Inter and intra-individual differences in menstrual migraine

Key messages

• Intensive longitudinal data, capturing migraine occurrence and the menstrual cycle, is required for studying the association of menses with migraine.
• The risk of migraine is elevated during the perimenstrual window among women with migraine.
• There is inter and intra-woman variability for migraine occurrence in the perimenstrual window.
• There was more variability within women than among women.
• Future studies should include investigations into factors explaining within-women variability.