The good news is that for many women migraine improves, often dramatically, once menopause is reached. This may be especially true for women who previously had many menstrually related migraine attacks. In menopause, the monthly hormonal fluctuations stop, and therefore they can no longer trigger migraine headaches.

The bad news is that women who have hormonally sensitive migraine attacks may go through a difficult several years during the perimenopausal period just prior to reaching full menopause. This is though to occur because during the perimenopausal time period, large fluctuations in blood estrogen levels can occur, often in an irregular pattern.

Once again, special treatment strategies, some of which may involve different types of hormonal replacement treatments for a time, can be tried. If perimenopausal worsening of migraine becomes a major problem and can not be controlled with the usual migraine treatments, it is worth discussing this with your doctor.
Also, a minority of women with migraine do not have improvement with menopause. Careful attention to migraine treatment can however usually lead to satisfactory management of the migraine attacks.