, half reported some related impairments in physical activity, and one-seventh reported some related school absence. Premenarchal factors (experimental pain sensitivity, psychosocial profile, parental pain experience) linked to chronic pain emergence in the adult literature did not predict dysmenorrhea intensity, suggesting the dominant factor at menarche may be peripheral afferent activation. Further research is needed to understand the evolution of psychosocial and sensory mechanisms in the development and course of dysmenorrhea.
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Affiliation(s)
- Frank F Tu
- Department of Obstetrics and Gynecology, NorthShore University HealthSystem, Evanston, IL; Department of Obstetrics and Gynecology, Pritzker School of Medicine, University of Chicago, Chicago, IL.
| | - Kevin M Hellman
- Department of Obstetrics and Gynecology, NorthShore University HealthSystem, Evanston, IL; Department of Obstetrics and Gynecology, Pritzker School of Medicine, University of Chicago, Chicago, IL
| | - Sarah E Darnell
- Department of Obstetrics and Gynecology, NorthShore University HealthSystem, Evanston, IL
| | - Kaela A Harber
- Department of Obstetrics and Gynecology, NorthShore University HealthSystem, Evanston, IL
| | - Amy M Bohnert
- Department of Psychology, Loyola University Chicago, Chicago, IL
| | - Lavisha Singh
- Department of Biostatistics, NorthShore University HealthSystem, Evanston, IL
| | - Lynn S Walker
- Department of Psychology, Vanderbilt University, Nashville, TN
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Tham SW, Li R, Edwards RR, Palermo TM. Pain Catastrophizing Moderates the Relationship Between Pain Sensitivity and Clinical Pain in Adolescents With Functional Abdominal Pain. THE JOURNAL OF PAIN 2024:104549. [PMID: 38657783 DOI: 10.1016/j.jpain.2024.104549] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/12/2023] [Revised: 03/21/2024] [Accepted: 04/16/2024] [Indexed: 04/26/2024]
Abstract
Pain catastrophizing has been linked to amplified pain sensitivity assessed using quantitative sensory testing (QST) in adults; pediatric data are limited, particularly in youth with functional abdominal pain (FAP). With increasing use of QST to evaluate somatosensory function and predict pain outcomes, we examined the associations between QST and clinical pain in adolescents with FAP and tested the moderating effects of pain catastrophizing. Seventy-seven adolescents (mean age 16.6 years, 85.7% female, 72.7% White, 90.8% non-Hispanic) who fulfilled diagnostic criteria for FAP completed QST assessment (pressure pain threshold and tolerance, heat pain threshold, conditioned pain modulation) and measures of abdominal pain intensity, pain interference, and pain catastrophizing. Adjusting for age and sex, only higher heat pain threshold was associated with higher abdominal pain intensity (Beta per 1-standard deviation = .54, P = .026). Contrary to hypothesis, for youth with higher pain catastrophizing, higher pressure pain tolerance was associated with greater abdominal pain intensity, but associations were not significant for youth with lower catastrophizing (P = .049). Similarly, for those with higher pain catastrophizing (in contrast to lower pain catastrophizing), higher pressure pain thresholds and tolerance were associated with higher pain interference (P = .039, .004, respectively). Results highlight the need to investigate the influence of pain catastrophizing on QST. PERSPECTIVE: This study demonstrated unexpected findings of pain catastrophizing moderating the relationships between pressure pain threshold and tolerance, and clinical pain in adolescents with FAP. This raised questions regarding our understanding of psychological contributions to QST findings in pediatric populations with chronic pain.
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Affiliation(s)
- See Wan Tham
- Department of Anesthesiology and Pain Medicine, University of Washington School of Medicine, Seattle, Washington; Center for Child Health, Behavior and Development, Seattle Children's Research Institute, Seattle, Washington
| | - Rui Li
- Department of Anesthesiology and Pain Medicine, University of Washington School of Medicine, Seattle, Washington; Center for Child Health, Behavior and Development, Seattle Children's Research Institute, Seattle, Washington
| | - Robert R Edwards
- Department of Anesthesiology, Perioperative and Pain Medicine, Harvard Medical School, Brigham and Women's Hospital, Massachusetts
| | - Tonya M Palermo
- Department of Anesthesiology and Pain Medicine, University of Washington School of Medicine, Seattle, Washington; Center for Child Health, Behavior and Development, Seattle Children's Research Institute, Seattle, Washington
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Sommer C, Baron R, Sachau J, Papagianni A, Özgül ÖS, Enax-Krumova E. [The EAN-NeuPSIG guideline on the diagnosis of neuropathic pain-a summary]. Schmerz 2024:10.1007/s00482-024-00806-0. [PMID: 38602515 DOI: 10.1007/s00482-024-00806-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/03/2024] [Indexed: 04/12/2024]
Abstract
In this joint guideline of the scientific societies and working groups mentioned in the title, evidence-based recommendations for the use of screening questionnaires and diagnostic tests in patients with neuropathic pain were developed. The systematic literature search and meta-analysis yielded the following results: Of the screening questionnaires, Douleur Neuropathique en 4 Questions (DN4), I‑DN4 (self-administered DN4), and Leeds Assessment of Neuropathic Symptoms and Signs (LANSS) received a strong recommendation, while S‑LANSS (self-administered LANSS) and PainDETECT received weak recommendations for their use in the diagnostic workup of patients with possible neuropathic pain. There was a strong recommendation for the use of skin biopsy and a weak recommendation for quantitative sensory testing and nociceptive evoked potentials. The role of confocal corneal microscopy is still unclear. Functional imaging and peripheral nerve blocks are helpful in elucidating the pathophysiology, but current literature does not support their use in diagnosing neuropathic pain. In selected cases, genetic testing in specialized centers may be considered.
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Affiliation(s)
- Claudia Sommer
- Neurologische Klinik, Universitätsklinikum Würzburg, 97080, Würzburg, Deutschland.
| | - Ralf Baron
- Sektion Neurologische Schmerzforschung und -therapie, Klinik für Neurologie, Universitätsklinikum Schleswig-Holstein, Campus Kiel, Kiel, Deutschland
| | - Juliane Sachau
- Sektion Neurologische Schmerzforschung und -therapie, Klinik für Neurologie, Universitätsklinikum Schleswig-Holstein, Campus Kiel, Kiel, Deutschland
| | | | - Özüm S Özgül
- Neurologische Klinik und Poliklinik, Berufsgenossenschaftliches Universitätsklinikum Bergmannsheil gGmbH, Ruhr-Universität Bochum, Bochum, Deutschland
| | - Elena Enax-Krumova
- Neurologische Klinik und Poliklinik, Berufsgenossenschaftliches Universitätsklinikum Bergmannsheil gGmbH, Ruhr-Universität Bochum, Bochum, Deutschland
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Lucas R, Talih M, Soares S, Fraga S. Bullying Involvement and Physical Pain Between Ages 10 and 13 Years: Reported History and Quantitative Sensory Testing in a Population-Based Cohort. THE JOURNAL OF PAIN 2024; 25:1012-1023. [PMID: 37914095 DOI: 10.1016/j.jpain.2023.10.022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/05/2023] [Revised: 10/06/2023] [Accepted: 10/21/2023] [Indexed: 11/03/2023]
Abstract
We aimed to quantify the prospective association between bullying and physical pain in a population-based cohort of adolescents. We assessed 4,049 participants of the 10 and 13 years waves of the Generation XXI birth cohort study in Portugal. Pain history was collected using the Luebeck pain screening questionnaire. A subsample of 1,727 adolescents underwent computerized cuff pressure algometry to estimate pain detection/tolerance thresholds, temporal pain summation and conditioned pain modulation. Participants completed the Bully Scale Survey and were classified as "victim only", "both victim and aggressor", "aggressor only", or "not involved". Associations were quantified using Poisson or linear regression, adjusted for sex and adverse childhood experiences. When compared to adolescents "not involved", participants classified as "victim only" or "both victim and aggressor" at age 10 had higher risk of pain with psychosocial triggers, pain that led to skipping leisure activities, multisite pain, pain of higher intensity, and pain of longer duration, with relative risks between 1.21 (95% confidence interval: .99, 1.49) and 2.17 (1.57, 3.01). "Victims only" at age 10 had lower average pain detection and tolerance thresholds at 13 years (linear regression coefficients: -1.81 [-3.29, -.33] and -2.73 [-5.17, -.29] kPa, respectively), as well as higher pain intensity ratings (.37 [.07, .68] and .39 [.06, .72] mm), when compared with adolescents not involved. No differences were seen for the remaining bullying profiles or sensory measures. Our findings suggest that bullying may have long-term influence on the risk of chronic musculoskeletal pain and may interfere with responses to painful stimuli. PERSPECTIVE: We found prospective evidence that bullying victimization in youth: 1) is more likely to lead to negative reported pain experiences than the reverse, 2) may have long-term influence on adverse pain experiences, and 3) may contribute to pain phenotypes partly by interfering with somatosensory responses to painful stimuli.
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Affiliation(s)
- Raquel Lucas
- EPIUnit, Instituto de Saúde Pública, Universidade do Porto, Porto, Portugal; Laboratório para a Investigação Integrativa e Translacional em Saúde Populacional (ITR), Universidade do Porto, Porto, Portugal; Department of Population Studies, Instituto de Ciências Biomédicas Abel Salazar, Universidade do Porto, Porto, Portugal
| | - Makram Talih
- EPIUnit, Instituto de Saúde Pública, Universidade do Porto, Porto, Portugal; Laboratório para a Investigação Integrativa e Translacional em Saúde Populacional (ITR), Universidade do Porto, Porto, Portugal; Department of Public Health and Forensic Sciences, and Medical Education, Faculdade de Medicina, Universidade do Porto, Porto, Portugal
| | - Sara Soares
- EPIUnit, Instituto de Saúde Pública, Universidade do Porto, Porto, Portugal; Laboratório para a Investigação Integrativa e Translacional em Saúde Populacional (ITR), Universidade do Porto, Porto, Portugal
| | - Sílvia Fraga
- EPIUnit, Instituto de Saúde Pública, Universidade do Porto, Porto, Portugal; Laboratório para a Investigação Integrativa e Translacional em Saúde Populacional (ITR), Universidade do Porto, Porto, Portugal; Department of Public Health and Forensic Sciences, and Medical Education, Faculdade de Medicina, Universidade do Porto, Porto, Portugal
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7
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Brandão M, Talih M, Holden S, Fernandes F, Graven-Nielsen T, Lucas R. Pain history and experimental pressure pain responses in adolescents: Results from a population-based birth cohort. Eur J Pain 2024; 28:70-82. [PMID: 37485565 DOI: 10.1002/ejp.2159] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2022] [Revised: 06/23/2023] [Accepted: 07/05/2023] [Indexed: 07/25/2023]
Abstract
BACKGROUND Sensitized pain mechanisms are often reported in musculoskeletal pain conditions, but population-based paediatric studies are lacking. We assessed whether adolescents with musculoskeletal pain history had evidence of increased responsiveness to experimental pressure stimuli. METHODS Data were from 1496 adolescents of the Generation XXI birth cohort. Pain history was collected using the Luebeck Pain Questionnaire (self-reported at 13, parent-reported at 7 and 10 years). Two case definitions for musculoskeletal pain were considered: (1) cross-sectional-musculoskeletal pain lasting more than 3 months at age 13 and (2) longitudinal-musculoskeletal pain at age 13 with musculoskeletal pain reports at ages 7 and/or 10. Lower limb cuff pressure algometry was used to assess pain detection and tolerance thresholds, conditioned pain modulation effects (CPM, changes in thresholds in the presence on painful conditioning) and temporal summation of pain effects (TSP, changes in pain intensity to 10 phasic painful cuff stimulations). RESULTS Adolescents with musculoskeletal pain at age 13 plus a history of pain in previous evaluations (longitudinal definition) had lower pain tolerance thresholds compared to the remaining sample (40.2 v. 49.0 kPa, p = 0.02), but showed no differences in pain detection threshold, CPM effect and TSP effect. Pain sensitivity, CPM effects and TSP effects were not significantly different when the current pain only case definition (cross-sectional) was used. CONCLUSIONS Adolescents with current musculoskeletal pain who had a history of pain since childhood had lower tolerance to cuff stimulation. This may suggest long-standing musculoskeletal pain since childhood may contribute to sensitisation, rather than the presence of current pain only. SIGNIFICANCE Repeated musculoskeletal pain up to age 13 years may contribute to higher pain sensitivity (particularly lowered pressure pain tolerance) in the general adolescent population. This does not seem to be the case when reported pain experiences are recent or when the outcomes are temporal pain summation or CPM. In this community-based paediatric sample, the vast majority showed no sign of altered pain processing, but a small fraction may reveal some pain sensitization at 13 years of age.
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Affiliation(s)
- Maria Brandão
- EPIUnit - Instituto de Saúde Pública, Universidade do Porto, Porto, Portugal
- Laboratório Para a Investigação Integrativa e Translacional em Saúde Populacional (ITR), Universidade do Porto, Porto, Portugal
| | - Makram Talih
- EPIUnit - Instituto de Saúde Pública, Universidade do Porto, Porto, Portugal
- Laboratório Para a Investigação Integrativa e Translacional em Saúde Populacional (ITR), Universidade do Porto, Porto, Portugal
- Faculdade de Medicina, Universidade do Porto, Porto, Portugal
| | - Sinead Holden
- Center for Neuroplasticity and Pain (CNAP), Aalborg University, Copenhagen, Denmark
| | - Francisco Fernandes
- EPIUnit - Instituto de Saúde Pública, Universidade do Porto, Porto, Portugal
- Laboratório Para a Investigação Integrativa e Translacional em Saúde Populacional (ITR), Universidade do Porto, Porto, Portugal
- Faculdade de Medicina, Universidade do Porto, Porto, Portugal
| | | | - Raquel Lucas
- EPIUnit - Instituto de Saúde Pública, Universidade do Porto, Porto, Portugal
- Laboratório Para a Investigação Integrativa e Translacional em Saúde Populacional (ITR), Universidade do Porto, Porto, Portugal
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Li R, Holley AL, Palermo TM, Ohls O, Edwards RR, Rabbitts JA. Feasibility and reliability of a quantitative sensory testing protocol in youth with acute musculoskeletal pain postsurgery or postinjury. Pain 2023; 164:1627-1638. [PMID: 36727891 PMCID: PMC10277219 DOI: 10.1097/j.pain.0000000000002865] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2022] [Accepted: 12/16/2022] [Indexed: 02/03/2023]
Abstract
ABSTRACT Quantitative sensory testing (QST) is increasingly used in pediatric chronic pain; however, assessment in youth with acute musculoskeletal (MSK) pain is limited. This study evaluated the feasibility, reliability, and sources of variability of a brief QST protocol in 2 clinical samples of youth with acute MSK pain. Participants were 277 youth (M age = 14.5 years, SD = 2.0, range = 11-18 years, 59% female, 81% non-Hispanic) across 3 geographic study sites who completed a QST protocol assessing pressure and thermal pain sensitivity, temporal summation of pain, and conditioned pain modulation 8 weeks after MSK surgery (n = 100) or within 4 weeks after an acute MSK injury (n = 177). High feasibility was demonstrated by protocol completion rates ranging from 97.5% to 100% for each task, with 95.3% of youth completing all tasks. Reliability was high, with reliability coefficients of >0.97 for 7 out of 8 QST parameters and minimal influence of examiner or participating site effects. Younger youth had lower pressure and heat pain thresholds (11-12 vs 13-18 years, d = -0.80 to -0.56) and cold pain tolerance (d = -0.33). Hispanic youth had higher pressure and heat pain thresholds (d = 0.37-0.45) and pain ratings for cold pain tolerance (d = 0.54) compared with non-Hispanic youth. No significant differences were observed in QST values by sex or personal contextual factors at the time of assessment (momentary pain, menstrual period, use of pain medications). Overall findings demonstrate feasibility of a brief QST protocol with youth with diverse acute MSK pain and data provide initial support for the reliability of this QST protocol for multisite research studies.
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Affiliation(s)
- Rui Li
- Center for Child Health, Behavior & Development, Seattle Children’s Research Institute, Seattle, WA, United States
| | - Amy L. Holley
- Division of Psychology, Department of Pediatrics, Oregon Health and Science University (OHSU), Portland, OR, United States
| | - Tonya M. Palermo
- Center for Child Health, Behavior & Development, Seattle Children’s Research Institute, Seattle, WA, United States
- Department of Anesthesiology & Pain Medicine, University of Washington School of Medicine, Seattle, WA, United States
| | - Olivia Ohls
- Center for Child Health, Behavior & Development, Seattle Children’s Research Institute, Seattle, WA, United States
| | - Robert R. Edwards
- Department of Anesthesiology, Perioperative and Pain Medicine, Brigham and Women’s Hospital, Harvard Medical School, Massachusetts, United States
| | - Jennifer A. Rabbitts
- Department of Anesthesiology & Pain Medicine, University of Washington School of Medicine, Seattle, WA, United States
- Center for Clinical and Translational Research, Seattle Children’s Research Institute, Seattle, Washington, United States
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Nahman-Averbuch H, Li R, Boerner KE, Lewis C, Garwood S, Palermo TM, Jordan A. Alterations in pain during adolescence and puberty. Trends Neurosci 2023; 46:307-317. [PMID: 36842946 DOI: 10.1016/j.tins.2023.01.006] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2022] [Revised: 01/16/2023] [Accepted: 01/27/2023] [Indexed: 02/26/2023]
Abstract
During adolescence and puberty, alterations in pain, both experimental and clinical, are observed. In addition, adolescents undergo extensive biopsychosocial changes as they transition from childhood to adulthood. However, a better understanding of how the biopsychosocial changes during adolescence impact pain is needed to improve pain management and develop targeted pain interventions for adolescents. This review synthesizes the literature on alterations in pain during adolescence in humans, describes the potential biopsychosocial factors impacting pain during adolescence, and suggests future research directions to advance the understanding of the impact of adolescent development on pain.
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Affiliation(s)
- Hadas Nahman-Averbuch
- Washington University Pain Center and Division of Clinical and Translational Research, Department of Anesthesiology, Washington University in St Louis School of Medicine, St. Louis, MO, USA.
| | - Rui Li
- Center for Child Health, Behavior and Development, Seattle Children's Research Institute, Seattle, WA, USA
| | - Katelynn E Boerner
- Department of Pediatrics, University of British Columbia, and BC Children's Hospital Research Institute, Vancouver, BC, Canada
| | - Christopher Lewis
- Division of Endocrinology and Diabetes, Department of Pediatrics, Washington University in St. Louis, St. Louis, MO, USA; Transgender Center at St. Louis Children's Hospital, Washington University School of Medicine, St. Louis, MO, USA
| | - Sarah Garwood
- Transgender Center at St. Louis Children's Hospital, Washington University School of Medicine, St. Louis, MO, USA
| | - Tonya M Palermo
- Center for Child Health, Behavior and Development, Seattle Children's Research Institute, Seattle, WA, USA; Department of Anesthesiology and Pain Medicine, University of Washington School of Medicine, Seattle, WA, USA
| | - Abbie Jordan
- Department of Psychology and Centre for Pain Research, University of Bath, Bath, United Kingdom
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10
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We need to talk: The urgent conversation on chronic pain, mental health, prescribing patterns and the opioid crisis. J Psychopharmacol 2023; 37:437-448. [PMID: 37171242 DOI: 10.1177/02698811221144635] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/24/2023]
Abstract
The opioid crisis’ pathways from first exposure onwards to eventual illnesses and fatalities are multiple, intertwined and difficult to dissect. Here, we offer a multidisciplinary appraisal of the relationships among mental health, chronic pain, prescribing patterns worldwide and the opioid crisis. Because the opioid crisis’ toll is especially harsh on young people, emphasis is given on data regarding the younger strata of the population. Because analgesic opioid prescription constitute a recognised entry point towards misuse, opioid use disorder, and ultimately overdose, prescribing patterns across different countries are examined as a modifiable hazard factor along these pathways of risk. Psychiatrists are called to play a more compelling role in this urgent conversation, as they are uniquely placed to provide synthesis and lead action among the different fields of knowledge and care that lie at the crossroads of the opioid crisis. Psychiatrists are also ideally positioned to gauge and disseminate the foundations for diagnosis and clinical management of mental conditions associated with chronic pain, including the identification of hazardous and protective factors. It is our hope to spark more interdisciplinary exchanges and encourage psychiatrists worldwide to become leaders in an urgent conversation with interlocutors from the clinical and basic sciences, policy makers and stakeholders including clients and their families.
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11
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Sex-related differences in experimental pain sensitivity in subjects with painful or painless neuropathy after surgical repair of traumatic nerve injuries. Pain Rep 2022; 7:e1033. [PMID: 36284797 PMCID: PMC9586924 DOI: 10.1097/pr9.0000000000001033] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2021] [Revised: 05/10/2022] [Accepted: 07/17/2022] [Indexed: 12/01/2022] Open
Abstract
Higher pain intensities at all experimental stimuli but a tendency to faster recovery after cold conditioning stimuli were seen in women with neuropathy in comparison with men. Introduction: Sex-related influences represent a contributor to greater pain sensitivity and have a higher prevalence of many chronic pain conditions, including neuropathic pain (NP), among women. Objectives: The aim was to analyze how differences in ongoing pain, experimental pain intensity, and conditioned pain modulation (CPM) relate to sex in subjects with neuropathy after traumatic nerve injuries. Methods: Endogenous pain modulation was compared between male (n = 77) and female (n = 55) subjects and between subjects with NP (female = 31, male = 39) and pain-free subjects with posttraumatic neuropathy (female = 24, male = 38). Conditioned pain modulation was assessed by pain ratings to pressure stimuli before and after a noxious conditioning stimulus (CS) conducted with one arm submerged in cold water (4°C) for 1 minute. Time of recovery (Time off) of pain intensity from peak VASmaxc after CS was recorded and compared between male and female patients. Results: Greater ongoing pain intensity was found among female patients compared with male patients and more experimental pain after pressure and cold induced pain. Summing all groups together, women had 0.8 times higher odds (20%) of recovering sooner than men after CS (95% CI = 0.65–2.9). No differences in CPM, time off, and psychosocial variables were seen between female and male patients (P < 0.05). Conclusion: Our hypothesis for sex differences in endogenous pain modulation was only supported by a shorter after-sensation time after cold CS in female patients. No sex differences in the magnitude of CPM effect were identified. Increased pain intensity for experimental pain, in both neuropathic pain and neuropathy without pain, was found in female patients.
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12
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Bruneau A, Carrié S, Moscaritolo L, Ingelmo P. Mechanism-Based Pharmacological Treatment for Chronic Non-cancer Pain in Adolescents: Current Approaches and Future Directions. Paediatr Drugs 2022; 24:573-583. [PMID: 36053398 DOI: 10.1007/s40272-022-00534-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 08/22/2022] [Indexed: 11/26/2022]
Abstract
Chronic non-cancer pain in pediatrics is a widespread phenomenon that affects about 20% of adolescents (10-19 years old). Although interdisciplinary pain treatment programs, which often include pharmacological treatment, have emerged as the standard of care in management of this patient population, evidence regarding an optimal treatment is lacking. The efficacy and safety profiles of pharmacological treatments used to help adolescents suffering from chronic non-cancer pain remain understudied. This lack of evidence may increase polypharmacy and the risk of drug interactions and adverse events. This review examines evidence for the use of pharmacological treatments prescribed to treat chronic pain in adolescents (10-19 years old), with a focus on mechanism-based pharmacology. The objectives of this review are to: (a) review the evidence for mechanism-based pharmacological treatments for chronic non-cancer pain in adolescents and (b) describe the pharmacological agents that are commonly prescribed to manage chronic pain in adolescents, including dosage information, mechanism, and potential adverse effects. Pharmacological treatments should be used carefully with adolescents, ideally within an interdisciplinary treatment program that will incorporate physical rehabilitation, integrative medicine/active mind-body techniques, psychology, and global efforts to normalize daily activities.
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Affiliation(s)
- Alice Bruneau
- Faculty of Medicine, McGill University, Montreal, QC, H3A 0C7, Canada.
| | - Sabrina Carrié
- Edwards Family Interdisciplinary Center for Complex Pain, Montreal Children's Hospital, Montreal, QC, Canada
- Department of Anaesthesia, McGill University, Montreal, QC, Canada
| | - Lorenzo Moscaritolo
- Edwards Family Interdisciplinary Center for Complex Pain, Montreal Children's Hospital, Montreal, QC, Canada
- Department of Anaesthesia, McGill University, Montreal, QC, Canada
| | - Pablo Ingelmo
- Edwards Family Interdisciplinary Center for Complex Pain, Montreal Children's Hospital, Montreal, QC, Canada
- Department of Anaesthesia, McGill University, Montreal, QC, Canada
- Alan Edward Centre for Research on Pain, Montreal, QC, Canada
- Research Institute, McGill University Health Center, Montreal, QC, Canada
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13
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Association between the Use of Quantitative Sensory Testing and Conditioned Pain Modulation and the Prescription of Medication and Interventional Procedures in Children with Chronic Pain Conditions. CHILDREN (BASEL, SWITZERLAND) 2022; 9:children9081157. [PMID: 36010048 PMCID: PMC9406785 DOI: 10.3390/children9081157] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/20/2022] [Revised: 07/15/2022] [Accepted: 07/28/2022] [Indexed: 11/17/2022]
Abstract
The evidence supporting the use of pharmacological treatments in pediatric chronic pain is limited. Quantitative sensory testing (QST) and conditioned pain modulation evaluation (CPM) provide information on pain phenotype, which may help clinicians to tailor the treatment. This retrospective study aimed to evaluate the association between the use of QST/CPM phenotyping on the selection of the treatment for children with chronic pain conditions. We retrospectively analyzed the medical records of 208 female patients (mean age 15 ± 2 years) enrolled in an outpatient interdisciplinary pediatric complex pain center. Pain phenotype information (QST/CPM) of 106 patients was available to the prescribing physician. The records of 102 age- and sex-matched patients without QST/CPM were used as controls. The primary endpoint was the proportion of medications and interventions prescribed. The secondary endpoint was the duration of treatment. The QST/CPM group received less opioids (7% vs. 28%, respectively, p < 0.001), less anticonvulsants (6% vs. 25%, p < 0.001), and less interventional treatments (29% vs. 44%, p = 0.03) than controls. Patients with an optimal CPM result tended to be prescribed fewer antidepressants (2% vs. 18%, p = 0.01), and patients with signs of allodynia and/or temporal summation tended to be prescribed fewer NSAIDs (57% vs. 78%, p = 0.04). There was no difference in the duration of the treatments between the groups. QST/CPM testing appears to provide more targeted therapeutic options resulting in the overall drop in polypharmacy and reduced use of interventional treatments while remaining at least as effective as the standard of care.
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14
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Scaini S, Michelini G, De Francesco S, Fagnani C, Medda E, Stazi MA, Battaglia M. Adolescent pain, anxiety, and depressive problems: a twin study of their co-occurrence and the relationship to substance use. Pain 2022; 163:e488-e494. [PMID: 34294665 DOI: 10.1097/j.pain.0000000000002400] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2021] [Accepted: 06/30/2021] [Indexed: 11/25/2022]
Abstract
ABSTRACT Data on the etiological factors underlying the co-occurrence of common adolescent pain with anxiety and depression symptoms are very limited. Opioid prescriptions for adolescent pain problems are on the rise in North America and constitute a risk factor for diversion, misuse, and substance use. In this study, we aimed to investigate the phenotypic and etiological association among pain, depression, and anxiety and to test their link to substance use in adolescents. By taking advantage of the Italian National Twin Registry and of the relatively low incidence of opioid prescriptions in Italy, we applied multivariate modelling analyses to 748 Italian adolescent twins (374 pairs, mean age 16 ± 1.24 years). Twins' responses to the Achenbach Youth Self-Report questionnaire were used to build a composite adolescent pain index and to measure anxiety, depression, and substance use. All monozygotic within-pair correlations were higher than the dizygotic correlations, indicating genetic influences for adolescent pain, anxiety, and depressive problems. A common latent liability factor influenced by genetic and environmental elements shared among pain, depression, and anxiety provided the best fit to explain the co-occurrence of adolescent pain, anxiety, and depression problems. A common phenotypic factor capturing all 3 phenotypes was positively associated (β = 0.19, P < 0.001, confidence interval: 0.10-0.27) with substance use. These findings indicate that several intertwined mechanisms, including genetic factors, can explain a shared liability to common adolescent pain, anxiety, and depression problems. Their association with substance use remains traceable even in societies with relatively low prevalence of opioid prescriptions.
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Affiliation(s)
- Simona Scaini
- Child and Youth Lab, Sigmund Freud University, Milan, Italy
| | - Giorgia Michelini
- Semel Institute for Neuroscience and Human Behavior, University of California Los Angeles, Los Angeles, CA, United States
| | | | - Corrado Fagnani
- Centre for Behavioural Sciences and Mental Health, Istituto Superiore di Sanità, Rome, Italy
| | - Emanuela Medda
- Centre for Behavioural Sciences and Mental Health, Istituto Superiore di Sanità, Rome, Italy
| | - Maria Antonietta Stazi
- Centre for Behavioural Sciences and Mental Health, Istituto Superiore di Sanità, Rome, Italy
| | - Marco Battaglia
- Centre for Addiction and Mental Health, Toronto, ON, Canada
- Department of Psychiatry, University of Toronto, ON, Canada
- Cundill Centre for Child and Youth Depression, Toronto, ON, Canada
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15
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Savignac C, Ocay DD, Mahdid Y, Blain-Moraes S, Ferland CE. Clinical use of Electroencephalography in the Assessment of Acute Thermal Pain: A Narrative Review Based on Articles From 2009 to 2019. Clin EEG Neurosci 2022; 53:124-132. [PMID: 34133245 DOI: 10.1177/15500594211026280] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Nowadays, no practical system has successfully been able to decode and predict pain in clinical settings. The inability of some patients to verbally express their pain creates the need for a tool that could objectively assess pain in these individuals. Neuroimaging techniques combined with machine learning are seen as possible candidates for the identification of pain biomarkers. This review aimed to address the potential use of electroencephalographic features as predictors of acute experimental pain. Twenty-six studies using only thermal stimulations were identified using a PubMed and Scopus search. Combinations of the following terms were used: "EEG," "Electroencephalography," "Acute," "Pain," "Tonic," "Noxious," "Thermal," "Stimulation," "Brain," "Activity," "Cold," "Subjective," and "Perception." Results revealed that contact-heat-evoked potentials have been widely recorded over central areas during noxious heat stimulations. Furthermore, a decrease in alpha power over central regions was revealed, as well as increased theta and gamma powers over frontal areas. Gamma and theta rhythms were associated with connectivity between sensory and affective regions involved in pain processing. A machine learning analysis revealed that the gamma band is a predominant predictor of acute thermal pain. This review also addressed the need of supplementing current spectral features with techniques that allow the investigation of network dynamics.
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Affiliation(s)
- Chloé Savignac
- 5620McGill University, Montreal, Quebec, Canada.,70357Shriners Hospitals for Children-Canada, Montreal, Quebec, Canada
| | - Don Daniel Ocay
- 5620McGill University, Montreal, Quebec, Canada.,70357Shriners Hospitals for Children-Canada, Montreal, Quebec, Canada
| | | | | | - Catherine E Ferland
- 5620McGill University, Montreal, Quebec, Canada.,70357Shriners Hospitals for Children-Canada, Montreal, Quebec, Canada.,Research Institute-McGill University Health Centre, Montreal, Quebec, Canada
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16
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Ocay DD, Larche CL, Betinjane N, Jolicoeur A, Beaulieu MJ, Saran N, Ouellet JA, Ingelmo PM, Ferland CE. Phenotyping Chronic Musculoskeletal Pain in Male and Female Adolescents: Psychosocial Profiles, Somatosensory Profiles and Pain Modulatory Profiles. J Pain Res 2022; 15:591-612. [PMID: 35250304 PMCID: PMC8892739 DOI: 10.2147/jpr.s352607] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2021] [Accepted: 01/26/2022] [Indexed: 12/17/2022] Open
Abstract
Purpose A major limitation in treatment outcomes for chronic pain is the heterogeneity of the population. Therefore, a personalized approach to the assessment and treatment of children and adolescents with chronic pain conditions is needed. The objective of the study was to subgroup pediatric patients with chronic MSK pain that will be phenotypically different from each other based on their psychosocial profile, somatosensory function, and pain modulation. Patients and Methods This observational cohort study recruited 302 adolescents (10–18 years) with chronic musculoskeletal pain and 80 age-matched controls. After validated self-report questionnaires on psychosocial factors were completed, quantitative sensory tests (QST) and conditioned pain modulation (CPM) were performed. Results Three psychosocial subgroups were identified: adaptive pain (n=125), high pain dysfunctional (n=115), high somatic symptoms (n=62). Based on QST, four somatosensory profiles were observed: normal QST (n=155), thermal hyperalgesia (n=98), mechanical hyperalgesia (n=34) and sensory loss (n=15). Based on CPM and temporal summation of pain (TSP), four distinct groups were formed, dysfunctional central processing group (n=27) had suboptimal CPM and present TSP, dysfunctional inhibition group (n=136) had suboptimal CPM and absent TSP, facilitation group (n=18) had optimal CPM and present TSP, and functional central processing (n=112) had optimal CPM and absent TSP. A significant association between the psychosocial and somatosensory profiles. However, no association was observed between the psychosocial or somatosensory profiles and pain modulatory profiles. Conclusion Our results provide evidence that adolescents with chronic musculoskeletal pain are a heterogenous population comprising subgroups that may reflect distinct mechanisms and may benefit from different treatment approaches. The combination of screening self-reported questionnaires, QST, and CPM facilitate subgrouping of adolescents with chronic MSK pain in the clinical context and may ultimately contribute to personalized therapy.
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Affiliation(s)
- Don Daniel Ocay
- Department of Experimental Surgery, McGill University, Montreal, QC, Canada
- Department of Clinical Research, Shriners Hospitals for Children Canada, Montreal, QC, Canada
| | - Cynthia L Larche
- Department of Clinical Research, Shriners Hospitals for Children Canada, Montreal, QC, Canada
| | - Natalie Betinjane
- Department of Clinical Research, Shriners Hospitals for Children Canada, Montreal, QC, Canada
| | - Alexandre Jolicoeur
- Department of Clinical Research, Shriners Hospitals for Children Canada, Montreal, QC, Canada
| | - Marie Josee Beaulieu
- Department of Clinical Research, Shriners Hospitals for Children Canada, Montreal, QC, Canada
| | - Neil Saran
- Department of Pediatric Orthopedics, McGill University, Montreal, QC, Canada
| | - Jean A Ouellet
- Department of Pediatric Orthopedics, McGill University, Montreal, QC, Canada
| | - Pablo M Ingelmo
- Edwards Family Interdisciplinary Center for Complex Pain, Montreal Children’s Hospital, Montreal, QC, Canada
- Department of Anesthesia, McGill University, Montreal, QC, Canada
- Research Institute-McGill University Health Centre, Montreal, QC, Canada
- Alan Edwards Research Center for Pain, McGill University, Montreal, QC, Canada
| | - Catherine E Ferland
- Department of Experimental Surgery, McGill University, Montreal, QC, Canada
- Department of Clinical Research, Shriners Hospitals for Children Canada, Montreal, QC, Canada
- Department of Anesthesia, McGill University, Montreal, QC, Canada
- Research Institute-McGill University Health Centre, Montreal, QC, Canada
- Alan Edwards Research Center for Pain, McGill University, Montreal, QC, Canada
- Correspondence: Catherine E Ferland, Shriners Hospitals for Children-Canada, 1003, Decarie Blvd, Montreal, H4A 0A9, Canada, Tel +1 514 842-4464, extension 7177,Fax +1 514 842-8664, Email
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17
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Ocay DD, Loewen A, Premachandran S, Ingelmo PM, Saran N, Ouellet JA, Ferland CE. Psychosocial and psychophysical assessment in pediatric patients and young adults with chronic back pain: a cluster analysis. Eur J Pain 2022; 26:855-872. [PMID: 35090183 PMCID: PMC9304192 DOI: 10.1002/ejp.1912] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Background Identifying subgroups with different clinical profiles may inform tailored management and improve outcomes. The objective of this study was to identify psychosocial and psychophysical profiles of children and adolescents with chronic back pain. Methods One hundred and ninety‐eight patients with chronic back pain were recruited for the study. Pain assessment was mainly conducted in the form of an interview and with the use of validated pain‐related questionnaires assessing their psychosocial factors and disability. All patients underwent mechanical and thermal quantitative sensory tests assessing detection and pain thresholds, and conditioned pain modulation efficacy. Results Hierarchal clustering partitioned our patients into three clusters accounting for 34.73% of the total variation of the data. The adaptive cluster represented 45.5% of the patients and was characterized to display high thermal and pressure pain thresholds. The high somatic symptoms cluster, representing 19.2% of patients, was characterized to use more sensory, affective, evaluative and temporal descriptors of pain, more likely to report their pain as neuropathic of nature, report a more functional disability, report symptoms of anxiety and depression and report poor sleep quality. The pain‐sensitive cluster, representing 35.4% of the cohort, displayed deep tissue sensitivity and thermal hyperalgesia. Conclusions This study identified clinical profiles of children and adolescents experiencing chronic back pain based on specific psychophysical and psychosocial characteristics highlighting that chronic pain treatment should address underlying nociceptive and non‐nociceptive mechanisms. Significance To our current knowledge, this study is the first to conduct cluster analysis with youth experiencing chronic back pain and displays clinical profiles based on specific physical and psychosocial characteristics. This study highlights that in a clinical context, chronic pain assessment should include multiple elements contributing to pain which can be assessed in a clinical context and addressed when pathoanatomical symptoms are unidentifiable.
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Affiliation(s)
- D D Ocay
- Department of Experimental Surgery, McGill University, Montreal, Quebec, Canada.,Department of Clinical Research, Shriners Hospitals for Children Canada, Montreal, Quebec, Canada
| | - A Loewen
- Faculty of Medicine, McGill University, Montreal, Quebec, Canada
| | - S Premachandran
- Department of Experimental Surgery, McGill University, Montreal, Quebec, Canada.,Department of Clinical Research, Shriners Hospitals for Children Canada, Montreal, Quebec, Canada
| | - P M Ingelmo
- Chronic Pain Services, Montreal Children's Hospital, Montreal, Quebec, Canada.,Department of Anesthesia, McGill University, Montreal, Quebec, Canada
| | - N Saran
- Department of Pediatric Orthopedics, McGill University, Montreal, Quebec, Canada
| | - J A Ouellet
- Department of Pediatric Orthopedics, McGill University, Montreal, Quebec, Canada
| | - C E Ferland
- Department of Experimental Surgery, McGill University, Montreal, Quebec, Canada.,Department of Clinical Research, Shriners Hospitals for Children Canada, Montreal, Quebec, Canada.,Department of Anesthesia, McGill University, Montreal, Quebec, Canada.,Research Institute, McGill University Health Centre, Montreal, Quebec, Canada
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18
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Waller R, Smith AJ, Graven-Nielsen T, Arendt-Nielsen L, Sterling M, Karppinen JI, O'Sullivan PB, Straker LM, Slater H. Role of population-based cohorts in understanding the emergence and progression of musculoskeletal pain. Pain 2022; 163:58-63. [PMID: 33883537 DOI: 10.1097/j.pain.0000000000002316] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2020] [Accepted: 04/13/2021] [Indexed: 11/25/2022]
Affiliation(s)
- Robert Waller
- Curtin School of Allied Health, Curtin University, Perth, Western Australia, Australia
| | - Anne Julia Smith
- Curtin School of Allied Health, Curtin University, Perth, Western Australia, Australia
| | - Thomas Graven-Nielsen
- Department of Health Science and Technology, Faculty of Medicine, Center for Neuroplasticity and Pain (CNAP), SMI, Aalborg University, Aalborg DK, Denmark
| | - Lars Arendt-Nielsen
- Department of Health Science and Technology, Faculty of Medicine, Center for Neuroplasticity and Pain (CNAP), SMI, Aalborg University, Aalborg DK, Denmark
| | - Michele Sterling
- RECOVER Injury Research Centre, NHMRC Centre of Research Excellence in Road Traffic Injury, The University of Queensland, Herston, Australia
| | - Jaro Ilari Karppinen
- Medical Research Center Oulu, University of Oulu and Oulu University Hospital, Oulu, Finland
- Finnish Institute of Occupational Health, Oulu, Finland
| | | | - Leon Melville Straker
- Curtin School of Allied Health, Curtin University, Perth, Western Australia, Australia
| | - Helen Slater
- Curtin School of Allied Health, Curtin University, Perth, Western Australia, Australia
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19
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Tu FF, Hellman KM, Roth GE, Dillane KE, Walker LS. Noninvasive bladder testing of adolescent females to assess visceral hypersensitivity. Pain 2022; 163:100-109. [PMID: 34086630 PMCID: PMC8505577 DOI: 10.1097/j.pain.0000000000002311] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2021] [Accepted: 04/08/2021] [Indexed: 01/03/2023]
Abstract
ABSTRACT Excess pain after visceral provocation has been suggested as a marker for chronic pelvic pain risk in women. However, few noninvasive tests have been validated that could be performed readily on youth in early risk windows. Therefore, we evaluated the validity and reliability of a noninvasive bladder pain test in 124 healthy premenarchal females (median age 11, [interquartile range 11-12]), as previously studied in adult women. We explored whether psychosocial, sensory factors, and quantitative sensory test results were associated with provoked bladder pain and assessed the relation of bladder pain with abdominal pain history. Compared with findings in young adult females (age 21 [20-28]), results were similar except that adolescents had more pain at first sensation to void (P = 0.005) and lower maximum tolerance volume (P < 0.001). Anxiety, depression, somatic symptoms, and pain catastrophizing predicted provoked bladder pain (P's < 0.05). Bladder pain inversely correlated with pressure pain thresholds (r = -0.25, P < 0.05), but not with cold pressor pain or conditioned pain modulation effectiveness. Bladder pain was also associated with frequency of abdominal pain symptoms (r = 0.25, P = 0.039). We found strong retest reliability for bladder pain at standard levels of sensory urgency in 21 adolescents who attended repeat visits at 6 to 12 months (intraclass correlations = 0.88-0.90). Noninvasive bladder pain testing seems reproducible in adolescent females and may predict abdominal pain symptomatology. Confirmation of our findings and further investigation of the bladder test across menarche will help establish how visceral sensitivity contributes to the early trajectory of pelvic pain risk.
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Affiliation(s)
- Frank F Tu
- Department of Ob/Gyn, NorthShore University HealthSystem Evanston, IL, United States
- Department of Ob/Gyn, University of Chicago, Pritzker School of Medicine, Chicago, IL, United States
| | - Kevin M Hellman
- Department of Ob/Gyn, NorthShore University HealthSystem Evanston, IL, United States
- Department of Ob/Gyn, University of Chicago, Pritzker School of Medicine, Chicago, IL, United States
| | - Genevieve E Roth
- Department of Ob/Gyn, NorthShore University HealthSystem Evanston, IL, United States
- Department of Psychology, Loyola University of Chicago, Chicago, IL, United States
| | - Katlyn E Dillane
- Department of Ob/Gyn, NorthShore University HealthSystem Evanston, IL, United States
| | - Lynn S Walker
- Department of Pediatrics, Vanderbilt University Medical Center, Nashville, TN, United States
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20
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Adolescent pain: appraisal of the construct and trajectory prediction-by-symptom between age 12 and 17 years in a Canadian twin birth cohort. Pain 2021; 163:e1013-e1020. [PMID: 34966130 DOI: 10.1097/j.pain.0000000000002569] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2021] [Accepted: 12/13/2021] [Indexed: 11/25/2022]
Abstract
ABSTRACT Adolescent pain is common and continues into adulthood, leading to negative long-term outcomes including substance-related morbidity: an empirical definition of its construct may inform the early detection of persistent pain trajectories. These secondary analyses of a classical twin study assessed whether: headaches, back pains, abdominal pain, chest pains, stabbing/throbbing pain, gastric pain/nausea, measured in 501 pairs across 5 waves between age 12-17, fit a unitary construct, or constitute independent manifestations. We then assessed which symptoms were associated with a steady, 'frequent pain' trajectory that is associated with risk for early opioid prescriptions. Item Response Theory results indicated that all 6 pain symptoms index a unitary construct. Binary logistic regressions identified 'back pain' as the only symptom consistently associated with membership in the 'frequent adolescent pain' trajectory (OR:1.66-3.38) at all 5 measurement waves. Receiver Operating Characteristic analyses computed the discriminating power of symptoms to determine participants' membership into the 'frequent' trajectory: they yielded acceptable (.7-.8) to excellent (.8-.9) area under the curve (AUC) values for all 6 symptoms. The highest AUC was attained by 'back pain' at age 14 (.835); for multiple cut-off thresholds of symptom frequency, 'back pain' showed good sensitivity/false alarm probability trade-offs, predominantly in the 13-14-15 age range, to predict the 'frequent pain' trajectory. These data support a unitary conceptualization and assessment of adolescent pain, which is advantageous for epidemiological, clinical, and translational purposes. Persistent back pain constitutes a sensitive indicator of a steady trajectory of adolescent pain.
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21
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Lucas R, Brandão M, Gorito V, Talih M. Refining the prediction of multisite pain in 13-year-old boys and girls by using parent-reported pain experiences in the first decade of life. Eur J Pain 2021; 26:695-708. [PMID: 34904323 PMCID: PMC9305734 DOI: 10.1002/ejp.1898] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2021] [Accepted: 12/10/2021] [Indexed: 11/11/2022]
Abstract
Background We evaluated different pain profiles as prospective predictors of multisite pain in 13‐year‐old adolescents (1300 girls and 1457 boys) enrolled in Generation XXI, a birth cohort study in Portugal. Methods Pain history was queried using the Luebeck Pain Questionnaire through parent proxy‐ (ages 7 and 10) and adolescent (age 13) self‐reports. We estimated the risk of multisite pain (2 or more pain sites) at age 13, according to previous pain experiences, including accumulation and timing. We defined five profiles that combined adverse features at ages 7 and 10 (recurrence, multisite, frequency, duration, intensity, triggers, activity restrictions, passive coping, and family history) and estimated their relative risks (RR) and likelihood ratios (LR) for adolescent multisite pain. Results At age 13, 39.2% of girls and 27.2% of boys reported multisite pain in the previous three months. The risk was higher among girls with multisite and recurrent pain at ages 7 and 10 than in girls without those adverse features, especially if psychosocial triggers were also present (RR 1.87; 95% confidence interval 1.36, 2.36 and LR 3.49; 1.53, 7.96). Boys with recurrent pain of higher frequency and causing activity restrictions at ages 7 and 10 had a higher risk of multisite pain at 13 (RR 2.05; 1.03, 3.05 and LR 3.06; 1.12, 8.39). Earlier adverse experiences were more predictive of future pain in girls than in boys. Conclusions Different profiles were useful to rule in future multisite pain in boys and girls. This provides clues for early stratification of chronic pain risk. Significance We identified sex‐specific pain features that can be collected by practitioners in the first decade of life to improve the stratification of children in terms of their future risk of a maladaptive pain experience in adolescence. Using a prospective population‐based cohort design, we show that early multisite pain and psychosocial triggers are relevant predictors of future multisite pain in girls, whereas repeated reports of high‐frequency pain leading to activity restrictions are predictive of adolescent multisite pain in boys.
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Affiliation(s)
- Raquel Lucas
- EPIUnit (Epidemiology Research Unit), ITR (Laboratory for Integrative and Translational Research in Population Health), Instituto de Saúde Pública, Universidade do Porto, Porto, Portugal.,Departamento de Ciências da Saúde Pública e Forenses e Educação Médica, Faculdade de Medicina, Universidade do Porto, Porto, Portugal
| | - Maria Brandão
- EPIUnit (Epidemiology Research Unit), ITR (Laboratory for Integrative and Translational Research in Population Health), Instituto de Saúde Pública, Universidade do Porto, Porto, Portugal
| | - Vanessa Gorito
- EPIUnit (Epidemiology Research Unit), ITR (Laboratory for Integrative and Translational Research in Population Health), Instituto de Saúde Pública, Universidade do Porto, Porto, Portugal.,Department of Pediatrics, Centro Hospitalar Universitário São João, Porto, Portugal
| | - Makram Talih
- EPIUnit (Epidemiology Research Unit), ITR (Laboratory for Integrative and Translational Research in Population Health), Instituto de Saúde Pública, Universidade do Porto, Porto, Portugal
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22
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Heritability of musculoskeletal pain and pain sensitivity phenotypes: two generations of the Raine Study. Pain 2021; 163:e580-e587. [PMID: 34686644 DOI: 10.1097/j.pain.0000000000002411] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2020] [Accepted: 07/12/2021] [Indexed: 11/25/2022]
Abstract
ABSTRACT There is a need to better understand biological factors that increase the risk of persistent musculoskeletal pain and heightened pain sensitivity. Knowing the heritability (how genes account for differences in people's traits) can enhance the understanding of genetic versus environmental influences of pain and pain sensitivity. However, there are gaps in current knowledge, including the need for intergenerational studies to broaden our understanding of the genetic basis of pain. Data from Gen1 and Gen2 of the Raine Study were used to investigate the heritability of musculoskeletal pain, and pressure and cold pain sensitivity. Participants included parents (Gen 1, n=1092) and their offspring (Gen 2, n=688) who underwent a battery of testing and questionnaires including pressure and cold pain threshold testing and assessments of physical activity, sleep, musculoskeletal pain, mental health and adiposity. Heritability estimates were derived using the Sequential Oliogenic Linkage Analysis Routines (SOLAR) software. Heritability estimates for musculoskeletal pain and pressure pain sensitivity were significant, accounting for between 0.190 and 0.289 of the variation in the phenotype. In contrast, heritability of cold pain sensitivity was not significant. This is the largest intergenerational study to date to comprehensively investigate the heritability of both musculoskeletal pain and pain sensitivity, using robust statistical analysis. This study provides support for the heritability of musculoskeletal pain and pain sensitivity to pressure, suggesting the need for further convergence of genetic and environmental factors in models for the development and/or maintenance of these pain disorders.
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Nunes AMP, Moita JPAM, Espanha MMMR, Petersen KK, Arendt-Nielsen L. Pressure pain thresholds in office workers with chronic neck pain: A systematic review and meta-analysis. Pain Pract 2021; 21:799-814. [PMID: 33829681 DOI: 10.1111/papr.13014] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2020] [Revised: 02/01/2021] [Accepted: 03/25/2021] [Indexed: 12/21/2022]
Abstract
OBJECTIVES The purpose of this study was to (a) compare pressure pain threshold (PPT) values between office workers with chronic neck pain and asymptomatic controls; (b) establish reference PPT values in chronic neck pain; and (c) evaluate associations between PPTs and pain intensity, and disability. METHODS Seven English/Portuguese databases were searched for relevant literature. Studies investigating adult office workers (age >18 years) with chronic neck pain were included if PPTs were an outcome. The risk of bias was assessed using the Downs and Black checklist. Meta-analysis was conducted if a cluster contained at least two studies reporting the same PPTs. RESULTS Ten high quality, two low quality, and one poor quality studies were included. The meta-analysis revealed decreased PPT values in the upper trapezius, extensor carpi ulnaris, and tibialis anterior in office workers with chronic neck pain when compared with healthy workers, without a statistical difference (p > 0.05). The PPT reference value in the upper trapezius was 263 kPa (95% confidence interval [CI] = 236.35 to 289.70), and 365 kPa (95% CI = 316.66 to 415.12) for the tibialis anterior in office workers with chronic neck pain. No correlations were found between the upper trapezius PPT and pain intensity and disability. CONCLUSION This meta-analysis found that all the PPT measurements were not significantly reduced in office workers with chronic neck pain compared with healthy workers. These assumptions were based on a small sample of existing studies, and therefore further studies are necessary to quantify the differences in PPTs. Hypersensitivity PPT reference values are proposed for localized and extrasegmental sites in office workers with chronic neck pain.
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Affiliation(s)
- Alexandre Maurício Passos Nunes
- Biomechanics and Functional Morphology Laboratory, CIPER, Faculdade de Motricidade Humana da Universidade de Lisboa, Cruz-Quebrada, Portugal.,Escola Superior de Saúde Jean Piaget do Algarve, Silves, Portugal.,Escola Superior de Saúde Atlântica, Barcarena, Portugal
| | | | | | - Kristian Kjaer Petersen
- SMI, Department of Health Science and Technology, Faculty of Medicine, Aalborg University, Aalborg, Denmark.,Center for Neuroplasticity and Pain (CNAP), Department of Health Science and Technology, Aalborg University, Aalborg, Denmark
| | - Lars Arendt-Nielsen
- SMI, Department of Health Science and Technology, Faculty of Medicine, Aalborg University, Aalborg, Denmark.,Center for Neuroplasticity and Pain (CNAP), Department of Health Science and Technology, Aalborg University, Aalborg, Denmark
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Abstract
Two recent studies suggest that experimental pain sensitivity is associated with low-grade systemic inflammation. However, only 2 biomarkers have been identified, and the studies were conducted in adult individuals where confounding effects of comorbid diseases cannot be excluded. We therefore tested associations between pain sensitivity and 119 inflammation-related serum biomarkers in 827 healthy adolescents (15-19 years) in the population-based Tromsø Study: Fit Futures. The main outcome measure was cold-pressor pain tolerance (CPT), tested by placing the dominant hand in circulating cold (3°C) water for a maximum of 105 seconds. Secondary outcomes were heat and pressure pain threshold and tolerance. Twelve proteins and 6 fatty acids were significantly associated with CPT after adjustment for possible confounding factors and correction for multiple comparisons. Of these, all fatty acids and 10 proteins were protective, ie, higher biomarkers levels were associated with increased CPT, whereas 2 biomarkers were associated with lower tolerance. Taken together, these biomarkers predicted completion of the tolerance test with a C-statistic of 0.65. Results for heat and pressure pain tolerance were remarkably similar, strengthening the generalizability of our findings. In this cohort of young healthy individuals, we found a relationship between inflammation-related biomarkers and pain tolerance and thresholds. Biomarkers with anti-inflammatory and analgesic effects predominated, suggesting that the development of prophylactic dietary or pharmaceutical treatments may be possible.
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Kersch A, Perera P, Mercado M, Gorrie A, Sainsbury D, McGrath T, Aouad P, Sarraf S, Jaaniste T, Champion D. Somatosensory Testing in Pediatric Patients with Chronic Pain: An Exploration of Clinical Utility. CHILDREN-BASEL 2020; 7:children7120275. [PMID: 33291481 PMCID: PMC7762158 DOI: 10.3390/children7120275] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/08/2020] [Revised: 12/02/2020] [Accepted: 12/03/2020] [Indexed: 12/04/2022]
Abstract
We aimed to evaluate the utility of clinical somatosensory testing (SST), an office adaptation of laboratory quantitative sensory testing, in a biopsychosocial assessment of a pediatric chronic somatic pain sample (N = 98, 65 females, 7–18 years). Stimulus–response tests were applied at pain regions and intra-subject control sites to cutaneous stimuli (simple and dynamic touch, punctate pressure and cool) and deep pressure stimuli (using a handheld pressure algometer, and, in a subset, manually inflated cuff). Validated psychological, pain-related and functional measures were administered. Cutaneous allodynia, usually regional, was elicited by at least one stimulus in 81% of cases, most frequently by punctate pressure. Central sensitization, using a composite measure of deep pressure pain threshold and temporal summation of pain, was implied in the majority (59.2%) and associated with worse sleep impairment and psychological functioning. In regression analyses, depressive symptoms were the only significant predictor of pain intensity. Functional interference was statistically predicted by deep pressure pain threshold and depressive symptoms. Manually inflated cuff algometry had comparable sensitivity to handheld pressure algometry for deep pressure pain threshold but not temporal summation of pain. SST complemented standard biopsychosocial assessment of pediatric chronic pain; use of SST may facilitate the understanding of disordered neurobiology.
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Affiliation(s)
- Anna Kersch
- Department of Pain, Sydney Children’s Hospital, Randwick, NSW 2031, Australia; (A.K.); (P.P.); (M.M.); (A.G.); (D.S.); (P.A.); (S.S.); (T.J.)
- School of Medicine, University of New South Wales, Sydney, NSW 2052, Australia
| | - Panchalee Perera
- Department of Pain, Sydney Children’s Hospital, Randwick, NSW 2031, Australia; (A.K.); (P.P.); (M.M.); (A.G.); (D.S.); (P.A.); (S.S.); (T.J.)
- School of Medicine, University of New South Wales, Sydney, NSW 2052, Australia
| | - Melanie Mercado
- Department of Pain, Sydney Children’s Hospital, Randwick, NSW 2031, Australia; (A.K.); (P.P.); (M.M.); (A.G.); (D.S.); (P.A.); (S.S.); (T.J.)
- School of Medicine, University of New South Wales, Sydney, NSW 2052, Australia
| | - Andrew Gorrie
- Department of Pain, Sydney Children’s Hospital, Randwick, NSW 2031, Australia; (A.K.); (P.P.); (M.M.); (A.G.); (D.S.); (P.A.); (S.S.); (T.J.)
- School of Medicine, University of New South Wales, Sydney, NSW 2052, Australia
| | - David Sainsbury
- Department of Pain, Sydney Children’s Hospital, Randwick, NSW 2031, Australia; (A.K.); (P.P.); (M.M.); (A.G.); (D.S.); (P.A.); (S.S.); (T.J.)
| | - Tara McGrath
- Stollery Children’s Hospital, University of Alberta, Edmonton, AB T6G 2R3, Canada;
| | - Phillip Aouad
- Department of Pain, Sydney Children’s Hospital, Randwick, NSW 2031, Australia; (A.K.); (P.P.); (M.M.); (A.G.); (D.S.); (P.A.); (S.S.); (T.J.)
- School of Medicine, University of New South Wales, Sydney, NSW 2052, Australia
| | - Sara Sarraf
- Department of Pain, Sydney Children’s Hospital, Randwick, NSW 2031, Australia; (A.K.); (P.P.); (M.M.); (A.G.); (D.S.); (P.A.); (S.S.); (T.J.)
| | - Tiina Jaaniste
- Department of Pain, Sydney Children’s Hospital, Randwick, NSW 2031, Australia; (A.K.); (P.P.); (M.M.); (A.G.); (D.S.); (P.A.); (S.S.); (T.J.)
- School of Medicine, University of New South Wales, Sydney, NSW 2052, Australia
| | - David Champion
- Department of Pain, Sydney Children’s Hospital, Randwick, NSW 2031, Australia; (A.K.); (P.P.); (M.M.); (A.G.); (D.S.); (P.A.); (S.S.); (T.J.)
- School of Medicine, University of New South Wales, Sydney, NSW 2052, Australia
- Correspondence:
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Lunde CE, Szabo E, Holmes SA, Borsook D, Sieberg CB. Commentary: Novel Use of Offset Analgesia to Assess Adolescents and Adults with Treatment Resistant Endometriosis-Associated Pain. J Pain Res 2020; 13:2775-2782. [PMID: 33204144 PMCID: PMC7660453 DOI: 10.2147/jpr.s276135] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2020] [Accepted: 10/10/2020] [Indexed: 12/18/2022] Open
Abstract
Background and Objective Endometriosis, affecting approximately 176 million adults and adolescents worldwide, is a debilitating condition in which uterine tissue grows outside the uterus. The condition costs the US economy approximately $78 billion annually in pain-related disability. By understanding the neural underpinnings of endometriosis-associated pain (EAP) and risk factors for chronification, translational research methods could lessen diagnostic delays and maximize successful pain remediation. This can be accomplished by the novel use of a known method, offset analgesia (OA), to better elucidate the neural mechanisms that may contribute to and maintain EAP. This commentary will provide justification and rationale for the use of OA in the study of EAP. Conclusion Utilizing an OA paradigm in patients with endometriosis, especially adolescents, may (1) provide insight into neural mechanisms contributing to pain maintenance, which could capture those at-risk for the transition to chronic pelvic pain, (2) provide a metric for the development of future centrally mediated treatment options for this population, and (3) elucidate the brain changes that result in resistance to treatment and pain chronification.
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Affiliation(s)
- Claire E Lunde
- Center for Pain and the Brain (P.A.I.N. Group), Department of Anesthesiology, Critical Care, and Pain Medicine, Boston Children's Hospital, Boston, MA, USA.,Biobehavioral Pediatric Pain Lab, Department of Psychiatry and Behavioral Sciences, Boston Children's Hospital, Boston, MA, USA.,Nuffield Department of Women's and Reproductive Health, Medical Sciences Division, University of Oxford, Oxford, Oxfordshire, UK
| | - Edina Szabo
- Center for Pain and the Brain (P.A.I.N. Group), Department of Anesthesiology, Critical Care, and Pain Medicine, Boston Children's Hospital, Boston, MA, USA.,Department of Anesthesiology, Harvard Medical School, Boston, MA, USA
| | - Scott A Holmes
- Center for Pain and the Brain (P.A.I.N. Group), Department of Anesthesiology, Critical Care, and Pain Medicine, Boston Children's Hospital, Boston, MA, USA.,Department of Anesthesiology, Harvard Medical School, Boston, MA, USA
| | - David Borsook
- Center for Pain and the Brain (P.A.I.N. Group), Department of Anesthesiology, Critical Care, and Pain Medicine, Boston Children's Hospital, Boston, MA, USA.,Department of Anesthesiology, Harvard Medical School, Boston, MA, USA
| | - Christine B Sieberg
- Center for Pain and the Brain (P.A.I.N. Group), Department of Anesthesiology, Critical Care, and Pain Medicine, Boston Children's Hospital, Boston, MA, USA.,Biobehavioral Pediatric Pain Lab, Department of Psychiatry and Behavioral Sciences, Boston Children's Hospital, Boston, MA, USA.,Department of Psychiatry, Harvard Medical School, Boston, MA, USA
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Zibura AE, Salmon JH, Belda Lopez B, X Lascelles BD, Westermeyer HD. Glaucoma-associated pain results in mechanical sensitivity changes in dogs: A pilot study. Vet Ophthalmol 2020; 24 Suppl 1:116-124. [PMID: 32608141 DOI: 10.1111/vop.12800] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2020] [Revised: 06/04/2020] [Accepted: 06/05/2020] [Indexed: 11/30/2022]
Abstract
PURPOSE To explore the effects of chronic, uncontrolled glaucoma on pressure sensitivity in dogs before and after enucleation of the painful globe. METHODS Client-owned dogs undergoing enucleation for chronic glaucoma with no other sources of pain were enrolled. Normal dogs of similar breeds and skull morphology were enrolled as controls. Craniofacial ratio (CFR) and relative palpebral fissure width (RPFW) were assessed in all patients. Serial mechanical quantitative sensory testing (QST) was performed the day before surgery, and 14, 30, 60, and 120 days after surgery. QST consisted of electronic Von Frey (eVF), and blunt algometry (BA) performed above and below the nonglaucomatous eye, the metacarpus, and metatarsus. Cochet-Bonnet esthesiometry (CB) was also performed on the remaining eye. RESULTS Twelve dogs (6 per group) were included. Compared to baseline values, sensitivity tended to decrease over time (increased thresholds) in treatment dogs while it stayed constant or increased slightly in control dogs. The difference in change from baseline sensitivity between control and treatment groups was significant at day 120 using BA at supraorbital (P = .0153), infraorbital (P = .0209), and metacarpal sites (P = .007) and overall (P = .0470). This divergence was also significant using CB (P = .0470) on the opposite cornea. As patient CFR and RPFWV increased, both eVF (P = .005-.023) and BA (P = .004-.041) increased. CONCLUSIONS Sensitivity to mechanical stimuli decreased both locally and at remote sites in dogs following enucleation for painful chronic glaucoma. Cranial conformation is associated with differences in sensitivity.
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Affiliation(s)
- Ashley E Zibura
- Comparative Ophthalmology, Department of Clinical Sciences, College of Veterinary Medicine, North Carolina State University, Raleigh, NC, USA
| | - Jacklyn H Salmon
- Comparative Ophthalmology, Department of Clinical Sciences, College of Veterinary Medicine, North Carolina State University, Raleigh, NC, USA
| | - Beatriz Belda Lopez
- Small Animal Surgery, Department of Clinical Sciences, College of Veterinary Medicine, North Carolina State University, Raleigh, NC, USA.,Translational Research in Pain Program, Department of Clinical Sciences, College of Veterinary Medicine, North Carolina State University, Raleigh, NC, USA
| | - B Duncan X Lascelles
- Small Animal Surgery, Department of Clinical Sciences, College of Veterinary Medicine, North Carolina State University, Raleigh, NC, USA.,Translational Research in Pain Program, Department of Clinical Sciences, College of Veterinary Medicine, North Carolina State University, Raleigh, NC, USA.,Comparative Pain Research and Education Center, North Carolina State University, Raleigh, NC, USA
| | - Hans D Westermeyer
- Comparative Ophthalmology, Department of Clinical Sciences, College of Veterinary Medicine, North Carolina State University, Raleigh, NC, USA
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Quantitative Sensory Testing in Adolescents with Co-occurring Chronic Pain and Obesity: A Pilot Study. CHILDREN-BASEL 2020; 7:children7060055. [PMID: 32498300 PMCID: PMC7346135 DOI: 10.3390/children7060055] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/27/2020] [Revised: 04/28/2020] [Accepted: 05/29/2020] [Indexed: 11/25/2022]
Abstract
Factors such as gender, ethnicity, and age affect pain processing in children and adolescents with chronic pain. Although obesity has been shown to affect pain processing in adults, almost nothing is known about pediatric populations. The aim of this pilot study was to explore whether obesity alters sensory processing in adolescents with chronic pain. Participants were recruited from a chronic pain clinic (Chronic Pain (CP), n = 12 normal weight; Chronic Pain + Obesity (CPO), n = 19 overweight/obesity) and from an obesity clinic (Obesity alone (O), n = 14). The quantitative sensory testing protocol included assessments of thermal and mechanical pain thresholds and perceptual sensitization at two sites with little adiposity. The heat pain threshold at the hand was significantly higher in the CPO group than in either the CP or O groups. Mechanical pain threshold (foot) was significantly higher in the CPO group than the CP group. No differences were found on tests of perceptual sensitization. Correlations between experimental pain and clinical pain parameters were found for the CPO group, but not for the CP group. This preliminary study provides important lessons learned for subsequent, larger-scale studies of sensory processing for youth with co-occurring chronic pain and obesity.
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Khan WU, Michelini G, Battaglia M. Twin studies of the covariation of pain with depression and anxiety: A systematic review and re-evaluation of critical needs. Neurosci Biobehav Rev 2020; 111:135-148. [DOI: 10.1016/j.neubiorev.2020.01.015] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2019] [Revised: 12/13/2019] [Accepted: 01/15/2020] [Indexed: 01/21/2023]
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Prottengeier J, Elsner S, Wehrfritz A, Moritz A, Schmidt J, Meyer M. Nociception testing during fixed-wing ambulance flights. An interventional pilot study on the effects of flight-related environmental changes on the nociception of healthy volunteers. PLoS One 2020; 15:e0217530. [PMID: 32092064 PMCID: PMC7039504 DOI: 10.1371/journal.pone.0217530] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2019] [Accepted: 02/05/2020] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND The effects of environmental changes on the somato-sensory system during long-distance air ambulance flights need to be further investigated. Changes in nociceptive capacity are conceivable in light of previous studies performed under related environmental settings. We used standardized somato-sensory testing to investigate nociception in healthy volunteers during air-ambulance flights. METHODS Twenty-five healthy individuals were submitted to a test compilation analogous to the quantitative sensory testing battery-performed during actual air-ambulance flights. Measurements were paired around the major changes of external factors during take-off/climb and descent/landing. Bland-Altman-Plots were calculated to identify possible systemic effects. RESULTS Bland-Altman-analyses suggest that the thresholds of stimulus detection and pain as well as above-threshold pain along critical waypoints of travel are not subject to systemic effects but instead demonstrate random variations. CONCLUSIONS We provide a novel description of a real-life experimental setup and demonstrate the general feasibility of performing somato-sensory testing during ambulance flights. No systematic effects on the nociception of healthy individuals were apparent from our data. Our findings open up the possibility of future investigations into potential effects of ambulance flights on patients suffering acute or chronic pain.
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Affiliation(s)
- Johannes Prottengeier
- Department of Anesthesiology, University Hospital Erlangen, Erlangen, Germany
- Faculty of Medicine, Friedrich-Alexander University Erlangen-Nuremberg, Erlangen, Germany
- * E-mail:
| | - Stefan Elsner
- Faculty of Medicine, Friedrich-Alexander University Erlangen-Nuremberg, Erlangen, Germany
| | - Andreas Wehrfritz
- Department of Anesthesiology, University Hospital Erlangen, Erlangen, Germany
- Faculty of Medicine, Friedrich-Alexander University Erlangen-Nuremberg, Erlangen, Germany
| | - Andreas Moritz
- Department of Anesthesiology, University Hospital Erlangen, Erlangen, Germany
- Faculty of Medicine, Friedrich-Alexander University Erlangen-Nuremberg, Erlangen, Germany
| | - Joachim Schmidt
- Department of Anesthesiology, University Hospital Erlangen, Erlangen, Germany
- Faculty of Medicine, Friedrich-Alexander University Erlangen-Nuremberg, Erlangen, Germany
| | - Michael Meyer
- Department of Anesthesiology, University Hospital Erlangen, Erlangen, Germany
- Faculty of Medicine, Friedrich-Alexander University Erlangen-Nuremberg, Erlangen, Germany
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Transient receptor potential ankyrin 1 promoter methylation and peripheral pain sensitivity in Crohn's disease. Clin Epigenetics 2019; 12:1. [PMID: 31892361 PMCID: PMC6938615 DOI: 10.1186/s13148-019-0796-9] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2019] [Accepted: 12/16/2019] [Indexed: 12/11/2022] Open
Abstract
Background Crohn’s disease is a chronic inflammatory disorder of the gastrointestinal tract associated with abdominal pain and diarrhea. Pain caused by Crohn’s disease likely involves neurogenic inflammation which seems to involve the ion channel transient receptor potential ankyrin 1 (TRPA1). Since the promoter methylation of TRPA1 was shown to influence pain sensitivity, we asked if the expression of TRPA1 is dysregulated in patients suffering from Crohn’s disease. The methylation rates of CpG dinucleotides in the TRPA1 promoter region were determined from DNA derived from whole blood samples of Crohn patients and healthy participants. Quantitative sensory testing was used to examine pain sensitivities. Results Pressure pain thresholds were lower in Crohn patients as compared to healthy participants, and they were also lower in females than in males. They correlated inversely with the methylation rate at the CpG − 628 site of the TRPA1 promoter. This effect was more pronounced in female compared to male Crohn patients. Similar results were found for mechanical pain thresholds. Furthermore, age-dependent effects were detected. Whereas the CpG − 628 methylation rate declined with age in healthy participants, the methylation rate in Crohn patients increased. Pressure pain thresholds increased with age in both cohorts. Conclusions The TRPA1 promoter methylation appears to be dysregulated in patients suffering from Crohn’s disease, and this effect is most obvious when taking gender and age into account. As TRPA1 is regarded to be involved in pain caused by neurogenic inflammation, its aberrant expression may contribute to typical symptoms of Crohn’s disease.
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Schoth DE, Blankenburg M, Wager J, Broadbent P, Zhang J, Zernikow B, Liossi C. Association between quantitative sensory testing and pain or disability in paediatric chronic pain: protocol for a systematic review and meta-analysis. BMJ Open 2019; 9:e031861. [PMID: 31594898 PMCID: PMC6797335 DOI: 10.1136/bmjopen-2019-031861] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
Abstract
INTRODUCTION This protocol describes the objective and methods of a systematic review of the association between quantitative sensory testing (QST) measures and pain intensity or disability in paediatric chronic pain (PCP). The review will also assess whether the relationship strength is moderated by variables related to the QST method and pain condition; the use of QST in PCP (modalities, outcome measures and anatomical test sites as well as differentiating between pain mechanisms (eg, neuropathic vs nociceptive) and in selecting analgesics); the reliability of QST across the paediatric age range; the ability of QST to differentiate patients with chronic pain from healthy controls; and differences between anatomical test sites. METHODS AND ANALYSIS Medline, PsycINFO, CINHAL, Web of Science, Scopus, Cochrane Library and OpenGrey will be searched. English language studies will be eligible if they recruit a sample aged 6-24 (inclusive) with chronic pain, including primary and secondary pain; apply at least one of the following QST modalities: chemical, electrical, mechanical (subgroups include pressure, punctate/brush and vibratory) or thermal stimulus to measure perception of noxious or innocuous stimuli applied to skin, muscle or joint; use a testing protocol to control for stimulus properties: modality, anatomical site, intensity, duration and sequence. Following title and abstract screening, the full texts of relevant records will be independently assessed by two reviewers. For eligible studies, one reviewer will extract study characteristics and data, and another will check for accuracy. Both will undertake independent quality assessments using the Appraisal Tool for Cross-Sectional Studies. A qualitative synthesis will be presented with discussion centred around different QST modalities. Where eligible data permit, meta-analyses will be performed separately for different QST modalities using comprehensive meta-analysis. ETHICS AND DISSEMINATION Review findings will be reported in a peer-reviewed journal and presented at conferences. The study raises no ethical issues. PROSPERO REGISTRATION NUMBER CRD42019134069.
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Affiliation(s)
| | | | - Julia Wager
- Universitat Witten/Herdecke, Witten, Germany
| | | | - Jin Zhang
- School of Psychology, University of Southampton, Southampton, UK
| | | | - Christina Liossi
- School of Psychology, University of Southampton, Southampton, UK
- Paediatric Psychology, Great Ormond Street Hospital for Children NHS Foundation Trust, London, UK
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Dudeney J, Law EF, Meyyappan A, Palermo TM, Rabbitts JA. Evaluating the psychometric properties of the Widespread Pain Index and the Symptom Severity scale in youth with painful conditions. CANADIAN JOURNAL OF PAIN-REVUE CANADIENNE DE LA DOULEUR 2019; 3:137-147. [PMID: 32051925 PMCID: PMC7015535 DOI: 10.1080/24740527.2019.1620097] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Background Assessing features of centralized pain may prove to be clinically meaningful in pediatric populations. However, we are currently limited by the lack of validated pediatric measures. Aim We examined the psychometric properties of the Widespread Pain Index (WPI) and Symptom Severity (SS) scale, to assess features of centralized pain, in youth with painful conditions from three clinical samples: (1) musculoskeletal surgery, (2) headache, and (3) chronic pain. Methods Participants were 240 youth aged 10-18 years (Mage=14.8, SD=1.9) who completed the WPI and SS scale. Subsets of participants also completed additional measures of pain region, pain intensity, quality of life, pain interference and physical function. Results Increased features of centralized pain by age were seen for the WPI (r=0.27, p<0.01) and SS scale (r=0.29, p<0.01). Expected differences in sex were seen for the WPI (sex:t132=-3.62, p<0.01), but not the SS scale (sex:t223=-1.73, p=0.09). Reliability for the SS scale was adequate (α=.70). Construct validity was demonstrated through relationships between the WPI and pain regions (r=.57, p<0.01), and between the SS scale and quality of life (r=-.59, p<0.01) and pain interference (r=.56, p<0.01). Criterion validity was demonstrated by differences on the WPI between the surgery sample and the headache and chronic pain samples (F2,237=17.55, p<0.001). Comprehension of the SS scale items was problematic for some youth. Conclusions The WPI showed adequate psychometric properties in youth; however the SS scale may need to be modified. Our findings support the need to develop psychometrically sound instruments for comprehensive assessment of pain in pediatric samples.
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Affiliation(s)
- Joanne Dudeney
- Center for Child Health, Behavior and Development, Seattle Children's Research Institute, Seattle, WA, USA.,School of Women's and Children's Health, Faculty of Medicine, University of New South Wales, NSW, Australia
| | - Emily F Law
- Center for Child Health, Behavior and Development, Seattle Children's Research Institute, Seattle, WA, USA.,Department of Anesthesiology and Pain Medicine, University of Washington School of Medicine, Seattle, WA, USA
| | - Alagumeena Meyyappan
- Center for Child Health, Behavior and Development, Seattle Children's Research Institute, Seattle, WA, USA
| | - Tonya M Palermo
- Center for Child Health, Behavior and Development, Seattle Children's Research Institute, Seattle, WA, USA.,Department of Anesthesiology and Pain Medicine, University of Washington School of Medicine, Seattle, WA, USA
| | - Jennifer A Rabbitts
- Department of Anesthesiology and Pain Medicine, University of Washington School of Medicine, Seattle, WA, USA.,Center for Clinical and Translational Research, Seattle Children's Research Institute, Seattle, WA, USA
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Associations Between Musculoskeletal Pain Experience and Pressure and Cold Pain Sensitivity. Clin J Pain 2019; 35:56-64. [DOI: 10.1097/ajp.0000000000000650] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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Conditioned pain modulation identifies altered sensitivity in extremely preterm young adult males and females. Br J Anaesth 2018; 121:636-646. [PMID: 30115262 PMCID: PMC6200113 DOI: 10.1016/j.bja.2018.05.066] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2018] [Revised: 04/28/2018] [Accepted: 06/08/2018] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND Conditioned pain modulation is a potential biomarker for risk of persistent pain. As early-life experience can alter subsequent somatosensory processing and pain response, we evaluated conditioned pain modulation after extremely preterm birth. METHODS This observational study recruited extremely preterm (<26 weeks gestation; n=98) and term-born control (n=48) young adults (19-20 yr) from the longitudinal EPICure cohort. Pressure pain threshold (PPT; variable test stimulus lower leg) was measured before, during, and after a conditioning stimulus (contralateral hand immersion; 5°C water; 30 s). Questionnaires assessed current pain, medication use, anxiety, and pain catastrophising. RESULTS For participants tolerating conditioning, there were significant main effects of extremely preterm status, sex, and time on PPT during and after hand immersion. Inhibitory modulation was evoked in 64/98 extremely preterm (3, no change) and 38/48 term-born control (3, facilitation) subjects. The conditioned pain modulation effect (percentage change in PPT) did not differ between the extremely preterm and term-born control groups {53% [95% confidence interval (CI): 41-65] vs 57% [95% CI: 42-71]}. Reduced cold tolerance (<20 s) hampered conditioned pain modulation quantification in a higher proportion of extremely preterm participants [extremely preterm vs term-born control: 31/98 (32%) vs 7/48 (15%); P=0.03]. One-third of extremely preterm females withdrew the hand before parallel PPT (<15 s), and had lower baseline PPT than term-born control females [4.9 (95% CI: 4.8-5.1) vs 5.3 (95% CI: 5.1-5.5) ln kPa; P=0.02]. Higher anxiety, pain catastrophising, and medication use correlated with pain intensity, but not conditioned pain modulation effect. CONCLUSIONS Cold conditioning evoked inhibitory modulation in the majority of young adults and identified a subgroup of extremely preterm females with increased baseline sensitivity. Early-life experience and sex/gender should be considered when evaluating persistent pain risk with conditioned pain modulation.
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Abstract
This case report illustrates the value of a comprehensive perioperative pain assessment composed of quantitative sensory testing and self-reported measures that highlight the impact of pain experienced by a 14-year-old boy suffering from chronic low back pain and sciatica. Before surgery, the pain assessment revealed inefficient endogenous inhibitory pain control with presence of temporal summation of pain. The severe pain was constant and lasted for 18 months. The patient was in a high-anxiety state, and reported significant functional disability and poor sleep quality. Six months after surgery, the patient was pain free. Quantitative sensory testing showed an improvement in his inhibitory pain control with the absence of temporal summation of pain. The patient was no longer anxious, was back to normal functional abilities, and reported good sleep quality. By including neurophysiology and other pain measures, the clinical application of a comprehensive pain assessment can provide objective measurements of treatment efficacy.
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Lewandowski Holley A, C. Wilson A, M. Palermo T. Predictors of the transition from acute to persistent musculoskeletal pain in children and adolescents: a prospective study. ACTA ACUST UNITED AC 2017. [DOI: 10.5604/01.3001.0010.0209] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Strategies directed at the prevention of disabling pain have been suggested as a public health priority, making early identification of youth at risk for poor outcomes critical. At present, limited information is available to predict which youth presenting with acute pain are at risk for persistence. The aims of this prospective longitudinal study were to identify biopsychosocial factors in the acute period that predict the transition to persistent pain in youth with new-onset musculoskeletal (MSK) pain complaints. Participants were 88 children and adolescents (age 10-17 years) presenting to the emergency department (n = 47) or orthopedic clinic (n = 41) for evaluation of a new MSK pain complaint (<1 month duration). Youth presented for 2 study visits (T1≤1 month post pain onset; T2= 4-month follow-up) during which they completed questionnaires (assessing pain characteristics, psychological factors, sleep quality) and participated in a laboratory task assessing conditioned pain modulation. Regression analyses tested T1 predictors of longitudinal pain outcomes (pain persistence, pain-related disability, quality of life [QOL]). Results revealed approximately 35% of youth had persistent pain at 4-month follow-up, with persistent pain predicted by poorer conditioned pain modulation and female sex. Higher depressive symptoms at T1 were associated with higher painrelated disability and poorer QOL at T2. Findings highlight the roles of depressive symptoms and pain modulation in longitudinally predicting pain persistence in treatment-seeking youth with acute MSK pain and suggest potential mechanisms in the transition from acute to chronic MSK pain in children and adolescents.
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Affiliation(s)
- Amy Lewandowski Holley
- Department of Pediatrics, Institute on Development and Disability, Oregon Health & Science University, Portland, OR, USA,
| | - Anna C. Wilson
- Department of Pediatrics, Institute on Development and Disability, Oregon Health & Science University, Portland, OR, USA,
| | - Tonya M. Palermo
- Department of Anesthesiology and Pain Medicine, University of Washington, Seattle, WA, USA
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Predictors of the transition from acute to persistent musculoskeletal pain in children and adolescents: a prospective study. Pain 2017; 158:794-801. [PMID: 28151835 DOI: 10.1097/j.pain.0000000000000817] [Citation(s) in RCA: 79] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
Strategies directed at the prevention of disabling pain have been suggested as a public health priority, making early identification of youth at risk for poor outcomes critical. At present, limited information is available to predict which youth presenting with acute pain are at risk for persistence. The aims of this prospective longitudinal study were to identify biopsychosocial factors in the acute period that predict the transition to persistent pain in youth with new-onset musculoskeletal (MSK) pain complaints. Participants were 88 children and adolescents (age 10-17 years) presenting to the emergency department (n = 47) or orthopedic clinic (n = 41) for evaluation of a new MSK pain complaint (<1 month duration). Youth presented for 2 study visits (T1 ≤1 month post pain onset; T2 = 4-month follow-up) during which they completed questionnaires (assessing pain characteristics, psychological factors, sleep quality) and participated in a laboratory task assessing conditioned pain modulation. Regression analyses tested T1 predictors of longitudinal pain outcomes (pain persistence, pain-related disability, quality of life [QOL]). Results revealed approximately 35% of youth had persistent pain at 4-month follow-up, with persistent pain predicted by poorer conditioned pain modulation and female sex. Higher depressive symptoms at T1 were associated with higher pain-related disability and poorer QOL at T2. Findings highlight the roles of depressive symptoms and pain modulation in longitudinally predicting pain persistence in treatment-seeking youth with acute MSK pain and suggest potential mechanisms in the transition from acute to chronic MSK pain in children and adolescents.
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