The case of a 9-year-old patient, in which the EEG was made during three crises of headache without the character of migraine is reported. Simultaneously with the crises the EEG showed rhythmic sharp waves in the right cerebral hemisphere prevailing in the occipital region. Comments are made on the rarity of reports showing irritative abnormalities in the EEG during headache crises. The value of these findings for the classification of some cases of headache within the concept of epilepsy is emphasized.