The Role of Psychosocial Processes in the Development and Maintenance of Chronic Pain

Pain Catastrophizing, Beliefs and Perception, and Their Association With Profiling Characteristics in Athletes

CONTEXT

Variables associated with pain catastrophizing and beliefs in athletes presenting with musculoskeletal pain and/or sports-related injuries are largely unexplored.

OBJECTIVE

We aimed to evaluate which anthropometric, sociodemographic, sporting, injury history, and care-seeking characteristics were associated with the Pain Catastrophizing Scale (PCS) and Pain Beliefs and Perceptions Inventory (PBAPI) scores in athletes.

DESIGN

This study followed a cross-sectional design.

METHODS

Three hundred and twelve athletes (40% females) from different sports and levels completed a questionnaire including demographic information, details regarding sports practice, injury history, health care use, PCS, and PBAPI. Univariable associations between PCS and PBAPI scores and each variable were assessed using linear regression. Variables with univariable associations where P < .05 were entered into multivariable regression models.

RESULTS

The final multivariable model including gender, recurrent and persistent pain, a history of a severe atraumatic injury, and a history of more than 5 atraumatic injuries explained 14.9% of the variance in PBAPI scores. Performing a team sport and a history of more than 5 atraumatic injuries explained 5.1% of the variance in PCS scores.

CONCLUSIONS

Gender, sporting, and injury history characteristics explained only a small portion of the variance in PCS and PBAPI scores, whereas having received healthcare support and the number of appointments did not. Most of the variance was left unexplained.

Choline levels in the pregenual anterior cingulate cortex associated with unpleasant pain experience and anxiety

In vivo proton magnetic resonance spectroscopy is a non-invasive technique used to measure biochemical molecules such as choline, glutamate, glutamine, and γ-Aminobutyric acid (GABA), many of which are relevant to anxiety and pain. However, the relationship between these neurotransmitters/metabolites and their implications for anxiety and subjective experience of pain is not yet fully understood. The objective of this cross-sectional study was to investigate the association between anxiety and pain ratings with levels of total choline, glutamate and GABA in brain regions known to be involved in anxiety and emotional experience of pain, specifically pregenual anterior cingulate cortex (pgACC) and dorsal anterior cingulate cortex (dACC). The levels of the neurotransmitters/metabolites were measured using GABA-edited Mescher-Garwood PRESS for GABA measurements, with the OFF-sequence measurements for total choline (tCho) and Glx (combined glutamate + glutamine). The total choline (tCho) signal in our analysis included glycerophosphocholine (GPC) and phosphocholine (PC), which is consistent with standard practices in MRS studies. This approach ensures a robust estimation of tCho concentrations across participants. The study collected data from 38 participants (17 males and 21 females). The analysis revealed a significant correlation between anxiety ratings before a standardized pain provocation and the rated pain unpleasantness during the pain provocation. tCho correlated negatively with these parameters in pgACC. A linear regression analysis indicated that tCho levels in pgACC have a significant negative association with anxiety and perceived pain when controlling for age, depressive symptoms, and alcohol and tobacco intake. We also found that sex significantly moderates the relationship between pgACC choline levels and pain unpleasantness. The study suggests that levels of choline, an essential precursor of acetylcholine, are associated with anxiety and perceived pain. These levels may influence how Glx and GABA contribute to affective pain experiences by modulating the balance between excitatory and inhibitory signals. However, future research is needed to identify the mechanisms involved. Furthermore, the study indicates that sex is a significant factor in this relationship, with lower choline levels being associated with higher pain ratings in females but not in males. This highlights the significance of addressing sex as a biological factor in pain research to better understand the different responses to treatments and to facilitate the development of more effective interventions in the future.

The impact of opioid analgesics with concomitant antipsychotic use on pain modulation and management in internal medicine: a cross-sequential study protocol

Background

Acute and chronic pain represents an escalating public health concern, necessitating safer and more effective in-hospital management approaches, including mental health. New treatment combinations involving psycholeptics are rising, but real-world evidence is lacking.

Objectives

The study's primary objective is to evaluate the impact of combined opioid analgesics and antipsychotics in-hospital medication on pain modulation. The secondary objective is to evaluate pain management.

Methods

The cross-sequential study designed by this protocol will analyze retrospective data on 5,000 hospital admissions over four years (2019-2023) gathered from Electronic Health Records (EHR) of a multisite hospital in southern Switzerland. Eligible patients are aged 18 or older and hospitalized in an Internal Medicine ward. All patients with documented pain intensity assessment through a Visual Analogue Scale (VAS ≥ 1) will be included. Cross-sectional data on demographic and clinical variables and type of medication (opioid analgesics, antipsychotics, and selected other drugs according to the Anatomical Therapeutic Chemical classification system) will be screened at hospital admission (T1) and discharge (T2). Pain modulation will be assessed by gravity (VAS mean), intensity (VAS peak/extreme value), and pain treatment effectiveness (ΔT2-T1 VAS). Hospitalization paths (short- and long-term readmissions and total length of hospital stays) will be scrutinized as additional longitudinal indices for pain management and excluded from the cross-sectional analysis. A mixed model approach will assess VAS changes from T1 to T2. Logistic regression and regression models for count data will be used for short- and long-term readmission, respectively. Propensity score matching will be used to mitigate selection bias.

Discussion

This methodological approach combines cross-sectional and longitudinal EHR data gathering in a cross-sequential design. This integration allows for a comprehensive examination of pain modulation and management among internal medicine recipients of concomitant opioids and antipsychotic treatment, spanning both hospitalization and post-discharge periods. By leveraging EHR data, the study protocol ensures reliability and standardization while minimizing missing information. Additionally, the protocol addresses the potential limitations of observational designs.

Conclusions

This method offers a comprehensive and rigorous approach to investigating pain modulation and management in internal medicine patients receiving combined opioid analgesics and antipsychotics, with potential implications for enhancing clinical practice and healthcare resource utilization.

"It is something you live with, like an organ in your body" a qualitative study on the lived experiences of people suffering from chronic low back pain in Lebanon

PURPOSE

This paper aims to understand the distinctive biopsychosocial aspects and patient perspectives on chronic low back pain in Lebanon, an Arab country with a unique and rich cultural heritage.

METHOD

Qualitative, semi-structured interviews with 12 Lebanese patients purposefully sampled from various governorates. The interviews included participants from different geographic areas and religions. The data underwent analysis through an inductive thematic approach guided by a bounded relativist ontology, a subjectivist epistemology, and a descriptive phenomenological framework. The coding process was managed by computer-assisted qualitative data analysis software (QSR NVivo version 12.0).

RESULTS

The researchers identified and constructed two themes: (1) Chronic low back pain: understanding the impact, coping strategies, and communication patterns in lived experiences within the Lebanese context. This theme sheds light on the complexities of pain management and societal influences in Lebanon. (2) Explanatory model of patients living with chronic low back pain in Lebanon. This theme allowed an exploration of the multifaceted narratives of chronic low back pain.

CONCLUSION

This study found that Lebanese individuals attribute chronic low back pain to biomedical factors despite some recognizing psychosocial elements. It emphasizes the need to educate patients on the biopsychosocial model, facilitate better care, and dispel misconceptions.

Child maltreatment elevated the risk of late-life chronic pain: a biopsychosocial framework from the UK Biobank cohort

ABSTRACT

Understanding the development of chronic pain (CP) is challenging due to its multifactorial etiology. Child maltreatment (CM), encompassing various types of neglect and abuse affecting more than one-third of the population, is a critical aspect of early-life adversity with long-lasting impacts. It is increasingly recognized for its role in altering biopsychosocial processes, potentially increasing vulnerability to CP. However, the exact path connecting CM to CP is not fully elucidated, primarily attributable to limitations in prior research, including insufficient sample sizes, inadequate consideration of comprehensive mediative variables, and a lack of longitudinal data. To address these gaps, our study utilizes a large-scale dataset (n = 150,989) comprising both cross-sectional and longitudinal data, along with an extensive range of biopsychosocial variables. Our findings reveal that all types of CMs, except physical neglect, significantly increase the risk of CP, and all types of CPs, except headache, were affected by CM. Furthermore, we demonstrate that individuals with CM histories are more predisposed to comorbid CP conditions. Importantly, biopsychosocial factors are found to explain over 60% of the association between CM and CP, with psychological factors playing a key role. This study not only characterizes the relationship between CM and CP but also underscores the influence of psychosocial elements in this dynamic interplay. These findings offer important insights into the long-term impacts of CM and provide a foundation for developing targeted therapeutic and preventive strategies for CP.

Associations of abuse experiences in childhood/adolescence and adulthood to pain, sexual functioning, and mental health among women with urogenital pain

OBJECTIVE

Urogenital pain affects 14-25 % of women and is predicted by prior abuse. The purpose of this study was to investigate associations of abuse type (sexual, physical, emotional, verbal) and timing (childhood, adolescence, adulthood) on outcomes (depression, anxiety, pain, sexual functioning).

METHODS

Women (N = 350; age M = 48.44) presenting with pain at a tertiary women's urology center reported whether they had experienced each type of abuse at each time point and completed outcome measures.

RESULTS

Latent class analysis of abuse types and timings identified a 4-class solution which differed primarily in phase of life for which abuse types (verbal, emotional, and physical, but not sexual) were elevated: 1) little or no abuse throughout life (66.6 %), 2) childhood/adolescent abuse only (14.6 %), 3) adulthood abuse only (8.3 %), or 4) abuse across the life course (10.6 %). Statistical comparisons between classes revealed abuse throughout life or in childhood/adolescence only was associated with depression and abuse throughout life, with anxiety (p < .001, d = 0.48-1.40), compared to no abuse. However, abuse over life or in adulthood only, but not childhood/adolescent only, was associated with pain interference, pain intensity, and low sexual satisfaction (p < .05, d = 0.38-0.77).

CONCLUSION

These patterns suggest that when abuse occurs may matter differentially in terms of mental and physical health; abuse (especially emotional/verbal and physical) in both childhood and adulthood may predispose to poor mental health, whereas adulthood abuse may be more associated with pain and functioning. One should assess when abuse occurs-including adulthood-in addition to type of abuse to understand its association with outcomes.

Chronic Pain and Obsessive-Compulsive Disorder: A Scoping Review

INTRODUCTION

The aim of this study was to map the association between Chronic Pain (CP) and Obsessive-Compulsive Disorder (OCD) in the present literature.

METHODS

A scoping review was conducted with a comprehensive search of literature in peer-reviewed journals. Search parameters included articles written in English, published at any time, and including terms associated with both CP and OCD. Databases searched for purposes of this study included Psychinfo, Medline, Embase, Emcare, CINAHL, Scopus, Web of Science, Cochrane, and Google Scholar.

RESULTS

The review included 87 records, comprising 49 primary research and 38 secondary research records. Extracted information from these were grouped into four broad classifications. The Prevalence and Severity classification included information from 39 records which comprised: (1) primary research detailing current OCD prevalence rates in CP conditions (differentiated between general population and Pain/Medical/Hospital clinics); (2) primary research detailing lifetime OCD prevalence rates in CP conditions; (3) primary research detailing CP prevalence rates in OCD; (4) primary research detailing relationships between OCD and CP through psychometric measures; and (5) secondary research relating to prevalence rates. The Neurobiology classification included information from 28 records (primary and secondary research) detailing convergent and divergent neurobiological/neurophysiological aspects as reported for both OCD and CP. The Psychological Models/Factors classification included information from 7 records (primary and secondary research) detailing pain-related anxiety, neuropsychological measures, catastrophic thinking, preservative thinking, early maladaptive schemas, schema modes, childhood trauma experiences, and conditional associative learning, as reported for OCD and CP. The Intervention classification included information from 32 records which comprised: (1) primary research on neurosurgical, medication, and psychotherapeutic interventions; (2) secondary research on Deep Brain Stimulation; (3) secondary research on Medication; (4) secondary research on lesion, cingulotomy, and other surgical procedures; and (5) secondary research on other interventional procedures.

CONCLUSION

While there has been considerable and growing research in the fields of both OCD and CP over the years, focused research into their potential association has been limited and potentially overlooked. The results of this review, however, suggest a complex relationship between CP and OCD. Prevalence rates between the two conditions vary widely across different populations, although the underlying reason for this remains unclear at this stage. There are commonalities in terms of alterations in pain processing, the dysregulation of certain brain regions, and the abnormalities in neurotransmitter systems in both conditions. In their treatment, use can be made of overlapping pathophysiological processes, the convergent and divergent psychological aspects, and the range of interventional approaches that share targets to promote efficacy. However, the complex presentations of both OCD and CP make it a challenging relationship to accurately clarify. Further directed and robust, high-quality studies will be needed to expand our understanding of this area.

Predicting Clinical Outcomes at the Toronto General Hospital Transitional Pain Service via the Manage My Pain App: Machine Learning Approach

Background

Chronic pain is a complex condition that affects more than a quarter of people worldwide. The development and progression of chronic pain are unique to each individual due to the contribution of interacting biological, psychological, and social factors. The subjective nature of the experience of chronic pain can make its clinical assessment and prognosis challenging. Personalized digital health apps, such as Manage My Pain (MMP), are popular pain self-tracking tools that can also be leveraged by clinicians to support patients. Recent advances in machine learning technologies open an opportunity to use data collected in pain apps to make predictions about a patient's prognosis.

Objective

This study applies machine learning methods using real-world user data from the MMP app to predict clinically significant improvements in pain-related outcomes among patients at the Toronto General Hospital Transitional Pain Service.

Methods

Information entered into the MMP app by 160 Transitional Pain Service patients over a 1-month period, including profile information, pain records, daily reflections, and clinical questionnaire responses, was used to extract 245 relevant variables, referred to as features, for use in a machine learning model. The machine learning model was developed using logistic regression with recursive feature elimination to predict clinically significant improvements in pain-related pain interference, assessed by the PROMIS Pain Interference 8a v1.0 questionnaire. The model was tuned and the important features were selected using the 10-fold cross-validation method. Leave-one-out cross-validation was used to test the model's performance.

Results

The model predicted patient improvement in pain interference with 79% accuracy and an area under the receiver operating characteristic curve of 0.82. It showed balanced class accuracies between improved and nonimproved patients, with a sensitivity of 0.76 and a specificity of 0.82. Feature importance analysis indicated that all MMP app data, not just clinical questionnaire responses, were key to classifying patient improvement.

Conclusions

This study demonstrates that data from a digital health app can be integrated with clinical questionnaire responses in a machine learning model to effectively predict which chronic pain patients will show clinically significant improvement. The findings emphasize the potential of machine learning methods in real-world clinical settings to improve personalized treatment plans and patient outcomes.

Adverse Childhood Experiences (ACEs) in Specific Vulnerable Developmental Periods Can Increase the Likelihood of Chronic Pain in Adulthood-Results from a Cross-Sectional Study

Background: Adverse childhood experiences (ACEs) have been identified as a major risk factor for physical and mental ill health in adulthood. So far, no studies have investigated whether ACEs during sensitive periods in infant development are associated with a higher likelihood of chronic pain (CP) in adulthood. Methods: Patients of the University Hospital of Innsbruck (Austria) completed questionnaires retrospectively assessing their ACEs as well as their current levels of CP, psychological distress, and trauma-related symptoms in this cross-sectional study. Dose-dependent associations of ACEs with CP were investigated through binary logistic regressions. To detect vulnerable developmental periods, a machine learning grid search was applied. Results: A total of n = 2577 patients were included in the analyses, with 31.5% reporting CP. Polytraumatization (i.e., four or more types of ACEs) was associated with a threefold increase for CP (OR: 3.01; 95% CI: 2.16-4.19; p < 0.001). The machine learning approach revealed maltreatment between 10 and 12 years to be the most predictive of CP (Ada Boost Classifier). Discussion: CP is a highly prevalent symptom among hospital patients and is clearly associated with ACEs. This is the first study to present evidence for a timing-dependent association of ACEs with CP. Early identification and appropriate psychosocial support for patients with ACEs is a crucial task for healthcare professionals.

Pain Intensity and Pain Catastrophizing Among Patients with Chronic Pain: The Mediating Effect of Self-Efficacy

Aim

This study aimed to explore the mediating role of sense of self-efficacy in the relationship between pain intensity and pain catastrophizing among chronic pain patients.

Methods

A questionnaire survey was administered to patients with chronic pain at the pain intervention departments of three tertiary hospitals in Shaanxi Province between July 2023 and July 2024. The visual analogue scale, chronic pain self-efficacy scale, and pain catastrophizing scale were used to assess the patients' pain intensity, self-efficacy, and pain catastrophizing degree, respectively. SPSS 27.0 and Mplus 8.3 software were used for statistical analysis.

Results

This study included a total of 430 patients with chronic pain. The average score for catastrophizing pain among participants was 22.76 (score range 0-52), which is considered moderate. Pain intensity and pain catastrophizing were significantly and positively correlated, and the findings found that chronic pain self-efficacy mediated the correlation between pain intensity and pain catastrophizing after controlling for sociodemographic and disease-related variables. In addition, chronic pain self-efficacy was found to be an important mediator, accounting for 32.5% of the total effect.

Conclusion

Among patients with chronic pain, chronic pain self-efficacy explains the relationship of pain intensity and pain catastrophizing. These findings imply that interventions that decrease pain intensity and increase patients' sense of self-efficacy are beneficial for improving pain catastrophizing in this population.

Two in one: a randomized controlled trial on an internet-based intervention (Lenio) for management of both chronic pain and depressive symptoms

The high prevalence of chronic pain and comorbid depression, along with their negative impacts on individuals and society, highlights the need for accessible and effective interventions. This study examined the feasibility, efficacy, and acceptability of Lenio, an Internet-based self-help intervention, combined with the COGITO smartphone application for managing these conditions. The randomized controlled trial involved an intervention group (IG) using Lenio and COGITO, an active control group (ACG) using a transdiagnostic app, and a wait-list control group (WCG) receiving usual treatment. Lenio incorporates cognitive behavioral therapy and third-wave techniques, supported by COGITO's gamified daily exercises to enhance adherence. Across 263 participants assessed at three intervals over 16 weeks, the IG showed significant improvement in somatic-affective depressive symptoms compared to the WCG post-intervention and both control groups at follow-up. However, the ACG outperformed the IG in managing pain at post-intervention though these effects did not persist until follow-up. The interventions were well-received and feasible, with older participants benefiting more from the Lenio/COGITO combination. Lenio and COGITO could bridge gaps to conventional therapy, potentially easing pain by enhancing psychological well-being and coping strategies. Future studies should investigate tailored interventions for chronic pain and their long-term effectiveness.

Protocol

Full trial protocol can be accessed via DOI: 10.1186/s13063-023-07440-8.

Clinical trial registration

https://drks.de/register/de/trial/DRKS00026722/preview, identifier DRKS-IDDRKS00026722.

Cooled radiofrequency ablation provides extended clinical utility in the management of chronic sacroiliac joint pain: 12-month follow-up results from the observational phase of a randomized, multicenter, comparative-effectiveness crossover study

INTRODUCTION

Sacroiliac joint (SIJ) pain comprises up to 30% of cases of mechanical low back pain (LBP), the leading cause of disability worldwide. Despite sacral lateral branch cooled radiofrequency ablation (CRFA) showing efficacy in clinical trials, there is a lack of comparative-effectiveness long-term follow-up.

METHODS

In this randomized, multicenter, comparative-effectiveness study, 210 patients with injection-confirmed SIJ pain who responded to prognostic lateral branch blocks were randomly assigned to receive CRFA of the L5 dorsal ramus and S1-S3/4 lateral branches or standard medical management (SMM) consisting of pharmacotherapy, physical therapy, injections, and integrative therapies. Patients were followed up at 1, 3, 6, 9, and 12 months, with participants reporting unsatisfactory SMM outcomes being allowed to crossover (XO) and receive CRFA at 3 months. The primary outcome measure was the mean change in average LBP score on a 0-10 Numeric Rating Scale (NRS), with secondary outcomes including measures of quality of life (QoL) and function. A responder was defined as a participant who experienced a ≥30% or ≥2-point decrease in average daily NRS pain score coupled with a score ≥5 out of 7 (moderately better) on the Patient Global Impression of Change scale.

RESULTS

At 12 months, the mean NRS pain score declined from a baseline of 6.4±1.4 to 3.5±2.6, with 57.4% (35/61) of participants in the randomized CRFA cohort experiencing a ≥2-point or 30% decrease in average LBP from baseline. In the crossover cohort, 35/63 (55.6%) subjects had the same experience 12 months following the XO procedure; in the XO group, the mean LBP decreased from 6.1±1.5 to 3.4±2.5. Patients also experienced clinically meaningful improvements in QoL via EuroQoL-5D-5L at 12 months (mean change of +0.22±0.27 in the originally-treated CRFA group and +0.21±0.33 in the XO group). Oswestry Disability Index (ODI) scores also improved by 12.4%±14.7 (CRFA) and 13.7%±17.1 (XO) from baseline at study-end. No serious adverse events related to the CRFA procedure were reported.

CONCLUSION

CRFA in patients with SIJ pain provided clinically significant and sustained improvements for 12 months following a single CRFA treatment, regardless of previous SMM treatment.

TRIAL REGISTRATION NUMBER

NCT03601949.

Grit and Chronic Pain: Associations with Distress, Catastrophizing, Interference, and Control

Individuals with chronic pain frequently experience emotional distress, negative beliefs, functional limitations, and poor sense of control. Grit, the ability to persist toward goals through passion and perseverance, has been linked to enhanced coping in chronic medical conditions but has received limited attention in the context of chronic pain. This cross-sectional study evaluated the relationship of grit to adjustment in participants with chronic pain (N = 58). Controlling for pain severity, conscientiousness, and neuroticism, greater grit was associated with lower pain catastrophizing (p = .000) and pain interference (p = .02) and greater life control (p = .02); grit was not significantly related to pain distress (p = .07). Prospective, longitudinal research on the relationship between grit and pain outcomes is warranted.

Provoked cytokine response is not associated with distress or induced secondary hyperalgesia in people with suppressed HIV

Psychological distress predicts the onset and worsening of persistent pain, but the mechanisms that underpin this influence are poorly understood. Pro-inflammatory signalling is a plausible mechanistic link, given its known connections to distress, pain, and neural upregulation. Sustained distress may prime the inflammatory system to respond more strongly to a phasic noxious challenge, supporting neuroimmune upregulation of central nociceptive signalling and persistent pain. This cross-sectional study tested the hypotheses that in vitro endotoxin-provoked expression of typically pro-inflammatory cytokines (IL1β, IL6) is a partial mediator between distress and persistent pain, and that it is associated with the secondary hyperalgesia response to an experimental noxious challenge, in people with suppressed HIV. Study participants were 99 adults (mean (range) age: 43(28-64y/o; 72 females) with either no pain (n=54) or persistent pain (n=45), mostly of black South African ethnicity, low socio-economic status, and with high social support. The results replicated previous reports that distress is associated with persistent pain status and pain severity, and also showed an association between distress and the anatomical extent of pain. However, distress was not associated with provoked cytokine expression, nor was provoked cytokine expression associated with secondary hyperalgesia. The conflict between our findings and the evidence on which our hypotheses were based could reflect masking of an effect by differentially trained immune systems or a more complex relationship arising from diverse psychoneuroimmunological interactions in this sample. Our sample's combination of HIV status, African genetic ancestry, financial impoverishment, and rich social interconnectedness is poorly represented in current research and represents an opportunity to deepen insight into psychoneuroimmunological interactions related to distress and persistent pain.

Trauma and TMD: The association between orofacial trauma and temporomandibular disorders in a tertiary referral clinic

OBJECTIVE

Between 5-12% of the population suffers from Temporomandibular disorders (TMDs). TMDs are known for their multifactorial aetiology and one of the proposed associated factors is orofacial trauma. This study investigated the possible association between orofacial trauma and TMD in a tertiary referral clinic.

METHODS

Patients were diagnosed with one or more TMD diagnoses; myalgia, arthralgia, headache associated with TMD and/or a TMD function diagnosis. 659 consenting patients were included. The majority were female. Ages ranged between 18 and 86 years. All patients were included in a logistic regression analysis, and 236 were included in a network analysis.

RESULTS

Neither analysis yielded a statistically significant association between orofacial trauma and TMD. Results showed associations between psychosocial variables and TMD diagnoses.

DISCUSSION

These results are contradictory to a recent review, where an association between orofacial trauma and TMD was found. The results on psychosocial variables and TMD diagnoses are corroborated by literature.

CONCLUSION

In conclusion, in this tertiary referral clinic, no association between orofacial trauma and TMD was found.

Identifying patient subgroups in the heterogeneous chronic pain population using cluster analysis

Chronic pain is an ill-defined disease with complex biopsychosocial aspects, posing treatment challenges. We hypothesized that treatment failure results, at least partly, from limited understanding of diverse patient subgroups. We aimed to identify subgroups using psychological variables, allowing for more tailored interventions. In a retrospective cohort study, we extracted patient-reported data from two Dutch tertiary multidisciplinary outpatient pain clinics (2018-2023) for unsupervised hierarchical clustering. Clusters were defined by anxiety, depression, pain catastrophizing, and kinesiophobia. Sociodemographics, pain characteristics, diagnosis, lifestyle, health-related quality of life and treatment efficacy were compared among clusters. A prediction model was built utilizing a minimum set of questions to reliably assess cluster allocation. Among 5466 patients with chronic pain, three clusters emerged. Cluster 1 (n=750) was characterized by high psychological burden, low health-related quality of life, lower educational levels and employment rates, and more smoking. Cluster 2 (n=1795) showed low psychological burden, intermediate health-related quality of life, higher educational levels and employment rates, and more alcohol consumption. Cluster 3 (n=2909) showed intermediate features. Pain reduction following treatment was least in cluster 1 (28.6% after capsaicin patch, 18.2% after multidisciplinary treatment), compared to >50% for both treatments in clusters 2 and 3. A model incorporating 15 psychometric questions reliably predicted cluster allocation. In conclusion, our study identified distinct chronic pain patient clusters through 15 psychological questions, revealing one cluster with notably poorer response to conventional treatment. Our prediction model, integrated in a web-based tool, may help clinicians improve treatment by allowing patient-subgroup targeted therapy according to cluster allocation. PERSPECTIVE: Hierarchical clustering of chronic pain patients identified three subgroups with similar pain intensity and diagnoses but distinct psychosocial traits. One group with higher psychological burden showed poorer treatment outcomes. A web-based tool using this model could help clinicians tailor therapies by matching interventions to specific patient subgroups for improved outcomes.

Translation, cross-cultural adaptation, and measurement properties of the Arabic version of the fear avoidance components scale

PURPOSE

This study aimed to translate, validate, and cross-culturally adapt the original FACS into the Arabic language.

METHODS

The English version of the FACS was translated and culturally adapted into Arabic following international guidelines. The psychometric properties of the final version of the FACS-Arabic (FACS-A) were tested among 119 patients with different musculoskeletal (MSK) pain disorders.

RESULTS

The Cronbach's α for the FACS-A was 0.86. The test-retest reliability, measured with intraclass correlation coefficient, was 0.80. The FACS-A showed positive significant correlations with other psychological patient-reported measures, including the pain catastrophizing scale (PCS) (r = 0.545); p ≤ 0.01), Brief Pain Inventory (BPI)-pain score (r = 0.546; p ≤ 0.01), BPI-pain interference score (r = 0.511; p ≤ 0.01), and Hospital Anxiety and Depression Scale (HADS) (r = 0.451, 0.336, respectively; p ≤ 0.01). Confirmatory factor analysis of the FACS-A confirmed the two-factor structure found in the original English version.

CONCLUSION

This study determined the FACS-A to be a reliable and valid tool for the assessment of the fear-avoidance beliefs in Arabic-speaking individuals with MSK pain disorders.

Neural circuits and therapeutic mechanisms of empathic pain

Empathy is the capacity to understand and share the experiences of others. This ability fosters connections between individuals, enriching the fabric of our shared world. One notable example is empathy for the pain of others. Such experiences facilitate the identification of potential dangers, both for oneself and for others. Neuroimaging studies have helped to pinpoint brain regions that modulate empathic pain. Recently, there has also been a surge in studies exploring the neural mechanisms of empathic pain in rodent models. Neuropsychiatric disorders such as autism, psychosis, and schizophrenia often exhibit empathy deficits. Targeting the modulation of empathic pain holds potential for alleviating core symptoms in these patients. Interestingly, empathy research may also benefit pain management, leading to new approaches for understanding the negative emotions associated with pain. This review summarizes recent advances in neuroimaging for the study of empathic pain, outlines the underlying neurocircuit mechanisms, describes therapeutic strategies, and explores promising avenues for future research. This article is part of the Special Issue on "Empathic Pain".

Childhood abuse and health outcomes in patients with fibromyalgia: a cross-sectional exploratory study of the moderating effects of pain catastrophizing and mindfulness

BACKGROUND

Childhood abuse has been linked to poorer health outcomes in individuals with fibromyalgia (FM), and this relationship may be affected by cognitive processes such as pain catastrophizing and mindfulness.

OBJECTIVE

This study investigated the impact of childhood abuse on pain-related symptoms and functioning in individuals with (FM) and examined how the critical psychosocial constructs of pain catastrophizing and mindfulness might moderate this relationship. We hypothesized that childhood abuse would be linked to greater physical symptoms and lower functioning, with pain catastrophizing and mindfulness influencing these associations.

METHODS

The study sample consisted of 113 women with FM. Correlational analyses were conducted to examine the relationship between childhood abuse and health outcomes (pain severity, pain interference, fibromyalgia impact, and physical functioning). Moderation analyses were conducted to examine the impact of pain catastrophizing and mindfulness on the relationship between childhood abuse and health outcomes.

RESULTS

As expected, catastrophizing was generally associated with elevated pain-related symptomatology and reduced functioning, and higher levels of mindfulness were associated with reduced pain impact. However, contrary to our hypothesis, childhood abuse was not directly associated with pain severity, pain interference, fibromyalgia impact, or physical functioning. Pain catastrophizing and mindfulness were significant moderators of the relationship between childhood abuse and health outcomes. Specifically, childhood abuse was related to higher pain interference only at low levels of catastrophizing and was associated with greater fibromyalgia impact and reduced physical functioning only at high levels of mindfulness.

CONCLUSION

Our findings suggest that while childhood abuse did not directly impact pain-related outcomes in this sample of fibromyalgia patients, cognitive factors like pain catastrophizing and mindfulness play significant roles in moderating these effects. These results underscore the importance of assessing for cognitive and psychological factors in the management of fibromyalgia, especially for patients with a history of childhood abuse. Further research is needed to explore these relationships in more diverse samples and to develop personalized and targeted interventions for this patient population.

Distress is positively associated with induced secondary hyperalgesia in people with suppressed HIV

Pain and distress are frequently reported by people with HIV. Although pain is widely acknowledged to contribute to distress, distress may also contribute to pain and its persistence. Given the evidence supporting a relationship between distress and clinical pain, the current study investigated the relationships between distress, secondary hyperalgesia (SH), and persistent pain in people with HIV, reporting pain (n=19) or being pain free (n=26). We anticipated that SH is an important link between distress and persistent pain, with distress potentially exacerbating pain by increasing the responsiveness of neurons in the central nervous system to nociceptive signalling. Our primary hypothesis was that self-reported distress would be positively associated with the induced surface area (primary measure) and magnitude (secondary measure) of SH. The secondary hypothesis was that individuals with persistent pain would display greater induced SH compared to those who reported being pain-free. The results showed that distress was positively associated with the surface area (p=0.02) and the magnitude (p=0.01) of induced SH. However, participants with persistent pain showed no difference in the surface area of SH compared to pain-free participants (p=0.87), and those with pain displayed a marginally lower magnitude of SH (p=0.05). These findings suggest that distress may be a worthy target of interventions in people exposed to acutely painful events. While this relationship may not be specific to people with HIV, further research is needed to establish its relevance to people without HIV.

Interpersonal dyadic influences on transitions between pain states: a narrative review and synthesis

ABSTRACT

Pain is not experienced in isolation; it is affected by and affects other people. Interactions between parents and partners and people living with pain affect beliefs, emotions and behaviours, and pain progress and change. We searched systematically for longitudinal studies of associations between specific familial, dyadic, interpersonal factors and quantitative pain transitions. We coded studies for risk of bias. For the narrative synthesis, we grouped findings by dyads-parents and children, and people with pain and their partners (usually spouses), and then by the psychosocial mechanism/s. We described certainty of evidence for each pain transition and each mechanism. Patient and public contributors were involved throughout. Of 52 studies, 38 were of parents and children (27,814 dyads) and 14 of partners (4904 dyads). Three groups of predictive factors were identified for parent and child studies: parent mental health, parent cognitions, and parent behaviours. Parental anxiety (but not depression) predicted children's onset of pain and worsening; the evidence was of moderate certainty and almost exclusively involved mothers. Evidence that some parental behaviours, such as protective behaviours, were associated with worse child pain was of very low certainty. The evidence for partners was of poor quality, precluding synthesis. The review highlights that most interpersonal pain research fails to capture the complex dynamics of longstanding relationships and highlights the difficulty of doing so using simple models.

The relationship between spiritual wellbeing, pain catastrophizing, and pain perception: An exploration of pain perception in individuals with chronic pain

Spiritual wellbeing correlates with improved pain perception. We hypothesize that pain catastrophizing, which correlates with worsened pain, partially explains this relationship. In this cross-sectional, human laboratory-based study, 120 US Americans with chronic pain completed self-report measures of spiritual wellbeing, pain catastrophizing, and their subconstructs. A cold pressor task measured pain perception (i.e. pain sensitivity and pain tolerance). Multiple regressions evaluated the relationship between spiritual wellbeing (and its subconstructs) and pain perception with and without the inclusion of pain catastrophizing (and its subconstructs). No direct relationships were found between spiritual wellbeing or its subconstructs and pain sensitivity, although helplessness significantly altered regression coefficients. Spiritual wellbeing, meaning, and peace associated less strongly with pain tolerance controlling for pain catastrophizing, helplessness, and (for peace) magnification. This shows that many of the links between spiritual wellbeing and pain perception are indirect, through pain catastrophizing and especially helplessness.

Exploring Multidisciplinary Approaches to Comorbid Psychiatric and Medical Disorders: A Scoping Review

Psychiatric disorders often coexist with internal medical conditions, posing significant challenges to diagnosis, treatment, and overall patient outcomes. This study examines the bidirectional relationship between these conditions, emphasizing their impact on morbidity, treatment adherence, and quality of life. Through a comprehensive review of the peer-reviewed literature, we explore the physiological, neuroinflammatory, and psychosocial mechanisms that underpin these interactions. Key psychiatric disorders, including depression, anxiety, cognitive impairments, and psychosis, are identified as critical contributors to diagnostic complexity and therapeutic hurdles. Our findings underscore the importance of integrated, multidisciplinary care models, advocating for early detection, routine mental health screening, and personalized treatment strategies. Challenges such as overlapping symptoms, diagnostic ambiguities, and potential drug interactions are critically analyzed, with practical, evidence-based recommendations proposed for clinical practice. Despite advancements, significant research gaps persist, particularly the lack of longitudinal studies and the limited application of precision medicine tailored to this population. Future directions focus on enhancing diagnostic tools, developing innovative therapeutic approaches, and integrating mental health services into routine care. This study highlights the critical need for holistic, patient-centered approaches to manage comorbid psychiatric and internal medical conditions, offering actionable insights to improve outcomes and bridge existing gaps in research and practice.

Examining the epigenetic transmission of risk for chronic pain associated with paternal post-traumatic stress disorder: a focus on veteran populations

Chronic pain is a public health problem that significantly reduces quality of life. Although the aetiology is often unknown, recent evidence suggests that susceptibility can be transmitted intergenerationally, from parent to child. Post-traumatic stress disorder (PTSD) is a debilitating psychological disorder, often associated with chronic pain, that has high prevalence rates in military personnel and Veterans. Therefore, we aimed to characterise the epigenetic mechanisms by which paternal trauma, such as PTSD, is transmitted across generations to confer risk in the next generation, specifically focusing on Veterans where possible. Numerous overlapping neurological pathways are implicated in both PTSD and chronic pain; many of which are susceptible to epigenetic modification, such as DNA methylation, histone modifications, and RNA regulation. Hence, epigenetic changes related to pain perception, inflammation, and neurotransmission may influence an individual's predisposition to chronic pain conditions. We also examine the effects of PTSD on parenting behaviours and discuss how these variations could impact the development of chronic pain in children. We highlight the need for further research regarding the interactions between paternal trauma and epigenetic processes to ultimately generate effective prevention and therapeutic strategies for Veterans who have been affected by PTSD and chronic pain.

Recognizing pain phenotypes: biopsychosocial sources of variability in the transition to chronic postsurgical pain

Chronic postsurgical pain (CPSP) is a cause of new chronic pain, with a wide range of reported incidence. Previous longitudinal studies suggest that development of CPSP may depend more on the constellation of risk factors around a patient (pre-existing pain phenotype) rather than on the extent of surgical injury itself. The biopsychosocial model of pain outlines a broad array of factors that modulate the severity, longevity, and impact of pain. Biological variables associated with CPSP include age, sex, baseline pain sensitivity, and opioid tolerance. Psychological factors, including anxiety, depression, somatization, sleep disturbance, catastrophizing, and resilience, and social factors, like education and social support, may also importantly modulate CPSP. Prevention efforts have targeted acute pain reduction using multimodal analgesia (regional anesthesia and intraoperative analgesic adjuvant medications). However, studies that do not measure or take phenotypic risk factors into account (either using them for enrichment or statistically as effect modifiers) likely suffer from underpowering, and thus, fail to discern subgroups of patients that preventive measures may be most helpful to. Early preoperative identification of a patient's pain phenotype allows estimation of their constellation of risk factors and may greatly enhance successful, personalized prevention of postoperative pain. Effective preoperative employment of behavioral interventions like cognitive-behavioral therapy, stress reduction, and physical and mental prehabilitation may particularly require knowledge of a patient's pain phenotype. Preoperative assessment of patients' pain phenotypes will not only inform high-quality personalized perioperative care clinically, but it will enable enriched testing of novel therapies in future scientific studies.

Physical function estimates change in pain following IIPT among children with chronic pain

INTRODUCTION

Chronic pain can negatively impact a child's quality of life. Pediatric Intensive Interdisciplinary Pain Treatment (IIPT) programs aim to improve overall functioning despite pain through various rehabilitative strategies. It is, however, unclear whether improved function corresponds to self-reported decrease in pain levels. Hence, the purpose of this study is to examine the relationship between changes in physical function and perceived pain among children with chronic pain who have undergone inpatient IIPT.

MATERIALS AND METHODS

A secondary analysis of pre-existing databases of IIPT from two different inpatient acute rehabilitation programs was carried out. Children and adolescents (N = 309; age = 16.2 ± 2.6; 79% females) with chronic pain who attended on average 4-week inpatient IIPT from Nov 2011 to Jan 2023 were included. Participants completed pain intensity (Numerical Pain Rating Scale) and self-reported function measures (Lower Extremity Functional Scale [LEFS], Upper Extremity Functional Index [UEFI], Canadian Occupational Performance Measure [COPM]-Performance, and COPM-Satisfaction) at admission and discharge.

RESULTS

Change in self-reported physical function was significantly associated with change in pain from admission to discharge. After covariate adjustment, self-reported physical function (per the LEFS, UEFI, COPM-Performance, and COPM-Satisfaction) explained 19.8%, 7.8%, 12.0%, and 8.6% of the variance in change in pain, respectively. These measures of self-reported physical function further distinguished between minimal (<30%) and moderate (≥30%) pain reduction.

CONCLUSIONS

Self-reported functional gains during IIPT are associated with greater change in perceived pain. Moreover, measures of self-reported physical function can help identify children at risk of minimal pain reduction post-IIPT.

The multidisciplinary team in the management of chronic pain and pain-related fear: an evidence-based approach in a clinical case

PURPOSE

Pain is a complex, intimate, and subjective experience influenced by biological, psychological, and social factors. This case report investigates the effectiveness of a multidisciplinary team approach in addressing chronic pain and pain-related fear.

CASE DESCRIPTION

The case report describes a 22-year-old female who experienced anterior knee pain for seven years, despite undergoing two knee surgeries and physiotherapy without improvement. Following a comprehensive assessment, which included a detailed medical history, clinical examination, and thoughtful clinical analysis, a multidisciplinary approach was recommended. Employing an evidence-based methodology that integrated neurocognitive rehabilitation techniques, including Pain Neuroscience Education, Graded Motor Imagery, and Tactile Discrimination Training, alongside psychological rehabilitation strategies such as Mindfulness, Acceptance and Commitment Therapy, and Problem-Solving Therapy, the report presents a comprehensive in-depth rehabilitation plan exemplifying the application of this multimodal approach within a clinical setting in a patient with chronic pain. This approach is designed not to address the biomechanical aspects but to delve into the cognitive facets associated with pain perception and avoidance, as well as potential psychological factors that may be influencing the onset and persistence of symptoms.

OUTCOMES

The scores from the rating scales provided valuable insights into patient progress in pain management, functional improvement, fear of movement, and overall physical, psychological, and emotional well-being, at six months.

CONCLUSION

This case report offers valuable insights into the usefulness of this multidisciplinary and multimodal approach, highlighting its potential as an avenue in the management of chronic pain and pain-related fear.

Improvements in pain interference among geographically diverse adults with neurofibromatosis: Results from a fully powered randomized controlled trial

Background

Pain is prevalent among adults with neurofibromatoses (NF) and hinders quality of life. Pain management for NF is predominantly pharmacological and often ineffective. Psychosocial treatments improve pain outcomes in other chronic illness populations but have not been developed and tested in fully powered efficacy trials among adults with NF. Using data from a fully powered randomized clinical trial of an 8-week mind-body program (Relaxation Response Resiliency Program for NF [3RP-NF]) versus a health education control (HEP-NF), we examined (1) improvements in pain intensity and pain interference, and (2) mechanisms underlying improvements.

Methods

Participants (N = 210, M age = 42.6, 73.4% female) were randomized to 3RP-NF versus HEP-NF. They completed measures of pain intensity, pain interference, and putative mechanisms (eg, mindfulness, coping, and social support) at baseline, post-intervention, 6-month, and 12-month follow-ups.

Results

There was a statistically significant change in pain interference over time F(3, 537.06) = 7.21, P < .001, but not pain intensity. Neither group (3RP-NF vs. HEP-NF) nor the group-by-time interaction predicted change in pain interference. While the group-by-time interaction was not statistically significant across all time points, planned post-hoc analyses probing the interaction at specific time points revealed a statistically significant decrease in pain interference from baseline to post-intervention (P < .001), which was sustained (ie, no subsequent change) from post-intervention through 6-month (P = 1.00) and 12-month follow-ups (P = 1.00) in the 3RP-NF group. The HEP-NF group had no significant changes in pain intensity or interference over time. The association between group (3RP-NF) and decreased pain interference from baseline to post-intervention was fully mediated by change in coping over the same period.

Conclusions

Participation in the 3RP-NF is associated with sustained improvement in pain interference. Improvement occurred through increased coping.

Trial Registration

ClinicalTrials.gov Identifier: NCT03406208.

Trial Registration URL

https://clinicaltrials.gov/study/NCT03406208.

The association between childhood maltreatment and pain sensitivity in a high-risk adolescent population

The risk of developing chronic pain is twice as high among people with a history of childhood maltreatment compared to those without these experiences. It is unclear, however, whether childhood maltreatment might lead to lower or higher perception of pain. In this paper, we investigate the association between childhood maltreatment and pain sensitivity. A sample of 187 Dutch adolescents (ages 16.7 to 20.5) was used from a population-based cohort at high-risk for emotional and behavioral problems screened at age 13. The Childhood Trauma Questionnaire short form (CTQ-SF) was completed to measure emotional, physical, sexual abuse, and emotional and physical neglect. To asses pain sensitivity, a thermal quantitative sensory testing procedure was used which measured pain from hot and cold stimuli. Individuals reporting childhood sexual abuse, emotional abuse or neglect and physical neglect could on average withstand hot and cold pain of 1.03 °C [0.13, 1.84] to 3.20 °C [0.62, 5.97] more across different types of abuse compared to those with no emotional abuse or (physical) neglect history. Physical abuse was not associated with pain sensitivity. The current findings suggest that childhood maltreatment might lead to habituation to painful stimuli as opposed to increased pain sensitivity.

Patient empowerment: a critical evaluation and prescription for a foundational definition

Introduction

The evolution of healthcare continues to display an incongruence between delivery and outcomes. Current healthcare paradigms for patient empowerment warrants analysis. A lacking operational application for and agree upon assessment of patient empowerment contributes to healthcare's incongruence. Interchangeable psychosocial concepts and specific patient contextual factors associated with health-related behavioral change have escaped an applicable definition of empowerment. The aim of this theoretical perspective review is to support a comprehensive and contextual understanding of patient empowerment that frames a definition for future consensus research.

Methods and mechanisms

A theoretical perspective review of patient empowerment including interchangeable concepts and patient contextual factors such as personal suffering and resilience; self-determined meaning and purpose; and autonomy, competence, and self-efficacy are critically analyzed. This analysis builds on adjacent concepts including therapeutic alliance, communication, motivation, and trust. The inclusion of specific patient contextual factors that relate to behavioral change elevate the need to reinforce coping and self-management skills as mechanism for patient empowerment. Practice gaps for those experiencing chronic disease, pain, and mental health disorders in rehabilitation setting are specific populations who benefit from healthcare providers unifying the variables associated with patient empowerment.

Results and discussion

The review of associated concepts synthesized an actionable definition of patient empowerment that serves as a foundation for future research. Behavior related changes occur through the evolution in one's identity, perceptions, and abilities. Interventions that inspire autonomy, competence, and relatedness with a renewed sense of purpose establish resilience and self-efficacy. The totality of this inspired self-determined plan of care establishes the mechanisms required for behavioral change and sustainable transformation. The cumulative experience becomes patient empowerment.

Catastrophizing as a Predictor for Pain Perception and Disability Among Patients Undergoing Spinal Cord Stimulation

Background and Objectives: The International Society for Modulation defines persistent spinal pain syndrome type 2 (PSPS-type 2), formerly known as failed back surgery syndrome, as a condition where patients continue to experience pain or develop new pain following spinal surgery intended to alleviate back or lower-limb discomfort. PSPS-type 2 is characterized by pain and significant disability, affecting quality of life. Spinal cord stimulation has proven effective in treating this syndrome, although the role of psychological factors, such as pain catastrophizing and central sensitization, remain unclear. This study seeks to examine the potential connection between psychosocial responses and both functionality and pain perception in patients with persistent spinal pain syndrome type 2 who have undergone spinal cord stimulation treatment. Materials and Methods: A single-site, cross-sectional study was conducted on individuals diagnosed with persistent spinal pain syndrome type 2 who were receiving spinal cord stimulation. Study participants were required to meet specific eligibility criteria and were assessed for disability, pain perception, fear of movement, pain catastrophizing, and central sensitization. The spinal cord stimulation procedure involved the placement of electrodes at vertebral levels T8-T11 for precise pain control, with a particular focus on targeting the dorsal root ganglion to alleviate chronic pain. Results: Thirty-seven patients with persistent spinal pain syndrome type 2 have undergone spinal cord stimulation treatment for 4.68 ± 5.25 years. Clinical assessments indicated a pain perception score of 5.6 ± 1.96, Central Sensitization Inventory score of 42.08 ± 18.39, disability score of 37.62 ± 16.13, fear of movement score of 33.11 ± 8.76, and pain catastrophizing score of 28.43 ± 13.14. Finally, pain catastrophizing was significantly associated with pain perception (β = 0.075 and p = 0.008) and disability (β = 0.90 and p < 0.01). Conclusions: Catastrophizing plays a crucial role in pain perception and disability among patients with persistent spinal pain syndrome type 2 receiving spinal cord stimulation. Integrating psychological interventions may improve clinical outcomes for these patients.

The effectiveness of psychologically-informed physiotherapy for people with neck pain and the mediating role of illness perceptions: a replicated single-case experimental design study

PURPOSE

(1) To evaluate the effectiveness of personalised psychologically-informed physiotherapy in people with neck pain; (2) To explore the mediating role of changes in illness perceptions.

METHOD

In this replicated single-case study, 14 patients with non-specific neck pain at risk for chronicity received a personalised intervention addressing unhelpful illness perceptions and dysfunctional movement behaviour, according to principles of cognitive functional therapy. Outcomes included the mediating role of illness perceptions on overall effect, function, pain intensity and self-efficacy. Linear mixed models were used to analyse the data.

RESULTS

Repeated measurements (14-20 per patient), including a 3-months follow-up, showed a gradual improvement during and/or after psychologically-informed physiotherapy for overall effect, function, pain and to a lesser extent self-efficacy. Changes in each of the illness perception dimensions showed a mediation effect on overall effect, function and pain. When combining the dimensions "consequences," "personal control," "identity," "concern" and "emotional response," changes in illness perceptions explained approximately 35% of the improvement in overall effect.

CONCLUSION

Addressing unhelpful illness perceptions appears valuable in the management of patients with chronic or recurrent non-specific neck pain. Intervention effects extended beyond the treatment period, indicating that patients' improved understanding of their health condition continued to have a positive impact.

Cross-cultural adaptation and validation of the Spanish version of the Prevent for Work questionnaire

Background

Musculoskeletal pain represents an increase in medical expenses due to disability and decreased quality of life among workers. Various biopsychosocial factors contribute to the development of persistent and disabling musculoskeletal pain. The Prevent for Work questionnaire (P4Wq) intended to analyze these factors. In this study, the original Italian version of the P4Wq was translated and culturally adapted to Spanish. Moreover, the psychometric properties were evaluated among Spanish workers with and without recent history of disabling spinal pain.

Methods

The first phase consisted of a forward-and-backward translation process and evaluating the face-validity of the questionnaire among 30 Spanish workers. The second phase involved 153 Spanish workers who completed the P4Wq, Oswestry Disability Index (ODI), and EQ-5D-5L questionnaires. Finally, 50 Spanish workers completed the P4Wq 2 weeks later to evaluate test-retest reliability and measurement error.

Results

Minor changes were made after the forward-and-backward translation process, which ensured that the Spanish versions was face-valid. The P4Wq demonstrated acceptable internal consistency for Spanish version (Cronbach's alpha: 0.91), a moderate negative association with the indicator of quality of life (ρ < -0.39; p = 0.001) and moderate positive association with the disability index (ρ > 0.46; p = 0.001). Furthermore, the P4Wq showed good to excellent item response stability (weighted kappa = 0.75-0.96) and good for the total score (ICC = 0.98).

Conclusion

The Spanish version of the P4Wq was face-valid and exhibited a similar structure as the original version. Additionally, good internal consistency and construct validity were found. This translated version of the questionnaire can therefore be considered acceptable for use by workers with and without history of disabling musculoskeletal pain.

The association between screened psychological risk for disability and appropriateness of orthopedic surgery in patients with musculoskeletal disorders - data from a Swedish RCT in primary care 2009-2011

INTRODUCTION

To understand, diagnose and treat patients with musculoskeletal disorders, psychological risk factors should be assessed, and the association between psychological risk for disability and appropriateness of orthopedic surgery should be investigated.

PURPOSE

To investigate the association between screened psychological risk for disability and appropriateness of orthopedic surgery, and to examine a physiotherapist's ability to assess risk for disability in patients referred for orthopedic consultation.

METHOD

Patients (n = 192) were assessed by a physiotherapist or an orthopedic surgeon to determine the need for surgery. The Pain Belief Screening Instrument (PBSI) was used to screen for psychological risk. The physiotherapist assessed psychological risk for disability based on yellow flags. Association between PBSI risk profile and appropriateness of orthopedic surgery was analyzed using logistic regression. Sensitivity and specificity of the physiotherapist's assessment of risk was calculated using a binary classification model.

RESULTS

Orthopedic surgery was 2.28 times more likely to be considered an appropriate intervention for patients with a high PBSI risk profile (95% CI 1.09;4.78). The physiotherapist's risk assessment correctly identified 88% of those at low risk (specificity) and 32% of those at high risk for disability (sensitivity).

CONCLUSION

The findings suggest that orthopedic surgery is likely to be considered appropriate for patients with a high PBSI risk profile. The high specificity of the physiotherapist's assessment implies good awareness of psychological factors. The low sensitivity suggests a need for using a screening tool such as the PBSI, to guide management decisions.Trial registration: Clinical Trials NCT02265172, retrospectively registered June 10, 2014.

Validation of the OPTIMAL-Confidence Questionnaire in Patients with Chronic Low Back Pain

Background/Objectives: Low back pain is one of the most prevalent pathologies. Several studies relate its chronification to certain psycho-emotional characteristics, such as self-efficacy or the patient's lack of confidence in the ability to move. Determine the reliability and validity of the OPTIMAL-confidence scale in people with chronic low back pain and describe the confidence in the movement capacity of this population. Methods: Design: A validation study was designed to evaluate the psychometric properties of the OPTIMAL-Confidence Questionnaire in a population with chronic low back pain. A descriptive observational study in a population with chronic low back pain and a healthy population was designed to describe the confidence in the movement capacity of the population with chronic low back pain.

SETTINGS

Health centers of primary care from a region of northwestern Spain.

PARTICIPANTS

The final sample was 122 patients diagnosed with chronic low back pain. The sampling was completed with 30 additional healthy subjects.

INSTRUMENTS

OPTIMAL-confidence questionnaire, Numerical Pain Rating Scale, Chronic Pain Self-efficacy Scale, and ad hoc questionnaire to collect socio-demographic and clinical variables. Results: Cronbach's alpha for the OPTIMAL-confidence questionnaire was 0.91. The association of OPTIMAL-confidence with the self-efficacy, pain intensity, and movement ability scales was moderate and significant (p < 0.001). Regarding the low back pain population, significant differences were observed in confidence levels according to age and the need for walking aids (p < 0.009). The OPTIMAL-confidence questionnaire also showed significant discrimination between the low back pain group and the no back pain group (p < 0.001). The confidence interval was 95%. Conclusions: The population with low back pain shows less confidence in their ability to perform movements, compared to the general population. OPTIMAL is an instrument that can discriminate between patients who present chronic low back pain and those who do not.

Evidence for central sensitization as classified by the central sensitization inventory in patients with pain and hypermobility

INTRODUCTION

Pain is a very common complaint among patients with hypermobile Ehlers-Danlos Syndrome (hEDS) and Hypermobility Spectrum Disorders (HSDs). Often challenging to treat, insights into the underpinnings of pain in this population have been fleeting. Central sensitization (CS) has been postulated as a potential etiological factor.

METHODS

In this retrospective study, 82 consecutive patients with hEDS/HSDs were reviewed. Demographic information and Central Sensitization Inventory (CSI) results were collected.

RESULTS

71 of 82 (86.5%) patients demonstrated CS. Scores ranged from 12 to 94 with a median of 56. Pain scores as measured on the numerical rating scale (NRS) ranged from 2 to 10 with a mean and median of 6.

CONCLUSION

A large percentage of patients with pain and a diagnosis of hEDS/HSDs demonstrated evidence of central sensitization as measured using the CSI. The CSI is simple to administer. The CSI may provide clinical insights that are key to successfully managing patients with hEDS/HSDs. Further research is needed to explore the ability to classify pain phenotypes in this patient population and the impact on precision medicine.

Pain prevalence rates and the mediating role of negative affect in adults referred to personality disorder treatment: A cross-sectional study

Personality disorders (PDs) are prevalent among individuals with chronic pain, but less is known about the prevalence of pain in the PD population. This study therefore sought to explore the prevalence of current or everyday pain among individuals referred to outpatient PD treatment, and further explore the mediating role of negative affect in the relationship between PD severity and current pain. Data was retrieved from the Norwegian Network for PDs' quality register which included 4361 participants. Pain was operationalized using the EQ-5D-3L "pain or discomfort" item and four SCL-90-R pain-related items ("pain bothersomeness"). Rates of self-reported pain were explored both pre and post treatment to determine the persistency of the pain-related symptoms. The role of negative affect in the relationship between PD severity and pain was investigated by linear regression analysis. A substantial burden of pain-related symptoms was demonstrated, as 71 % and 80 % reported moderate to extreme pain or discomfort and pain bothersomeness, respectively. Muscle soreness was the most common pain (59 %) followed by headache (48 %), low back pain (46 %), and heart or chest pain (34 %). Moderate to extreme pain or discomfort was persistent for 77 % of the participants who provided end of treatment data (mean treatment duration was 82 weeks). Negative affect mediated the relationship between PD severity and pain. To our knowledge, this is the first large-scale study on everyday pain in patients with PDs. The findings reveal that moderate to extreme pain is prevalent among persons with PDs and that this co-occurrence is driven by negative affect. PERSPECTIVE: Pain is a prevalent and potentially underrecognized symptom in personality disorders and persists until treatment termination for a large group of patients. This co-occurrence may be driven by a susceptibility to negative affect that is enhanced by personality disorder features.

When trauma bites back: a systematic review on direct orofacial macrotrauma and temporomandibular disorders

OBJECTIVES

Temporomandibular disorders (TMD) are musculoskeletal conditions with a multifactorial aetiology. The predictive role of direct orofacial macrotrauma in the development of TMD is considered controversial. This systematic review aims to elucidate the association between direct orofacial macrotrauma and TMD, and to identify potential factors involved in this relationship.

MATERIALS AND METHODS

A comprehensive literature search of PubMed, Embase, and Web of Science databases up to November 1, 2023, was performed in collaboration with a medical information specialist, identifying 2,047 unique studies. Of these, 139 met the inclusion criteria of this investigation.

RESULTS

Our synthesis of the literature indicates a consistent association between TMD and direct orofacial macrotrauma in adults, while this relationship appears less defined in paediatric and adolescent populations. The association shows robustness across various TMD diagnoses and trauma locations, remaining not only immediately following the direct orofacial macrotrauma but also after long time, despite other interventions. These outcomes could be due to the physical effect of the trauma, but they might be associated with the psychosocial effect of the trauma as well.

CONCLUSIONS

The evidence supports a robust, but complex, association between direct orofacial macrotrauma and TMD.

CLINICAL RELEVANCE

This finding underscores the importance of considering both physical and psychosocial sequelae of trauma in the clinical management of direct orofacial macrotrauma and TMD.

Pain can't be carved at the joints: defining function-based pain profiles and their relevance to chronic disease management in healthcare delivery design

BACKGROUND

Pain is a complex problem that is triaged, diagnosed, treated, and billed based on which body part is painful, almost without exception. While the "body part framework" guides the organization and treatment of individual patients' pain conditions, it remains unclear how to best conceptualize, study, and treat pain conditions at the population level. Here, we investigate (1) how the body part framework agrees with population-level, biologically derived pain profiles; (2) how do data-derived pain profiles interface with other symptom domains from a whole-body perspective; and (3) whether biologically derived pain profiles capture clinically salient differences in medical history.

METHODS

To understand how pain conditions might be best organized, we applied a carefully designed a multi-variate pattern-learning approach to a subset of the UK Biobank (n = 34,337), the largest publicly available set of real-world pain experience data to define common population-level profiles. We performed a series of post hoc analyses to validate that each pain profile reflects real-world, clinically relevant differences in patient function by probing associations of each profile across 137 medication categories, 1425 clinician-assigned ICD codes, and 757 expert-curated phenotypes.

RESULTS

We report four unique, biologically based pain profiles that cut across medical specialties: pain interference, depression, medical pain, and anxiety, each representing different facets of functional impairment. Importantly, these profiles do not specifically align with variables believed to be important to the standard pain evaluation, namely painful body part, pain intensity, sex, or BMI. Correlations with individual-level clinical histories reveal that our pain profiles are largely associated with clinical variables and treatments of modifiable, chronic diseases, rather than with specific body parts. Across profiles, notable differences include opioids being associated only with the pain interference profile, while antidepressants linked to the three complimentary profiles. We further provide evidence that our pain profiles offer valuable, additional insights into patients' wellbeing that are not captured by the body-part framework and make recommendations for how our pain profiles might sculpt the future design of healthcare delivery systems.

CONCLUSION

Overall, we provide evidence for a shift in pain medicine delivery systems from the conventional, body-part-based approach to one anchored in the pain experience and holistic profiles of patient function. This transition facilitates a more comprehensive management of chronic diseases, wherein pain treatment is integrated into broader health strategies. By focusing on holistic patient profiles, our approach not only addresses pain symptoms but also supports the management of underlying chronic conditions, thereby enhancing patient outcomes and improving quality of life. This model advocates for a seamless integration of pain management within the continuum of care for chronic diseases, emphasizing the importance of understanding and treating the interdependencies between chronic conditions and pain.

Geographical variation in high-impact chronic pain and psychological associations at the regional level: a multilevel analysis of a large-scale internet-based cross-sectional survey

Background

A geographical analysis could be employed to uncover social risk factors and interventions linked to chronic pain. Nonetheless, geographical variation in chronic pain across different regions of Japan have not been well explored. This study aims to investigate geographical variation in high-impact chronic pain (HICP), defined as moderate to severe chronic pain, and examine the associated psychological factors at the prefecture level.

Methods

A cross-sectional Internet-based survey involving 52,353 participants was conducted to assess chronic pain conditions, stress levels, mood states, educational levels, living status, regions, sleep duration, and exercise habits. A geographical analysis evaluated the prevalence of HICP at the prefecture level, and a multilevel analysis explored the risk factors for HICP at both individual and prefecture levels.

Results

The geographical analysis revealed that Fukushima exhibited the highest HICP prevalence (23.2%; z-score = 2.11), Oita ranked second (23.0%; z-score = 2.00), and Okinawa showed the lowest prevalence (14.9%; z-score = -2.45). Geographical maps of Japan indicated that regional-level subjective stress, negative emotions, and short sleep were associated with higher HICP prevalence. In contrast, positive emotions, such as vigor, were associated with lower prevalence. Multilevel analysis revealed a significant improvement in model fit after incorporating psychological factors at the prefecture level (p < 0.001) and identified significant associations between high subjective stress and low vigor at the prefecture level with HICP prevalence (p < 0.001).

Conclusion

There are regional differences in HICP prevalence, and at the prefecture level, subjective stress and vigor are associated with HICP.

How to personalise cognitive-behavioural therapy for chronic primary pain using network analysis: study protocol for a single-case experimental design with multiple baselines

INTRODUCTION

Cognitive-behavioural therapy (CBT) is an effective treatment for chronic primary pain (CPP), but effect sizes are small to moderate. Process orientation, personalisation, and data-driven clinical decision-making might address the heterogeneity among persons with CPP and are thus promising pathways to enhance the effectiveness of CBT for CPP. This study protocol describes one approach to personalise CBT for CPP using network analysis.

METHODS AND ANALYSIS

A single-case experimental design with multiple baselines will be combined with ecological momentary assessment (EMA). Feasibility and acceptance of the study procedure will be demonstrated on a sample of n=12 adults with CPP in an outpatient clinic. In phase A, participants complete 21 days of EMA, followed by the standard diagnostic phase of routine clinical care (phase B). Person-specific, process-based networks are estimated based on EMA data. Treatment targets are selected using mean ratings, strength and out-strength centrality. After a second, randomised baseline (phase A'), participants will receive 1 out of 10 CBT interventions, selected by an algorithm matching targets to interventions, in up to 10 sessions (phase C). Finally, another EMA phase of 21 days will be completed to estimate a post-therapy network. Tau-U and Hedges' g are used to indicate individual treatment effects. Additionally, conventional pain disability measures (Pain Disability Index and the adapted Quebec Back Pain Disability Scale) are assessed prior, post, and 3 months after phase C.

ETHICS AND DISSEMINATION

Ethical considerations were made with regard to the assessment-induced burden on the participants. This proof-of-concept study may guide future studies aiming at personalisation of CBT for CPP as it outlines methodological decisions that need to be considered step by step. The project was approved by the local ethics committee of the psychology department of University Kaiserslautern-Landau (#LEK-457). Participants gave their written informed consent prior to any data assessment and app installation. The results of the project will be published, presented at congresses, and relevant data will be made openly accessible via the Open Science Framework (OSF).

TRIAL REGISTRATION NUMBER

NCT06179784.

Is it time to agree upon a standardised approach to the assessment of contributing factors and impacts of adolescent pelvic pain?

BACKGROUND

A biopsychosocial approach to the understanding of pelvic pain is increasingly acknowledged. However, there is a lack of standardised instruments - or their use - to assess risk factors and their impact on pelvic pain in both clinical and research settings. This review aims to identify validated tools used to assess known contributory factors to pelvic pain, as well as the validated tools to measure the impact of pelvic pain in adolescents and young adults, in order to provide a framework for future standardised, adolescent specific assessment and outcome tools.

METHODS

Literature searches were performed in MEDLINE, PsycInfo and PubMed. Search terms included pelvic pain, dysmenorrhoea, endometriosis, adolescent, pain measurement, quality of life, sleep, mental health, coping strategies and traumatic experience.

RESULTS

We found validated instruments to assess adverse childhood experiences and coping strategies, both known contributing factors to pelvic pain. The impact of pain was measured through validated tools for health-related quality of life, mental health and sleep.

CONCLUSIONS

Pelvic pain evaluation in adolescents should include a multi-factorial assessment of contributing factors, such as childhood adversity and coping strategies, and impacts of pelvic pain on quality of life, mental health and sleep, using validated instruments in this age group. Future research should focus on the development of consensus amongst researchers as well as input from young women to establish a standardised international approach to clinical trials involving the investigation and reporting of pelvic pain in adolescents. This would facilitate comparison between studies and contribute to improved quality of care delivered to patients.

Effects of hypermobile Ehlers-Danlos syndrome patients on the workflow and professional satisfaction of genetic counselors

The Ehlers-Danlos syndromes (EDS), a group of uncommon connective tissue disorders, are, paradoxically, an increasingly common referral to genetics specialists. Of the 13 types of EDS, the most common is hypermobile EDS (hEDS), which lacks a known genetic etiology and for which diagnosis is achieved via a robust set of clinical criteria. While previous investigations have characterized many clinical aspects of EDS as a syndrome and patients' lived experiences, a gap in the literature exists regarding clinicians' experience caring for these individuals. This study sought to understand the effects of hEDS patient referrals from genetic counselors' perspectives. To capture these novel views and values, we conducted semi-structured interviews with 15 participants who were members of the National Society of Genetic Counselors (NSGC) and had experience working with the hEDS patient population. Interview questions explored the frequency of hEDS referrals in their clinic, investigated their roles and responsibilities as genetic counselors when working with this population, analyzed their workflow for this indication, assessed the impacts on their professional satisfaction, and explored potential options for improving workflow and care for the hEDS patient population. Reflexive thematic analysis yielded four themes: (1) Referrals for hEDS have generally increased over time and many institutions have implemented new policies to control this influx, (2) genetic counselors' primary roles include education and addressing psychosocial matters for this population, (3) genetic counselors feel both rewarded and challenged by these referrals, and (4) genetic counselors call for more education and training on hEDS for all healthcare specialties. Our findings provide a better understanding of the goals of the hEDS patient referrals to genetics specialists and the opportunities and challenges those referrals present. Genetic counselors have specific training and skills in psychosocial counseling and communication, in some ways making them ideal care providers for this population. However, they are simultaneously a scarce resource and the complex medical issues presented by many patients with hEDS make multidisciplinary management essential. We conclude with potential avenues for improving interactions with this population.

Is chronic pain caused by central sensitization? A review and critical point of view

Chronic pain causes disability and loss of health worldwide. Yet, a mechanistic explanation for it is still missing. Frequently, neural phenomena, and among them, Central Sensitization (CS), is presented as causing chronic pain. This narrative review explores the evidence substantiating the relationship between CS and chronic pain: four expert researchers were divided in two independent teams that reviewed the available evidence. Three criteria were established for a study to demonstrate a causal relationship: (1) confirm presence of CS, (2) study chronic pain, and (3) test sufficiency or necessity of CS over chronic pain symptoms. No study met those criteria, failing to demonstrate that CS can cause chronic pain. Also, no evidence reporting the occurrence of CS in humans was found. Worryingly, pain assessments are often confounded with CS measures in the literature, omitting that the latter is a neurophysiological and not a perceptual phenomenon. Future research should avoid this misconception to directly interrogate what is the causal contribution of CS to chronic pain to better comprehend this problematic condition.

Sleep and circadian rhythm disturbances as risk and progression factors for multiple chronic overlapping pain conditions: a protocol for a longitudinal study

Introduction

Chronic overlapping pain conditions (COPCs), such as chronic low back pain (cLBP) and fibromyalgia, frequently cooccur and incur substantial healthcare costs. However, to date, much focus has been placed on individual anatomically based chronic pain conditions, whereas little is known about the mechanisms underlying progression to multiple (more than 1) COPCs. This study aims to address the gap by investigating the role of common and modifiable risk factors, specifically sleep and circadian rhythm disturbances, in the development of multiple COPCs.

Methods

The study will enroll 300 participants with cLBP, including 200 with cLBP only and 100 with cLBP plus other COPCs (ie, fibromyalgia, temporomandibular disorders, irritable bowel syndrome, and chronic headaches) and follow them up for 12 months. Sleep and circadian rhythms will be assessed using wireless sleep electroencephalography, 24-hour evaluation of the rhythm of urinary 6-sulfatoxymelatonin, actigraphy, and sleep diaries. Pain amplification using quantitative sensory testing, psychological distress using validated self-report measures, and the number of pain sites using a pain body map will also be assessed.

Perspectives

This research aims to (1) comprehensively characterize sleep/circadian disturbances in individuals with single and multiple COPCs using multimodal in-home assessments; (2) examine the associations between sleep/circadian disturbances, changes in pain amplification, and psychological distress; and (3) investigate the relationship among these factors and the progression in the number of pain sites, a proxy for multiple COPCs. The findings will provide insights into the mechanisms leading to multiple COPCs, potentially informing treatment and prevention strategies for these complex conditions.

Evaluation of the Acceptability and Feasibility of Stress Mitigation Education and Support Delivered via Telehealth for People After Road Traffic Musculoskeletal/Orthopedic Injury

PURPOSE

To evaluate the acceptability and feasibility of a consumer co-designed telehealth intervention which aimed to reduce claimant distress by providing pain management strategies, informational and social support to people who had made a compensation claim following road traffic musculoskeletal injury.

METHODS

Eleven claimant participants who were at risk of a poor outcome completed the intervention in a one-on-one setting with the same clinician delivering the program across all sessions.They were interviewed about their experience (acceptability and feasibility including the use of telehealth). Clinicians who delivered the intervention also completed an anonymous feedback survey exploring their experiences delivering the intervention. Interviews were transcribed verbatim and thematic analysis was conducted.

RESULTS

There were four themes which broadly related to the acceptability and feasibility of the intervention as well as the perceived benefits: (1) knowledge is power, (2) healing with social connection, (3) further along than I would have been, and (4) telehealth was acceptable and feasible.

CONCLUSION

The delivery of a co-designed telehealth-delivered stress mitigation intervention to support people with a road traffic musculoskeletal injury was feasible to deliver and acceptable to people who were at risk of a poor outcome. Further research to evaluate the efficacy of the intervention on outcomes such as pain, self-efficacy, and claims costs are needed.

Do Acute Illness Perceptions Moderate the Association of Pre-Collision Welfare Benefits and Later Neck Pain or Disability Following Whiplash Trauma? A Prospective Multicentre Cohort Study

Objectives: Whiplash trauma is a worldwide significant public health issue, with post-collision chronic pain and physical and mental disability; the prevalence of whiplash trauma in the Japanese general population is estimated at 1.2% and in the Danish general population the whiplash condition has been reported to be 2.9%. Pre-collision welfare benefits and illness perceptions have been found to predict poor recovery after whiplash trauma. In this study, we examined whether illness perceptions measured shortly post-collision moderated the effect of welfare benefits five years before the collision on neck pain and neck-related disability one-year post-collision. Methods: Patients consulting emergency rooms or general practices with neck pain after acute whiplash trauma were invited to complete questionnaires during the week after the collision and at three and 12-months post-collision. Further, we obtained register data on the number of weeks on three types of welfare benefits (sick leave benefits, unemployment benefits, and social assistance benefits) for a five-year period before the collision. Multiple logistic regression was applied. Results: 740 patients were included. We did not find a significant moderating effect of illness perceptions on the association between pre-collision welfare benefits and chronic neck pain and related disability. However, there was a trend towards illness perceptions at baseline and at the three-month follow-up having a moderating effect on the relationship between long-term sick leave and neck pain one year after the whiplash collision. Conclusions: Regarding long-term sick leave, we might have overlooked a substantial moderating effect due to methodological matters and recommend a replication of this study on a larger sample, also focusing on other recovery outcomes.

Using the Socioecological Model to Understand Medical Staff and Older Adult Patients' Experience with Chronic Pain: A Qualitative Study in an Underserved Community Setting

Purpose

Chronic pain is highly prevalent and disabling for older adults, particularly those from underserved communities. However, there is an absence of research on how contextual (eg, community/societal) factors interact with pain for these patients. Informed by the socio-ecological model, this study aimed to elucidate the individual, interpersonal, community, and societal factors associated with chronic pain from the perceptions of older adult patients and medical staff in a community clinic.

Patients and Methods

In this qualitative study, we conducted four focus groups and two interviews with medical staff (n=25) and three focus groups and seven individual interviews with older adult patients with chronic pain (n=18). Participants were recruited using purposive sampling from an ethnically and economically diverse primary care clinic in the greater Boston community. We transcribed assessments and thematically analyzed data using a hybrid deductive-inductive approach.

Results

At the individual level, we identified three themes: (1) older adults with complex care needs, (2) impact of pain (including on physical, emotional, work, and identity functioning), and (3) coping with pain. At the interpersonal level, complex relationships with (1) social supports and (2) medical staff emerged as themes. The need for (1) resources and (2) culturally informed care was identified at the community level, and socioeconomic status impacting the availability of resources for managing chronic pain emerged for the societal domain.

Conclusion

Findings underscore the intersection of factors contributing to the experience of pain among older adults from underserved communities. Our findings highlight the need to develop and implement treatments that fully address the experience of older adults with chronic pain at the individual, interpersonal, community, and societal levels.

How initial perceptions of the effectiveness of mind and body complementary and integrative health therapies influence long-term adherence in a pragmatic trial

OBJECTIVE

Beliefs and perceptions about pain intervention effectiveness when initiating a therapy may influence long-term engagement. This study examines how early perceived effectiveness of complementary and integrative health therapies impacts long-term engagement in a pragmatic trial context.

PARTICIPANTS

Veterans with chronic musculoskeletal pain participating in a pragmatic trial of provider-delivered complementary and integrative health therapies (acupuncture, chiropractic care, or massage therapy) used alone compared to combining those therapies with self-care therapies (yoga, Tai Chi/Qigong, or meditation). This analysis focuses on 1713 participants using self-care therapies at baseline.

SETTING

18 Veterans Healthcare Administration Medical Facilities.

DESIGN

Prospective cohort study.

METHODS

Predictors of total self-care complementary and integrative health therapy sessions over a 6-month assessment period were assessed using linear regression to determine how strongly perceptions of initial therapy effectiveness was associated with total utilization. Perception of initial therapy effectiveness was assessed at study entry across four domains (pain, mental health, fatigue, and general well-being).

RESULTS

In total, 56% (1032/1713) of Veterans reported a positive perceived effectiveness of their recent complementary and integrative health therapy use at study initiation. Older individuals and those using meditation were more likely to report early positive perceptions. Mean number of therapy sessions over the 6-month study was 11 (range 1 to 168). Early positive perceptions had a small effect on overall use, increasing mean sessions by 2.5 (1.3 to 3.6). Other factors such as recent physical therapy use and distance to primary care explained more variation in total utilization.

CONCLUSIONS

Pragmatic pain trials should examine factors associated with engagement across assigned treatment protocols, especially if any of the treatment protocols being tested are sensitive to long-term engagement.

Psychological, physical and complementary therapies for the management of neuropathic pain

This chapter aims to explain and evaluate the evidence for psychological, physical and complementary therapies as part of a holistic plan for managing neuropathic pain. Psychological therapies refer to interventions targeting mental health, while physical therapies refer to interventions designed to target movement and functional ability, and complementary therapies are those that attempt to target key mechanisms of change to alter brain and body functioning, or thought processes related to the experience of pain. Each therapeutic modality is discussed to narratively report on the evidence and provide implications for clinicians. Where evidence was unavailable for neuropathic pain populations, evidence from chronic pain populations more broadly was considered. Although promising, there is a lack of high-quality evidence investigating the benefits and safety of psychological, physical and complementary therapies for the management of neuropathic pain. The low certainty evidence and lack of evidence across different neuropathic pain conditions impacts the ability to make recommendations for clinical practice. However, there are several potential areas for future research. Psychological therapies that focus on the underlying mechanisms related to emotion regulation may improve mood and pain, while cognitive and behavioural based approaches may improve psychological comorbidities such as anxiety and depression. Physical therapies involving physical activity and exercise, education, and graded motor imagery may improve functioning and reduce pain. Finally, complementary therapies including electroencephalography neurofeedback, acupuncture, virtual reality, hypnosis and transcutaneous electrical nerve stimulation may provide promising reductions in pain. There is a clear need for further high-quality trials to evaluate the benefits and safety of psychological, physical and complementary therapies to guide the management of neuropathic pain.