الفهرس 
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Abstract
This study is a cross sectional population based epidemiological study was done from March 2014 to December 2014 in Minia governorate at different schools. The study samples were 800 children from primary schools aged 7_12 years old by using screening questionnaire revealing who has headache then the analysis of this headache whether chronic or not disabling or not and the concomitant symptoms with it.
The results showed that:
The occurrence of headache increased among primary school children as its incidence is 57.1%, chronic headache represented 33.5% while female incidence of chronic headache is more than male with significant p value (=0.004) showing there is a significant strong correlation between sex and chronic headache, with no difference whether those children live at urban or rural areas and there is no significant difference regarding to their socioeconomic classes.
Chronic headache may interfere with the child lifestyle, as we found at this study that the incidence of school absence increased due to chronic headache (65.7%) with high significance p value (0.001) lead to increased incidence of learning disability (66.0%) p value (0.001).
There was some concomitant symptoms with chronic headache like vertigo, blurring of vision, vomiting, constipation, inattention showed significant occurrence (p value=0.001) revealed a strong association between these symptoms and chronic headache, convulsion (p value=0.046) and no significance difference as regard to some other symptoms.
EEG was done to some of the children who had chronic headache 40.5 % have epileptic changes, also MRI was done to children who had chronic headache and there were 11.5 % had maxillary sinusitis, 2.9 % had sphenoid sinusitis, 2.9 % had cortical brain atrophy, 2.9 % had obstructive hydrocephalus.