Migraines are far more common among adult women and often starts at puberty with the beginning of menstruation when there is a dramatic shift in hormones. Experts say that any fluctuation in estrogen can trigger a migraine in sensitized women. Birth control and pregnancy can reduce migraines for some women, but can increase them for others. In a small subset of women, migraine attacks begin when they start using OC and occur during the "non-hormone week."

Migraines that occur in women around their menstrual cycle are called "menstrual migraines." If a woman has predominantly menstrual migraines, the outlook for them may improve with the onset of menopause, when estrogen levels begin to drop off permanently

In general:

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