Hormonal Headache and Menstrual Migraine: Why Women Get Worse Headaches Around Their Period

Migraine is two to three times more common in women than men — and the primary reason is hormonal. Oestrogen is a potent modulator of neuronal excitability; the fall in oestrogen that occurs in the days before menstruation lowers the seizure and migraine threshold. The most disabling migraines in women who have migraine typically occur during the perimenstrual window — days -2 to +3 of the menstrual cycle (day 1 = first day of period). These attacks are called pure menstrual migraine (PMM) if they occur only perimenstrually, or menstrually-related migraine (MRM) if they occur at other times too.

Why Perimenstrual Migraine Is More Severe

Perimenstrual migraine attacks are longer (lasting 2–3 days rather than the typical 4–72 hours), more severe, less responsive to usual acute treatment (triptans), and more likely to cause nausea and vomiting. This is because the oestrogen withdrawal itself — not just the low oestrogen level — is the trigger; the migraine is neurologically "primed" before the attack begins.

Other Hormonal Migraine Triggers in Women

Oral contraceptive pill: the pill-free interval causes oestrogen withdrawal — migraine peaks in the week off the pill. Solution: continuous OCP use, or using an oestrogen-containing patch during the pill-free week. Perimenopause: fluctuating oestrogen levels during the menopausal transition worsen migraine in most women — migraine typically improves after menopause when hormones stabilise. Pregnancy: migraine usually improves markedly in the second and third trimesters (sustained high oestrogen) — but worsens again postpartum.

Prevention Strategies for Menstrual Migraine

Short-term prevention (mini-prophylaxis): taking an NSAID (naproxen 500mg twice daily) or frovatriptan starting 2 days before expected menstruation and continuing for 5–7 days. Oestrogen supplementation (25–100 microgram oestrogen patch or gel) during the perimenstrual window prevents the oestrogen withdrawal trigger. Continuous OCP use for those on contraception. For those with frequent attacks throughout the month: conventional daily preventive therapy as for episodic migraine. Sri Anand CNC, Chanda Nagar, Hyderabad. Call +91 90633 66983.