Introduction
Headache, headaches, headache
HEADACHE DISORDERS
Headache in children is common, often recurring, and prevalence rises from 5% at the age of three to more than 50% in puberty [Basic knowledge of headache characteristics and demographic factors is important to aid proper management and prevention. Treatment strategies for headaches are typically founded on the diagnosis of headache type, based on the International Classification of Headache Disorders (ICHD) [To improve our knowledge about children with recurrent headaches we will take advantage of a population sampled for a randomized controlled trial (RCT) investigating the effectiveness of chiropractic spinal manipulation in children aged 7–14 with recurrent headaches [