Hormonal headaches

Hormonal headaches are the cycle-linked, estrogen-withdrawal kind, distinct from the broader headaches & migraines picture. They cluster around the period, around ovulation, and across the long, unpredictable estrogen swings of perimenopause. The pattern is the diagnosis. The pattern is also what unlocks the treatment.

It's not 'low estrogen', it's the drop. The headache lives in the slope of the curve, not the absolute number.

Estrogen withdrawal triggers the attack. When estrogen falls quickly (the 48 hours before a period, after ovulation, or during the long mid-cycle dips of perimenopause), it sensitises trigeminal pain pathways and serotonergic systems in the brain. The headache typically arrives 1 to 3 days into the drop.

Perimenopause makes the pattern messier, not better. Most people expect their migraines to ease as periods become less regular. For the first several years of perimenopause, the opposite usually happens — more frequent, longer, less predictable, because the estrogen swings are bigger and more chaotic, not smaller.

Aura sometimes appears for the first time in midlife. New-onset aura in perimenopause is a known phenomenon and worth flagging to a doctor at the next visit (not urgently, but on the record). Aura with stroke risk factors changes the conversation about combined hormonal contraception.

After menopause, most settle. Once estrogen levels are low and stable for 1 to 2 years post-menopause, the cycle-linked headache pattern typically eases substantially. The journey through perimenopause is the hard bit; the destination is usually quieter.

Sleep, skipped meals and dehydration are amplifiers. Hormonal headaches still need a trigger to fire. The most reliable amplifiers are a night of poor sleep, a skipped meal, alcohol, and dehydration. Stacking two of those on a vulnerable cycle day almost guarantees an attack.

Two layers: better acute treatment when one arrives, and steadying the estrogen curve so fewer arrive at all.

Treat early and at full dose. Hormonal headaches respond best when treatment starts within the first 30 minutes. Half a dose of a triptan because you're 'hoping it'll pass' is the most common reason a headache wins. Talk to a doctor about a clear acute plan you can run yourself.

Continuous, transdermal estrogen often steadies things. For perimenopausal people without aura, continuous (no-break) transdermal estradiol can flatten the swings that drive the headaches. Patches and gels avoid the liver-pass of oral estrogen, which matters for clot risk in migraineurs. This is a menopause-trained doctor conversation, not a GP one in most cases.

Avoid combined oral contraceptives if you have aura. For people with migraine with aura, combined hormonal contraception raises stroke risk and is generally not recommended. Progestogen-only options (mini-pill, Mirena, implant) are usually fine. This is non-negotiable safety, not a preference.

Magnesium glycinate, daily. 300 to 400 mg daily of magnesium glycinate or citrate has reasonable trial evidence for menstrual migraine prevention. That's the amount used in research, not a dose set for you. Cheap, usually well tolerated, takes 2 to 3 cycles to show effect. Worth raising with a doctor or pharmacist first if you have kidney disease or take other regular medication.

Triptans timed to the cycle, for predictable attacks. If your period is regular and the headache lands on the same day every month, some doctors prescribe a short course of long-acting triptan (frovatriptan, naratriptan) for two days before through three days after the expected start. Mini-prevention. Worth asking about if the pattern is reliable.

Protect sleep on the vulnerable days. Pre-period and post-ovulation aren't the nights to push deadlines, drink wine or stay up scrolling. Treating the cycle as data and adjusting the week around it (where possible) shrinks attack frequency more than most supplements do.

Newer preventives if it's frequent or disabling. CGRP-blocking monoclonal antibodies (erenumab, fremanezumab, galcanezumab) and CGRP-targeting orals (rimegepant, atogepant) have changed migraine prevention in the last few years. Not first-line for everyone, but worth raising with a neurologist if you're losing 4+ days a month.