Daily migraine with aura: A new migraine variant

The frequency of migraine attacks is not used as a diagnostic criterion, ho wever, it is a very important factor in the evaluation of migraine severity and its treatment. Several studies report the frequency of migraine attack s using the International Headache Society criteria. No investigator, howev er, has reported daily migraine attacks. In the current report, we present five patients whose headaches transformed from episodic migraine to daily migraine with aura. To the best of our kno wledge, this is the first description of this variant of migraine. The symp toms in all the patients described comply strictly with the International H eadache Society criteria for the diagnosis of migraine with typical aura, An interesting additional observation concerns the beneficial effect of phe nytoin, a drug that has not proved to be effective in migraine but showed s ome efficacy in our patients.