Prevalence of migraine and tensiontype headache in primary-school children in Shiraz

From January to June 2003 we determined the prevalence of the various types of head- ache in 2226 schoolchildren in Shiraz (age 6–13 years) selected by multistage random sampling. Data were collected by questionnaire and clinical examination. International Headache Society criteria were used for diagnosis. The overall prevalence of headache was 31%. Prevalence rates of migraine and tension-type headache were 1.7% and 5.5% respectively. The prevalence of headache increased with age and girls were significantly more likely to report tensions-type headache. Positive family history of headache and abnormal sleep pattern were significantly associated with migraine.