Abstract Purpose Headache in epileptic population ranges from 8% to 15%. The aim of this paper was to study the clinical and temporal characteristics of primary headache comorbidity in idiopathic epileptic children. Methods From June 2006 to June 2009, a cross-sectional multi-center study involving five Italian Child Neurology University Centers (two in Rome, one in Chieti, one in Naples, and one in L'Aquila) was conducted. Among 1,264 consecutively newly diagnosed, idiopathic, partial, or generalized, epileptic children, according to ILAE diagnostic criteria (aged between 5 and 15 years of age), we selected 142 children (11.2%) (130 of whom completed the study) who showed an associated peri-ictal and/or interictal headache diagnosed according to the International Headache Society Criteria. Rare cases of “ictal epileptic headache”, in which headache represents the sole ictal epileptic manifestation, were excluded from this study. Results and conclusions Post-ictal headaches were most frequent (62%). Pre-ictal headaches were less common (30%). Inter-ictal headaches were described in 57.6%. Clear migrainous features were present in 93% of pre-ictal and 81.4% of post-ictal headaches. Inter-ictal headaches meet criteria for migraines in 87%. The association between partial epilepsy and migraine without aura is most common and reported in 82% of our patients with peri-ictal headache and in 76.5% of patients with post-ictal headache. PMID: 21445630
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