One-year course of paediatric headache in children and adolescents aged 8-15 years.

The aims of the present study were the assessment of headache (HA) prevalence in German children and adolescents in the second year of a 4-year longitudinal study and the analysis of headache status change from year 1 to year 2. The original sample consisted of 8800 households with a child aged 7-14 years. A total of 4159 households responded in both year 1 and year 2, yielding 3984 valid parent questionnaires. Data regarding various aspects of the child's HA history and general health were gathered via mailed questionnaires from the parents. Of the households returning valid parent questionnaires at survey 2, 48.9% reported their child to have experienced headaches during the previous 6 months (53% at survey 1). Weekly HA was reported for 6.5% of the children, monthly or less frequent HA for 16.5% and 25.9%, respectively. With regard to headache diagnosis, 55.0% of the children and adolescents with HA experienced tension-type HA (TTH) and 11.3% migraine with or without aura (M). For more than half of the children and adolescents with HA (57.0%) the frequency of head pain remained stable over the period of 1 year (i.e. same frequency category in years 1 and 2). Improved and worsened HA status regarding frequency of occurrence was found in 22.3% and 20.7% of the subjects, respectively. Thus, there was no definite trend towards an increase of HA episodes over the course of 1 year regarding the individual child or adolescent. The most stable type of HA was TTH.