Cycle Headache: Menstrual or Premenstrual Migraine

• In the 2-3 days preceding the onset of menstruation (PMS migraine)

or

• In the first 3 days following the onset of menstrual flow (menstrual migraine).

The headache is triggered by the hormonal changes (in particular, by the drop in the level of estrogen) that characterize this phase of the menstrual cycle.