Headaches a week before your period: is it normal?

A headache the week before your period usually lines up with the luteal phase, the stretch after ovulation when progesterone rises, then both progesterone and estrogen fall before bleeding starts. Falling estrogen can make the trigeminal system, the nerve network most linked to migraine pain, more sensitive (Pharmacotherapy, 2017).

If your cycle runs close to 28 days, a week out from your period lands you around day 21, solidly in the luteal phase rather than near ovulation. Shorter or longer cycles shift that window earlier or later.

A study that tracked women with PMS for three months found two headache types made up most cases:

• Migraine without aura: 60% of premenstrual headaches
• Tension-type headache: 30% of premenstrual headaches

(Arquivos de Neuro-Psiquiatria, 2009). A separate study of headache patients found the premenstrual period was a commonly reported trigger, especially for migraine with aura (BMC Research Notes, 2015).

For more on what's typical in this window, see symptoms a week before your period and why headaches happen in the luteal phase.

This pattern doesn't make the pain less real. The trigger being hormonal doesn't make the headache imaginary.

Most premenstrual headaches fall into one of two types.

Type	What it usually feels like	How it shows up before a period
Migraine without aura	Throbbing, often one-sided, worse with light, noise or movement	Most common type reported in PMS headache studies (Arquivos de Neuro-Psiquiatria, 2009)
Tension-type headache	Dull, band-like pressure on both sides of the head	Second most common in the same study
Menstrual migraine	A migraine that reliably shows up in the days around your period	Tends to be longer and more severe than migraines at other times in the cycle (Neurology, 2008)

If your headache fits the migraine pattern and shows up reliably around your period, it may be what doctors call menstrually related migraine. For a closer look at migraine-type head pain before your period, see headaches before your period.

Either type can also show up with neck tension, nausea, or sensitivity to light. That's common, and it doesn't change what the headache is called.

A headache alone doesn't tell you much, since it's common in both PMS and early pregnancy. A few things can help you tell them apart:

• A PMS headache usually eases within a few days of your period starting.
• An early pregnancy headache doesn't ease on schedule, because your period doesn't come.
• Breast tenderness, fatigue and mood changes happen in both, so they aren't a reliable way to tell the two apart.
• A home pregnancy test, taken after a missed period, gives the clearest answer.

If your period is late and the headache hasn't lifted, that combination is worth checking with a test before anything else. For a fuller breakdown of overlapping signs, see PMS or pregnant? How to tell the difference.

A few approaches have research behind them, though none work for everyone.

• Resting in a dark, quiet room eases many migraines within a couple of hours.
• Mefenamic acid, an NSAID that needs a prescription, has grade B evidence for easing menstrually related migraine (Neurology, 2008). A general over-the-counter NSAID like ibuprofen is a reasonable first try, though it wasn't the one studied in that guideline.
• For migraines that reliably follow your cycle, a doctor may prescribe a triptan for the attack itself. In one placebo-controlled trial, oral sumatriptan brought relief to 67% of attacks treated inside the menstrual window, versus 33% on placebo (Journal of Headache and Pain, 2005).
• Regular aerobic exercise, three sessions a week for eight weeks, reduced headache severity compared with a control group in one trial (p = 0.001) (BMC Women's Health, 2018).
• Keeping caffeine intake steady, rather than skipping your usual cup, can head off a withdrawal headache stacking on top of a hormonal one.

A doctor decides what's right for your pattern, especially before starting anything beyond an occasional NSAID.

See a doctor if your headaches take over a week of every month, don't respond to your usual pain relief, or come with vision changes, weakness, confusion, or the worst headache of your life. Bring a headache diary covering two cycles; it helps show whether the pattern is tied to your period.

If mood symptoms, like irritability, anxiety or a flat mood, show up in that same week and ease within a few days of your period starting, mention that pattern too. It can point toward PMDD, which is diagnosed with daily symptom tracking over at least two cycles.

Headache diaries are also how doctors confirm menstrual migraine and PMDD, since both rely on a pattern across cycles rather than a single cycle's symptoms. A PMS calculator can give you a rough estimate of your next window, a useful starting point for that diary.

Here's what the evidence shows for options people often ask about.

Option	What the research found	Evidence
Sumatriptan (triptan)	Relief in 67% of attacks treated inside the menstrual window, vs 33% on placebo	Placebo-controlled trial, n=115 (Journal of Headache and Pain, 2005)
Mefenamic acid (NSAID), sumatriptan or rizatriptan (triptans)	Grade B recommendation for menstrually related migraine	Evidence-based guideline (Neurology, 2008)
Frovatriptan or naratriptan, for short-term prevention	Grade B recommendation around the period	Evidence-based guideline (Neurology, 2008)
CGRP blocker (telcagepant)	No significant difference from placebo on monthly headache days in the main group studied	RCT, efficacy subset n=887 (telcagepant) vs n=447 (placebo) (Cephalalgia, 2016)
Aerobic exercise	Reduced headache severity after eight weeks (p = 0.001)	RCT, n=65 (BMC Women's Health, 2018)
Rosa damascena (rose) aromatherapy	No significant effect on menstruation-related pain; effects on headache specifically weren't clearly established	Systematic review of RCTs (Journal of Education and Health Promotion, 2021)

None of this is a reason to self-prescribe. A doctor matches the option to your headache type, your health history, and how often it happens.