The purpose of this retrospective study was to compare headache etiology, type, and burden and the learning and behavioral profile in children with early-onset (under 6 years) and late-onset (8-12 years) headaches. The study included 133 patients, 35 in the early-onset group and 98 in the late-onset group. Headache diagnosis was based on International Classification of Headache Disorders -II (ICHD-II) criteria. Learning profile and behavioral problems were assessed by parental reports. Tension headache was the most common diagnosis in the early-onset headache group (51.4%). No significant differences were found between the age groups with regard to headache etiology, disability, abnormal neuroimaging results, school performance, or attention problems. Nevertheless, the early-onset group patients had a significantly higher prevalence of behavioral problems: 25.7% versus 11.2% (P < .02). The authors suggest that early age of headache onset does not imply a harmful etiology or a relentless headache disability or burden.
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