• Andrea Kuczynski, Susan Crawford, Lisa Bodell, Deborah Dewey, and Karen M Barlow.
• University of Calgary, Calgary, AB, Canada.
• Dev Med Child Neurol. 2013 Jul 1;55(7):636-41.

AimPost-traumatic headaches (PTHs) following mild traumatic brain injury (mTBI) are common; however, few studies have examined the characteristics of PTHs or their response to treatment. The aims of this study were (1) to describe the clinical characteristics of PTH in a prospective cohort of children presenting to a paediatric emergency department with mTBI, and (2) to evaluate the response of PTH to treatment.MethodThe emergency department cohort was obtained from a prospective longitudinal cohort study of symptoms following mTBI (n=670; 385 males, 285 females) and a comparison group of children with extracranial injury (n=120; 61 males, 59 females). A retrospective chart review of a separate cohort of children from a brain injury clinic (the treatment cohort) treated for PTH was performed (n=44; 29 females, 15 males; mean age 14 y 1 mo, SD 3 y 1 mo). The median time since injury was 6.9 months (range 1-29 mo). The mean follow-up interval after treatment started was 5.5 weeks (SD 4.3 wks).ResultsAmong the emergency department cohort (n=39; 20 males, 19 females; mean age 11 y 1 mo, SD 4 y 3 mo) 11% of children were symptomatic with PTHs at a mean of 15.8 days (SD 11.6d) post injury. Three months post injury, 7.8% of children complained of headaches; of those, 56% had pre-existing headaches and 18% had experienced migraine before the injury. Although headache type varied, 55% met the criteria for migraine. A family or past medical history of migraine was present in 82% of cases. Among the treatment cohort, medications included amitriptyline, flunarizine, topiramate, and melatonin, with an overall response rate of 64%.ConclusionThis is the first prospective cohort study to describe the clinical characteristics of PTHs following mTBI in children. Migraine was the most common headache type seen; other headaches included tension-type, cervicogenic, and occipital neuralgias, and 64% responded to treatment. Referral to a headache specialist should be considered, especially when the features are not typical of one of the primary headache disorders.© The Authors. Developmental Medicine & Child Neurology © 2013 Mac Keith Press.

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