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Marbil MG, Ware AL, Galarneau JM, Minich NM, Hershey AD, Orr SL, Defta DM, Taylor HG, Bigler ED, Cohen DM, Mihalov LK, Bacevice A, Bangert BA, Yeates KO. Longitudinal trajectories of posttraumatic headache after pediatric mild traumatic brain injury. Cephalalgia 2023; 43:3331024231161740. [PMID: 37177818 DOI: 10.1177/03331024231161740] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/15/2023]
Abstract
OBJECTIVE This prospective, longitudinal cohort study examined the trajectory, classification, and features of posttraumatic headache after pediatric mild traumatic brain injury. METHODS Children (N = 213; ages 8.00 to 16.99 years) were recruited from two pediatric emergency departments <24 hours of sustaining a mild traumatic brain injury or mild orthopedic injury. At 10 days, three months, and six months postinjury, parents completed a standardized questionnaire that was used to classify premorbid and posttraumatic headache as migraine, tension-type headache, or not otherwise classified. Multilevel mixed effects models were used to examine posttraumatic headache rate, severity, frequency, and duration in relation to group, time postinjury, and premorbid headache, controlling for age, sex, and site. RESULTS PTH risk was greater after mild traumatic brain injury than mild orthopedic injury at 10 days (odds ratio = 197.41, p < .001) and three months postinjury (odds ratio = 3.50, p = .030), especially in children without premorbid headache. Posttraumatic headache was more frequent after mild traumatic brain injury than mild orthopedic injury, β (95% confidence interval) = 0.80 (0.05, 1.55). Groups did not differ in other examined headache features and classification any time postinjury. CONCLUSIONS Posttraumatic headache risk increases after mild traumatic brain injury relative to mild orthopedic injury for approximately three months postinjury, but is not clearly associated with a distinct phenotype.
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Affiliation(s)
- Mica Gabrielle Marbil
- Department of Psychology, University of Calgary, Calgary, AB, Canada
- Alberta Children's Hospital Research Institute, University of Calgary, Calgary, AB, Canada
| | - Ashley L Ware
- Department of Psychology, University of Calgary, Calgary, AB, Canada
- Alberta Children's Hospital Research Institute, University of Calgary, Calgary, AB, Canada
- Hotchkiss Brain Institute, University of Calgary, Calgary, AB, Canada
- Department of Neurology, University of Utah, Salt Lake City, UT, USA
- Department of Psychology, Georgia State University, Atlanta, GA, USA
| | | | - Nori Mercuri Minich
- Department of Pediatrics, Case Western Reserve University, Cleveland, OH, USA
- Rainbow Babies & Children's Hospital, University Hospitals Cleveland Medical Center, Cleveland, OH, USA
| | - Andrew D Hershey
- Cincinnati Children's Hospital Medical Center, University of Cincinnati College of Medicine, Cincinnati, OH, USA
| | - Serena L Orr
- Alberta Children's Hospital Research Institute, University of Calgary, Calgary, AB, Canada
- Hotchkiss Brain Institute, University of Calgary, Calgary, AB, Canada
- Department of Pediatrics, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada
| | - Dana M Defta
- Department of Neurological Surgery, University Hospitals Cleveland Medical Center, Cleveland, OH, USA
| | - H Gerry Taylor
- Abigail Wexner Research Institute at Nationwide Children's Hospital, Columbus, OH, USA
- Department of Pediatrics, The Ohio State University, Columbus, OH, USA
| | - Erin D Bigler
- Department of Neurology, University of Utah, Salt Lake City, UT, USA
- Department of Psychology, Brigham Young University, Provo, UT, USA
| | - Daniel M Cohen
- Department of Pediatrics, The Ohio State University, Columbus, OH, USA
- Division of Emergency Medicine, Nationwide Children's Hospital, Columbus, OH, USA
| | - Leslie K Mihalov
- Abigail Wexner Research Institute at Nationwide Children's Hospital, Columbus, OH, USA
- Department of Pediatrics, The Ohio State University, Columbus, OH, USA
| | - Ann Bacevice
- Department of Pediatrics, Case Western Reserve University, Cleveland, OH, USA
| | - Barbara A Bangert
- Department of Pediatrics, Case Western Reserve University, Cleveland, OH, USA
| | - Keith Owen Yeates
- Department of Psychology, University of Calgary, Calgary, AB, Canada
- Alberta Children's Hospital Research Institute, University of Calgary, Calgary, AB, Canada
- Hotchkiss Brain Institute, University of Calgary, Calgary, AB, Canada
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Dondi A, Biserni GB, Scarpini S, Fetta A, Moscano F, Corsini I, Borelli G, Cordelli DM, Lanari M. Post-Traumatic Headache in Children after Minor Head Trauma: Incidence, Phenotypes, and Risk Factors. CHILDREN 2023; 10:children10030534. [PMID: 36980092 PMCID: PMC10047862 DOI: 10.3390/children10030534] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/19/2023] [Revised: 03/06/2023] [Accepted: 03/08/2023] [Indexed: 03/12/2023]
Abstract
Minor head trauma (MHT) is very frequent in children and post-traumatic headache (PTH) is one of its most common complications; however, its management is still a challenge. We aimed to assess the incidence and clinical characteristics of, and risk factors for, PTH among children referred to our pediatric emergency department (PED) for MHT. A total of 193 patients aged 3–14 years evaluated for MTH were enrolled and followed up for 6 months through phone calls and/or visits. PTH occurred in 25/193 patients (13%). PTH prevalence was significantly higher in school-aged (≥6 years) than in pre-school-aged children (21.6% vs. 4.9%, respectively, p < 0.009). Females were found to be more affected. The median time of onset was 4.6 days after MHT; resolution occurred in a median of 7 weeks. In 83.3% of patients, PTH subsided in <3 months, while in 16.7% it persisted longer. A total of 25% of children exhibited the migraine and 75% the tension-type variant. Our analysis indicates the presence of headache upon arrival in PED, isolated or associated with nausea and dizziness, as a factor predisposing the patient to the development of PTH. Our findings could be useful to identify children at risk for PTH for specific follow-up, family counseling, and treatment.
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Affiliation(s)
- Arianna Dondi
- Pediatric Emergency Unit, IRCCS Azienda Ospedaliero-Universitaria di Bologna, 40138 Bologna, Italy
| | | | - Sara Scarpini
- Specialty School of Pediatrics, Alma Mater Studiorum, University of Bologna, 40126 Bologna, Italy
- Correspondence:
| | - Anna Fetta
- IRCCS Istituto delle Scienze Neurologiche di Bologna, UOC Neuropsichiatria dell’età Pediatrica, 40139 Bologna, Italy
- Department of Medical and Surgical Sciences (DIMEC), S. Orsola Hospital, University of Bologna, 40126 Bologna, Italy
| | - Filomena Moscano
- IRCCS Istituto delle Scienze Neurologiche di Bologna, UOC Neuropsichiatria dell’età Pediatrica, 40139 Bologna, Italy
| | - Ilaria Corsini
- Pediatric Emergency Unit, IRCCS Azienda Ospedaliero-Universitaria di Bologna, 40138 Bologna, Italy
| | - Greta Borelli
- Department of Nephrology, Dialysis and Transplantation, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Alma Mater Studiorum, University of Bolologna, 40126 Bologna, Italy
| | - Duccio Maria Cordelli
- IRCCS Istituto delle Scienze Neurologiche di Bologna, UOC Neuropsichiatria dell’età Pediatrica, 40139 Bologna, Italy
- Department of Medical and Surgical Sciences (DIMEC), S. Orsola Hospital, University of Bologna, 40126 Bologna, Italy
| | - Marcello Lanari
- Pediatric Emergency Unit, IRCCS Azienda Ospedaliero-Universitaria di Bologna, 40138 Bologna, Italy
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Tanaka M, Zhang Y. Preclinical Studies of Posttraumatic Headache and the Potential Therapeutics. Cells 2022; 12:cells12010155. [PMID: 36611947 PMCID: PMC9818317 DOI: 10.3390/cells12010155] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2022] [Revised: 12/13/2022] [Accepted: 12/28/2022] [Indexed: 12/31/2022] Open
Abstract
Posttraumatic headache (PTH) attributed to traumatic brain injury (TBI) is a secondary headache developed within 7 days after head injury, and in a substantial number of patients PTH becomes chronic and lasts for more than 3 months. Current medications are almost entirely relied on the treatment of primary headache such as migraine, due to its migraine-like phenotype and the limited understanding on the PTH pathogenic mechanisms. To this end, increasing preclinical studies have been conducted in the last decade. We focus in this review on the trigeminovascular system from the animal studies since it provides the primary nociceptive sensory afferents innervating the head and face region, and the pathological changes in the trigeminal pathway are thought to play a key role in the development of PTH. In addition to the pathologies, PTH-like behaviors induced by TBI and further exacerbated by nitroglycerin, a general headache inducer through vasodilation are reviewed. We will overview the current pharmacotherapies including calcitonin gene-related peptide (CGRP) monoclonal antibody and sumatriptan in the PTH animal models. Given that modulation of the endocannabinoid (eCB) system has been well-documented in the treatment of migraine and TBI, the therapeutic potential of eCB in PTH will also be discussed.
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Maki K, Doan Q, Sih K, Stillwell K, Chun A, Meckler G. A randomized controlled pilot study of intranasal lidocaine in acute management of paediatric migraine and migraine-like headache. Paediatr Child Health 2022; 27:340-345. [DOI: 10.1093/pch/pxac054] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2021] [Accepted: 05/05/2022] [Indexed: 11/14/2022] Open
Abstract
Abstract
Objectives
This study was aimed to determine the sample size required to conduct an efficacy randomized controlled trial (RCT) to evaluate superiority of intranasal (IN) lidocaine to placebo as an analgesic option for children presenting to the paediatric emergency department (PED) with migraine or posttraumatic headache with migraine features and to evaluate study protocol feasibility.
Study Design
This study is a double-blind RCT of children aged 7 to 16 years at a single-centre PED. Thirty-two participants were randomized to receive either IN 2% lidocaine or 0.9% sodium chloride. The primary outcome measure was the proportion of subjects with a Verbal Numeric Rating Scale pain score of <4 at 30 and 60 minutes post-IN therapy. Primary outcome data were analyzed using a test of differences between proportions. Secondary objectives included assessing the feasibility of our study protocol by evaluating recruitment rates, adverse drug events, and PED length of stay (LOS).
Results
Six of 17 participants in the lidocaine group and 2 of 15 in the placebo group were treated successfully. Using these proportions with 95% confidence intervals and 80% power, the sample size required to find a significant difference between proportions would be 67 participants per arm. Our enrolment rate was 55% and there were no serious adverse drug events. The median PED LOS was similar between groups.
Conclusion
We determined the sample size required to conduct a definitive RCT to evaluate the superiority of IN lidocaine to placebo and found the study protocol is feasible but identified important considerations in PED migraine trial design.
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Affiliation(s)
- Kate Maki
- Department of Pediatrics, University of British Columbia , Vancouver, British Columbia , Canada
| | - Quynh Doan
- Department of Pediatrics, University of British Columbia , Vancouver, British Columbia , Canada
- BC Children’s Hospital Research Institute , Vancouver, British Columbia , Canada
| | - Kendra Sih
- Department of Pediatrics, University of British Columbia , Vancouver, British Columbia , Canada
| | - Karly Stillwell
- BC Children’s Hospital Research Institute , Vancouver, British Columbia , Canada
| | - Alaina Chun
- BC Children’s Hospital Research Institute , Vancouver, British Columbia , Canada
| | - Garth Meckler
- Department of Pediatrics, University of British Columbia , Vancouver, British Columbia , Canada
- BC Children’s Hospital Research Institute , Vancouver, British Columbia , Canada
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Navratilova E, Oyarzo J, Anderson T, Broide RS, Subramaniam SR, Vazquez-Cintron EJ, Brin MF, Schwedt TJ, Dodick DW, Porreca F. Preclinical assessment of onabotulinumtoxinA for the treatment of mild traumatic brain injury-related acute and persistent post-traumatic headache. Cephalalgia 2022; 42:1194-1206. [PMID: 35546268 PMCID: PMC9535972 DOI: 10.1177/03331024221099841] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
Objective Investigation of onabotulinumtoxinA in a murine model of acute and persistent post-traumatic headache. Methods Mild traumatic brain injury was induced with a weight drop method. Periorbital and hindpaw cutaneous allodynia were measured for 14 days. Mice were then exposed to bright light stress and allodynia was reassessed. OnabotulinumtoxinA (0.5 U) was injected subcutaneously over the cranial sutures at different post-injury time points. Results After milt traumatic brain injury, mice exhibited periorbital and hindpaw allodynia that lasted for approximately 14 days. Allodynia could be reinstated on days 14–67 by exposure to stress only in previously injured mice. OnabotulinumtoxinA administration at 2 h after mild traumatic brain injury fully blocked both transient acute and stress-induced allodynia up to day 67. When administered 72 h post-mild traumatic brain injury, onabotulinumtoxinA reversed acute allodynia, but only partially prevented stress-induced allodynia. OnabotulinumtoxinA administration at day 12, when initial allodynia was largely resolved, produced incomplete and transient prevention of stress-induced allodynia. The degree of acute allodynia correlated positively with subsequent stress-induced allodynia. Conclusion Mild traumatic brain injury induced transient headache-like pain followed by long lasting sensitization and persistent vulnerability to a normally innocuous stress stimulus, respectively modeling acute and persistent post-traumatic headache.. Administration of onabotulinumtoxinA following the resolution of acute post-traumatic headache diminished persistent post-traumatic headache but the effects were transient, suggesting that underlying persistent mild traumatic brain injury-induced maladaptations were not reversed. In contrast, early onabotulinumtoxinA administration fully blocked both acute post-traumatic headache as well as the transition to persistent post-traumatic headache suggesting prevention of neural adaptations that promote vulnerability to headache-like pain. Additionally, the degree of acute post-traumatic headache was predictive of risk of persistent post-traumatic headache.
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Affiliation(s)
- Edita Navratilova
- Department of Pharmacology, Arizona Health Sciences Center, University of Arizona, Tucson, AZ, USA
| | | | - Trent Anderson
- Department of Basic Medical Sciences, University of Arizona College of Medicine, Phoenix, AZ, USA
| | | | | | | | - Mitchell F Brin
- Allergan Aesthetics, an AbbVie Company, USA.,Department of Neurology, University of California, Irvine, CA, USA
| | | | | | - Frank Porreca
- Department of Pharmacology, Arizona Health Sciences Center, University of Arizona, Tucson, AZ, USA.,Mayo Clinic, Scottsdale, AZ, USA
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Patterson Gentile C, Shah R, Irwin SL, Greene K, Szperka CL. Acute and chronic management of posttraumatic headache in children: A systematic review. Headache 2021; 61:1475-1492. [PMID: 34862612 DOI: 10.1111/head.14236] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2021] [Revised: 08/19/2021] [Accepted: 09/20/2021] [Indexed: 12/17/2022]
Abstract
OBJECTIVES The goal of this paper is to provide a compilation of the evidence for the treatment of posttraumatic headache (PTH) in the pediatric population. Headache features and timing of therapy were considered. BACKGROUND Headache is the most common symptom following mild traumatic brain injury (mTBI), affecting more than 80% of children and adolescents. It is unclear whether treatment for PTH should be tailored based on headache characteristics, particularly the presence of migraine features, and/or chronicity of the headache. METHODS Systematic literature searches of PubMed, Embase, Scopus, and Cochrane databases (1985-2021, limited to English) were performed, and key characteristics of included studies were entered into RedCAP® (Prospero ID CRD42020198703). Articles and conference abstracts that described randomized controlled trials (RCTs), cohort studies, retrospective analyses, and case series were included. Participants included youth under 18 years of age with acute (<3 months) and persistent (≥3 months) PTH. Studies that commented on headache improvement in response to therapy were included. RESULTS Twenty-seven unique studies met criteria for inclusion describing abortive pharmacologic therapies (9), preventative pharmacotherapies (5), neuromodulation (1), procedures (5), physical therapy and exercise (6), and behavioral therapy (2). Five RCTs were identified. Studies that focused on abortive pharmacotherapies were completed in the first 2 weeks post-mTBI, whereas other treatment modalities focused on outcomes 1 month to over 1-year post-injury. Few studies reported on migrainous features (7), personal history of migraine (7), or family history of migraine (3). CONCLUSIONS There is limited evidence on the timing and types of therapies that are effective for treating PTH in the pediatric population. Prospective studies that account for headache characteristics and thoughtfully address the timing of therapies and outcome measurement are needed.
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Affiliation(s)
- Carlyn Patterson Gentile
- Pediatric Headache Program, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA.,Department of Neurology, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Ryan Shah
- School of Arts and Sciences, University of Richmond, Richmond, Virginia, USA
| | - Samantha L Irwin
- UCSF Child & Adolescent Headache Program, San Francisco, California, USA
| | - Kaitlin Greene
- Doernbecher Children's Hospital Child and Adolescent Headache Program, Division of Pediatric Neurology, Oregon Health & Science University, Portland, Oregon, USA
| | - Christina L Szperka
- Pediatric Headache Program, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA.,Department of Neurology, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania, USA
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7
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Clinical profile and short-term course of post-traumatic headache in children with mild traumatic brain injury: a prospective cohort study. Childs Nerv Syst 2021; 37:1943-1948. [PMID: 33404708 DOI: 10.1007/s00381-020-05032-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/13/2020] [Accepted: 12/29/2020] [Indexed: 10/22/2022]
Abstract
OBJECTIVE To study the clinical profile and factors associated with post-traumatic headache (PTH) in children with mild traumatic brain injury (mTBI) attending an urban public hospital. METHODS We enrolled 130 consecutive children aged 6-12 years with mTBI (as per the International Classification of Headache Disorders-III criteria), and followed them up for 7 days. Those who developed PTH were further followed up monthly for 3 months. RESULTS Thirty (23.1%) children developed PTH; 25 (19.2%) children had acute PTH (duration 7 days to 3 months) and the remaining 5 (3.8%) developed persistent PTH (> 3 months). Majority (50%) had bilateral headache and squeezing quality (50%). Forty percent of those with PTH met the criteria for migraine. Obesity (P = 0.84), female gender (P = 0.26), family history of headache (P = 0.93), and prior history of concussion (P = 0.70) were not associated with risk of PTH. Children who developed PTH had higher rate of nausea (RR (95% CI) = 2.42 (1.06, 5.5); P = 0.03) and vomiting (RR (95% CI) = 3.76 (1.64, 8.5); P = 0.001) after mTBI. Headache resolved within 1 month in 63.3% of children. CONCLUSION PTH was found to be common after mTBI in children. Protocolized follow-up and directed history taking for PTH in all children with mTBI, who are frequently discharge from the emergency department after first aid, will lead to appropriate diagnosis and management of this problem.
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Lambru G, Benemei S, Andreou AP, Luciani M, Serafini G, van den Brink AM, Martelletti P. Position Paper on Post-Traumatic Headache: The Relationship Between Head Trauma, Stress Disorder, and Migraine. Pain Ther 2021; 10:1-13. [PMID: 33247827 PMCID: PMC8119555 DOI: 10.1007/s40122-020-00220-1] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2020] [Accepted: 11/16/2020] [Indexed: 11/26/2022] Open
Abstract
Traumatic brain injury (mTBI) is a major public health concern, with mild TBI (mTBI) constituting the vast majority of the injuries. Post-traumatic headache (PTH) is one of the most frequent symptoms that follow a mTBI, occurring in isolation with a tension-type or migraine phenotype, or more often as part of a complex neurobehavioural array of symptoms. The existence of PTH as a separate entity from the primary headaches is still a matter of debate. Classification issues and a lack of methodologically robust epidemiological and clinical studies have made it difficult to elucidate the mechanisms underlying acute and even more persistent PTH (PPTH). Furthermore, psychiatric comorbidities such as post-traumatic stress disorder (PTSD), previous history of migraine, and legal issues often reported by PPTH patients have complicated the understanding of this condition, hence treatment approaches for PTH remain problematic. Recent findings from structural and functional neuroimaging studies have attempted to describe the brain architecture of PPTH, suggesting the involvement of different networks compared to migraine. It also seems that calcitonin gene-related peptide (CGRP) levels are not particularly raised in PPTH, although CGRP monoclonal antibodies have obtained positive initial open-label evidence of efficacy in PPTH, and more trials assessing the efficacy of this class of treatments are underway. The broad overlap between PTH, migraine, and PTSD suggests that research in this field should start with a re-appraisal of the diagnostic criteria, followed by methodologically sound epidemiological and clinical studies. Preclinical research should strive to create more reliable PTH models to support human neuroimaging, neurochemical, and neurogenetic studies, aiming to underpin new pathophysiological hypotheses that may expand treatment targets and improve the management of PTH patients.
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Affiliation(s)
- Giorgio Lambru
- The Headache Service, Pain Management and Neuromodulation Centre, NHS Foundation Trust, Guy's and St Thomas, London, UK.
| | - Silvia Benemei
- Health Sciences Department, Careggi University Hospital, University of Florence, and Headache Centre, Florence, Italy
| | - Anna P Andreou
- The Headache Service, Pain Management and Neuromodulation Centre, NHS Foundation Trust, Guy's and St Thomas, London, UK
- Headache Research, Wolfson CARD, Institute of Psychiatry, Psychology and Neuroscience, King's College London, London, UK
| | - Michelangelo Luciani
- Department of Clinical and Molecular Medicine, Sapienza University, Rome, Italy
- Emergency Medicine Unit, Regional Referral Headache Centre, DAI Medical Sciences, Sant'Andrea Hospital, Rome, Italy
| | - Gianluca Serafini
- Department of Neuroscience, Rehabilitation, Ophthalmology, Genetics and Maternal Childhood Sciences, Psychiatry Unit, University of Genoa, Genoa, Italy
- IRCCS Ospedale Policlinico San Martino, Genoa, Italy
| | | | - Paolo Martelletti
- Department of Clinical and Molecular Medicine, Sapienza University, Rome, Italy
- Emergency Medicine Unit, Regional Referral Headache Centre, DAI Medical Sciences, Sant'Andrea Hospital, Rome, Italy
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Trivedi M, Dumkrieger G, Chong CD, Dodick DW, Schwedt TJ. Impact of abuse on migraine-related sensory hypersensitivity symptoms: Results from the American Registry for Migraine Research. Headache 2021; 61:740-754. [PMID: 33779989 DOI: 10.1111/head.14100] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2020] [Revised: 01/15/2021] [Accepted: 02/08/2021] [Indexed: 01/22/2023]
Abstract
BACKGROUND AND OBJECTIVES Prior studies have established an association between a history of abuse and the development of migraine. This cross-sectional observational study explored the relationship between self-reported abuse history with migraine-related sensory hypersensitivity symptoms. METHODS In total, 588 adult patients with migraine from the American Registry for Migraine Research completed questionnaires: Generalized Anxiety Disorder-7, Patient Health Questionnaire-2 for depression, Photosensitivity Assessment Questionnaire, Hyperacusis Questionnaire, and Allodynia Symptom Checklist. Using four binary screening questions, patients were asked to self-report if they believed they had suffered emotional, physical, or sexual abuse in their lifetime. Differences in questionnaire scores between groups with and without a history of abuse were determined. Regression models adjusted for age, sex, and basic headache features analyzed the relationship between abuse history and sensory hypersensitivity symptoms. Moderation analysis explored the role of headache frequency in this relationship. Mediation analysis assessed the indirect (Mediated) effect (IE) of abuse on sensory hypersensitivity through depression or anxiety. Additional models analyzed relationships between sensory hypersensitivity symptoms and abuse subtypes or the number of abuse subtypes. RESULTS Of 588 participants, 222 (38%) reported a history of abuse. Patients with a history of abuse reported statistically significantly greater average headache frequency (7.6 vs. 4.7 days, p = 0.030). Patients with a history of abuse also reported higher average or median questionnaire scores: anxiety (7.6 vs. 4.7, p < 0.001, d = 0.56), depression (1.7 vs. 1.3, p = 0.009, d = 0.24), photophobia (0.54 vs. 0.44, p < 0.001, d = 0.32), hyperacusis (19.6 vs. 14.9, p < 0.001, d = 0.49), ictal allodynia (6.0 vs. 3.0, p < 0.001, d = 0.46), and interictal allodynia (1.0 vs. 0.0, p < 0.001, d = 0.30). After controlling for patient age, sex and years lived with headache, abuse maintained a significant association with every sensory hypersensitivity measure. Headache frequency significantly moderated the relationship between a history of abuse with increased ictal allodynia (p = 0.036). Anxiety significantly mediated the relationships between abuse with photophobia (IE = 0.03, 95% CI = 0.01-0.04), hyperacusis (IE = 1.51, 95% CI = 0.91-2.24), ictal allodynia (IE = 0.02, 95% CI = 0.01-0.04), and interictal allodynia (IE = 0.02, 95% CI = 0.01-0.06). Depression significantly mediated the relationship between abuse with photophobia (IE = 0.02, 95% CI = 0.01-0.03) and with hyperacusis (IE = 0.45, 95% CI = 0.11-0.88). The association between the individual subtypes of abuse and the number of subtypes of abuse with sensory hypersensitivity symptoms varied. CONCLUSION A history of abuse is associated with greater migraine-related sensory hypersensitivity symptoms. To reduce the impact of abuse on migraine symptoms, future studies should explore mechanistic connections between abuse and migraine-associated symptoms.
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Monsour DA, Lay C, Ansari T, Lagman-Bartolome AM. Post-Traumatic Headache in Children and Adolescents: a Narrative Review with a Focus on Management. Curr Neurol Neurosci Rep 2020; 20:53. [DOI: 10.1007/s11910-020-01068-w] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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11
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Benemei S, Labastida-Ramírez A, Abramova E, Brunelli N, Caronna E, Diana P, Gapeshin R, Hofacker MD, Maestrini I, Pías EM, Mikulenka P, Tikhonova O, Martelletti P, MaassenVanDenBrink A. Persistent post-traumatic headache: a migrainous loop or not? The preclinical evidence. J Headache Pain 2020; 21:90. [PMID: 32664898 PMCID: PMC7362418 DOI: 10.1186/s10194-020-01135-0] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2020] [Accepted: 05/25/2020] [Indexed: 12/11/2022] Open
Abstract
Background According to the International Classification of Headache Disorders 3, post-traumatic headache (PTH) attributed to traumatic brain injury (TBI) is a secondary headache reported to have developed within 7 days from head injury, regaining consciousness following the head injury, or discontinuation of medication(s) impairing the ability to sense or report headache following the head injury. It is one of the most common secondary headache disorders, and it is defined as persistent when it lasts more than 3 months. Main body Currently, due to the high prevalence of this disorder, several preclinical studies have been conducted using different animal models of mild TBI to reproduce conditions that engender PTH. Despite representing a simplification of a complex disorder and displaying different limitations concerning the human condition, animal models are still a mainstay to study in vivo the mechanisms of PTH and have provided valuable insight into the pathophysiology and possible treatment strategies. Different models reproduce different types of trauma and have been ideated in order to ensure maximal proximity to the human condition and optimal experimental reproducibility. Conclusion At present, despite its high prevalence, PTH is not entirely understood, and the differential contribution of pathophysiological mechanisms, also observed in other conditions like migraine, has to be clarified. Although facing limitations, animal models are needed to improve understanding of PTH. The knowledge of currently available models is necessary to all researchers who want to investigate PTH and contribute to unravel its mechanisms.
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Affiliation(s)
- Silvia Benemei
- Health Sciences Department, University of Florence and Headache Centre, Careggi University Hospital, Florence, Italy
| | - Alejandro Labastida-Ramírez
- Division of Vascular Medicine and Pharmacology, Department of Internal Medicine, Erasmus University Medical Center, Dr Molewaterplein 50, 3015 GE, Rotterdam, The Netherlands
| | - Ekaterina Abramova
- Pain Clinic Unit, Department of Anesthesiology, Pirogov City Clinical Hospital, Moscow, Russia
| | | | - Edoardo Caronna
- Neurology Department, Hospital Universitari Vall d'Hebron, Barcelona, Spain
| | - Paola Diana
- Child Neuropsychiatry Unit, Department of PROMISE, University of Palermo, Palermo, Italy
| | - Roman Gapeshin
- Department of Neurology and Manual Medicine, Pavlov First Saint-Petersburg State Medical University, Saint-Petersburg, Russia
| | - Maxi Dana Hofacker
- Department of Neurology, Headache Centre, Charité Universitatsmedizin Berlin, Berlin, Germany
| | - Ilaria Maestrini
- Department of Human Neurosciences, Sapienza University of Rome, Rome, Italy
| | - Enrique Martínez Pías
- Neurology Department, Hospital Clínico Universitario of Valladolid, Valladolid, Spain
| | - Petr Mikulenka
- Department of Neurology, Third Faculty of Medicine, Charles University and University Hospital Kralovske Vinohrady, Prague, Czech Republic
| | - Olga Tikhonova
- Department of neurology, Kazaryan Clinic of Epileptology and Neurology, Moscow, Russia
| | - Paolo Martelletti
- Department of Clinical and Molecular Medicine, Sapienza University of Rome, Rome, Italy
| | - Antoinette MaassenVanDenBrink
- Division of Vascular Medicine and Pharmacology, Department of Internal Medicine, Erasmus University Medical Center, Dr Molewaterplein 50, 3015 GE, Rotterdam, The Netherlands.
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12
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Guglielmetti M, Serafini G, Amore M, Martelletti P. The Relation between Persistent Post-Traumatic Headache and PTSD: Similarities and Possible Differences. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2020; 17:ijerph17114024. [PMID: 32516965 PMCID: PMC7313050 DOI: 10.3390/ijerph17114024] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 04/09/2020] [Revised: 05/11/2020] [Accepted: 05/26/2020] [Indexed: 12/27/2022]
Abstract
Post-traumatic headache (PTH) may be considered a secondary headache, which is linked to severe disability and psychosocial impairment. Interestingly, nearly 30% of subjects with persistent post-traumatic headache (PPTH) also suffer from post-traumatic stress disorder (PTSD). Although existing studies demonstrated the existence of common pathophysiological characteristics in subjects with migraine and PPTH, the differences and similarities between these complex diseases are currently poorly understood and are yet to be comprehensively elucidated. Thus, the present review aimed to systematically investigate the nature of PPTH in the effort to better identify both the neurobiological and clinical aspects underlying this condition. Overall, the included studies reported that: (1) the predictors for persistent acute traumatic injury to the head were female gender, persistent symptoms related to mild post-traumatic brain injury (mTBI), PTSD, elevated inflammatory markers, prior mild traumatic brain injury, being injured while suffering from alcohol abuse; (2) static/dynamic functional connectivity differences, white matter tract abnormalities, and morphology changes were found between PPTH and migraine in brain regions involved in pain processing; and (3) clinical differences which were most prominent at early time points when they were linked to the increased risk of PPTH. Based on the selected reports, the relation between migraine and PPTH needs to be considered bidirectionally, but PTSD may play a critical role in this relation. The main implications of these findings, with a specific focus on PTSD, are discussed. Further longitudinal studies are needed to reveal the exact nature of this relation, as well as to clarify the distinct clinical characteristics of migraine, PPTH, and PTSD.
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Affiliation(s)
- Martina Guglielmetti
- Sant’Andrea Hospital, Regional Referral Headache Centre, 00181 Rome, Italy; (M.G.); (P.M.)
- Department of Clinical and Molecular Medicine, Sapienza University, 00181 Rome, Italy
| | - Gianluca Serafini
- Department of Neuroscience, Rehabilitation, Ophtalmology, Genetics and Maternal Childhood Sciences, Psychiatry Unit, University of Genoa, 16132 Genoa, Italy;
- IRCCS Ospedale Policlinico San Martino, 16132 Genoa, Italy
- Correspondence: ; Tel.: +39-010-353-7668 (office); +39-347-537-2316 (mobile); Fax: +39-010-353-7669
| | - Mario Amore
- Department of Neuroscience, Rehabilitation, Ophtalmology, Genetics and Maternal Childhood Sciences, Psychiatry Unit, University of Genoa, 16132 Genoa, Italy;
- IRCCS Ospedale Policlinico San Martino, 16132 Genoa, Italy
| | - Paolo Martelletti
- Sant’Andrea Hospital, Regional Referral Headache Centre, 00181 Rome, Italy; (M.G.); (P.M.)
- Department of Clinical and Molecular Medicine, Sapienza University, 00181 Rome, Italy
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13
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Irwin SL, Kacperski J, Rastogi RG. Pediatric Post‐Traumatic Headache and Implications for Return to Sport: A Narrative Review. Headache 2020; 60:1076-1092. [DOI: 10.1111/head.13824] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2019] [Revised: 03/06/2020] [Accepted: 04/07/2020] [Indexed: 12/16/2022]
Affiliation(s)
- Samantha L. Irwin
- Department of Neurology University of California San Francisco San Francisco CA USA
| | - Joanne Kacperski
- Division of Neurology Cincinnati Children's Hospital Medical Center Cincinnati OH USA
- Department of Pediatrics College of Medicine University of Cincinnati Cincinnati OH USA
| | - Reena G. Rastogi
- Department of Neurology Barrow Neurological Institute at Phoenix Children's Hospital Phoenix AZ USA
- Department of Neurology University of Arizona College of Medicine Phoenix AZ USA
- Department of Child Health University of Arizona College of Medicine Phoenix AZ USA
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14
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Navratilova E, Rau J, Oyarzo J, Tien J, Mackenzie K, Stratton J, Remeniuk B, Schwedt T, Anderson T, Dodick D, Porreca F. CGRP-dependent and independent mechanisms of acute and persistent post-traumatic headache following mild traumatic brain injury in mice. Cephalalgia 2019; 39:1762-1775. [DOI: 10.1177/0333102419877662] [Citation(s) in RCA: 48] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Background Acute and persistent post-traumatic headache are often debilitating consequences of traumatic brain injury. Underlying physiological mechanisms of post-traumatic headache and its persistence remain unknown, and there are currently no approved therapies for these conditions. Post-traumatic headache often presents with a migraine-like phenotype. As calcitonin-gene related peptide promotes migraine headache, we explored the efficacy and timing of intervention with an anti- calcitonin-gene related peptide monoclonal antibody in novel preclinical models of acute post-traumatic headache and persistent post-traumatic headache following a mild traumatic brain injury event in mice. Methods Male, C57Bl/6 J mice received a sham procedure or mild traumatic brain injury resulting from a weight drop that allowed free head rotation while under minimal anesthesia. Periorbital and hindpaw tactile stimulation were used to assess mild traumatic brain injury-induced cutaneous allodynia. Two weeks after the injury, mice were challenged with stress, a common aggravator of migraine and post-traumatic headache, by exposure to bright lights (i.e. bright light stress) and cutaneous allodynia was measured hourly for 5 hours. A murine anti- calcitonin-gene related peptide monoclonal antibody was administered after mild traumatic brain injury at different time points to allow evaluation of the consequences of either early and sustained calcitonin-gene related peptide sequestration or late administration only prior to bright light stress. Results Mice with mild traumatic brain injury, but not a sham procedure, exhibited both periorbital and hindpaw cutaneous allodynia that resolved by post-injury day 13. Following resolution of injury-induced cutaneous allodynia, exposure to bright light stress re-instated periorbital and hindpaw cutaneous allodynia in injured, but not sham mice. Repeated administration of anti-calcitonin-gene related peptide monoclonal antibody at 2 hours, 7 and 14 days post mild traumatic brain injury significantly attenuated the expression of cutaneous allodynia when evaluated over the 14-day post injury time course and also prevented bright light stress-induced cutaneous allodynia in injured mice. Administration of anti-calcitonin-gene related peptide monoclonal antibody only at 2 hours and 7 days after mild traumatic brain injury blocked injury-induced cutaneous allodynia and partially prevented bright light stress-induced cutaneous allodynia. A single administration of anti-calcitonin-gene related peptide monoclonal antibody after the resolution of the peak injury-induced cutaneous allodynia, but prior to bright light stress challenge, did not prevent bright light stress-induced cutaneous allodynia. Conclusions We used a clinically relevant mild traumatic brain injury event in mice along with a provocative stimulus as novel models of acute post-traumatic headache and persistent post-traumatic headache. Following mild traumatic brain injury, mice demonstrated transient periorbital and hindpaw cutaneous allodynia suggestive of post-traumatic headache-related pain and establishment of central sensitization. Following resolution of injury-induced cutaneous allodynia, exposure to bright light stress re-established cutaneous allodynia, suggestive of persistent post-traumatic headache-related pain. Continuous early sequestration of calcitonin-gene related peptide prevented both acute post-traumatic headache and persistent post-traumatic headache. In contrast, delayed anti-calcitonin-gene related peptide monoclonal antibody treatment following establishment of central sensitization was ineffective in preventing persistent post-traumatic headache. These observations suggest that mechanisms involving calcitonin-gene related peptide underlie the expression of acute post-traumatic headache, and drive the development of central sensitization, increasing vulnerability to headache triggers and promoting persistent post-traumatic headache. Early and continuous calcitonin-gene related peptide blockade following mild traumatic brain injury may represent a viable treatment option for post-traumatic headache and for the prevention of post-traumatic headache persistence. Abbreviations CA Cutaneous allodynia CGRP Calcitonin gene-related peptide mTBI Mild traumatic brain injury PTH Post-traumatic headache APTH Acute post-traumatic headache PPTH Persistent post-traumatic headache
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Affiliation(s)
- Edita Navratilova
- Department of Pharmacology, Arizona Health Sciences Center, University of Arizona, Tucson, AZ, USA
| | - Jill Rau
- Mayo Clinic, Scottsdale, AZ, USA
| | | | | | | | | | - Bethany Remeniuk
- Department of Pharmacology, Arizona Health Sciences Center, University of Arizona, Tucson, AZ, USA
| | | | - Trent Anderson
- Department of Basic Medical Sciences, University of Arizona College of Medicine, Phoenix, AZ, USA
| | | | - Frank Porreca
- Department of Pharmacology, Arizona Health Sciences Center, University of Arizona, Tucson, AZ, USA
- Mayo Clinic, Scottsdale, AZ, USA
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15
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Abstract
PURPOSE OF REVIEW Headache following concussion and mild traumatic brain injury is very common in pediatrics. There is significant concern about appropriate management of acute and persistent headache following mild head injuries in children among affected youth, their families and care providers. RECENT FINDINGS The current article will review definitions and diagnoses of posttraumatic headache (PTHA), recent research regarding risk factors for persistence of postconcussion symptoms and headaches, current recommendations for the evaluation of youth with PTHA, recent data regarding efficacy of treatment options for PTHA, and current recommendations for the treatment of acute and persistent PTHA. SUMMARY PTHA is common following concussion in pediatrics. Some of the most consistent risk factors for persistent symptoms following concussion include female sex, adolescent age, prior concussion with prolonged recovery, prior headache history and high number of acute symptoms, particularly migrainous symptoms, following concussion. There are few prospective studies of the treatment of PTHA in pediatrics; however, a recent study found that short-term use of ibuprofen for those with acute PTHA following concussion may be associated with lower risk of symptoms and better function 1 week after injury. Currently complete rest or cocooning following concussion is not recommended as it may actually be associated with longer recovery time; a gradual return to cognitive and physical activity appears to be most effective strategy but more study is needed.
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16
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Strides Toward Better Understanding of Post-Traumatic Headache Pathophysiology Using Animal Models. Curr Pain Headache Rep 2018; 22:67. [PMID: 30073545 DOI: 10.1007/s11916-018-0720-6] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
PURPOSE OF REVIEW In recent years, the awareness of the detrimental impact of concussion and mild traumatic brain injuries (mTBI) is becoming more apparent. Concussive head trauma results in a constellation of cognitive and somatic symptoms of which post-traumatic headache is the most common. Our understanding of post-traumatic headache is limited by the paucity of well validated, characterized, and clinically relevant animal models with strong predictive validity. In this review, we aim to summarize and discuss current animal models of concussion/mTBI and related data that start to shed light on the pathophysiology of post-traumatic headache. RECENT FINDINGS Each of the models will be discussed in terms of their face, construct, and predictive validity as well as overall translational relevance to concussion, mTBI, and post-traumatic headache. Significant contributions to the pathophysiology of PTH garnered from these models are discussed as well as potential contributors to the development of chronic post-traumatic headache. Although post-traumatic headache is one of the most common symptoms following mild head trauma, there remains a disconnect between the study of mild traumatic brain injury and headache in the pre-clinical literature. A greater understanding of the relationship between these phenomena is currently needed to provide more insight into the increasing frequency of this debilitating condition in both military and civilian populations.
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17
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Shaw L, Morozova M, Abu-Arafeh I. Chronic post-traumatic headache in children and adolescents: systematic review of prevalence and headache features. Pain Manag 2017; 8:57-64. [PMID: 29192541 DOI: 10.2217/pmt-2017-0019] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
Abstract
The aim of this systematic review is to determine the prevalence and clinical features of chronic post-traumatic headache (CPTH) in children and adolescents. Literature search of PubMed, Embase, Cochrane databases and Google Scholar was carried out for all studies reporting on CPTH in children and young people under the age of 18 years between January 1980 and November 2016. Search command included post-traumatic headache, postconcussion syndrome, child and adolescent. Demographic data, diagnostic criteria of headache disorders, occurrence of headache after head injury and headache phenotypes were collected. The prevalence of nonspecific 'chronic headache' after head injury in children was 39% and prevalence of CPTH, as defined by the International Classification of Headache Disorders (2004), was 7.6% (95% CI: 5.9-9.7). Migraine-like headache was the most common presentation followed by tension-type headache. Other children had either mixed or unclassified headache disorders.
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Affiliation(s)
- Lauren Shaw
- Department of Paediatrics, Forth Valley Royal Hospital, Larbert, FK5 4WR, UK
| | - Maria Morozova
- Paediatric Neurosciences Unit, Royal Hospital for Children, 1345 Govan Road, Glasgow, G51 4TF, UK
| | - Ishaq Abu-Arafeh
- Department of Paediatrics, Forth Valley Royal Hospital, Larbert, FK5 4WR, UK.,Paediatric Neurosciences Unit, Royal Hospital for Children, 1345 Govan Road, Glasgow, G51 4TF, UK
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18
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Masoumi B, Heydari F, Hatamabadi H, Azizkhani R, Yoosefian Z, Zamani M. The Relationship between Risk Factors of Head Trauma with CT Scan Findings in Children with Minor Head Trauma Admitted to Hospital. Open Access Maced J Med Sci 2017; 5:319-323. [PMID: 28698750 PMCID: PMC5503730 DOI: 10.3889/oamjms.2017.071] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2017] [Revised: 03/22/2017] [Accepted: 04/18/2017] [Indexed: 12/17/2022] Open
Abstract
BACKGROUND: In emergency medicine for determining the intracranial injury (ICI) in children with head trauma, usually brain CT scan is performed. Since brain CT scan, especially in children, has some disadvantages, it is better to find a procedure which could help to choose only the children with real head trauma injury for brain CT scan. AIMS: The aim of this study is to find such procedure. This study was descriptive, analytic and non-interventional. METHODS: We reviewed the archived files of children with head trauma injuries referred to the emergency department of Imam Hossein Hospital within two years. Patient’s CT scan findings and head trauma risk factors were evaluated in this study. RESULTS: Out of 368 patients, 326 patients had normal brain CT scan. 28 of them showed symptoms of ICI consisting intraventricular haemorrhage (IVH), contusion, subarachnoid haemorrhage (SAH), subdural haemorrhage (SDH), epidural hematoma (EDH), and pneumocephalus. Twenty-seven patients showed skull FX, which 14 of them had an Isolated fracture, and 13 of them also showed symptoms of ICI. Since patients with isolated FX usually discharge quickly from Emergency Department; their data did not include in results of the study. The patients have been divided into two groups: 1- ICI, 2- without ICI. RR (relative risk), CI (Confidence interval) and sensitivity, positive predictive value (PPV), negative predictive value (NPV) and association of these risk factors with ICI were assessed with the Chi-2 test. In the end to determine the indications of CT scan, the presence of one of these five risk factors is important including abnormal mental status, clinical symptoms of skull FX, history of vomiting, craniofacial soft tissue injury (including subgaleal hematomas or laceration) and headache. CONCLUSIONS: For all other patients without these risk factors, observation and Follow Up can be used which has more advantages and less cost.
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Affiliation(s)
- Babak Masoumi
- Emergency Medicine Research Center, Department of Emergency Medicine, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Farhad Heydari
- Emergency Medicine Research Center, Department of Emergency Medicine, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Hamidreza Hatamabadi
- Safety Promotion and Injury Prevention Research Center, Department of Emergency Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Reza Azizkhani
- Emergency Medicine Research Center, Department of Emergency Medicine, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Zahra Yoosefian
- Behavioral Sciences Research Center, Department of Psychiatry, School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Majid Zamani
- Emergency Medicine Research Center, Department of Emergency Medicine, Isfahan University of Medical Sciences, Isfahan, Iran
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