--- title: Follicular phase migraine: why it happens and what helps description: A follicular phase migraine often clusters in the first days of your period, when estrogen drops sharply, then eases as estrogen rises toward ovulation. url: https://niyora.com/cycle/follicular-phase-migraine/ --- - [Niyora](https://niyora.com/) - [Your cycle](https://niyora.com/cycle/) - Migraines in the follicular phase: why it happens Follicular phase # Migraines in the follicular phase: why it happens Migraines that cluster in the first days of your cycle usually happen because estrogen and progesterone hit their lowest point right as your period starts, which is also the first day of the follicular phase. The sharp drop, more than low hormones on their own, seems to trigger the migraine. They usually ease over the following days as estrogen starts climbing toward ovulation. Updated 14 October 2026 Niyora editorial Limited evidence Follicular phase Days 1 to 13 Where this sits in your cycle - Period - Building - Ovulation - Luteal - PMS window ## At a glance - Migraines often cluster in the first few days of a cycle, when estrogen and progesterone hit their lowest point. - The first days of bleeding are already inside the follicular phase, so a 'menstrual migraine' and a follicular phase migraine usually describe the same days. - Migraines from this pattern typically ease as the follicular phase continues and estrogen climbs toward ovulation. - PMS migraines happen before a period and ease once it starts; follicular phase migraines start with or after the period. - Tracking cycle day alongside migraine onset for two to three cycles shows whether the pattern holds. ## Strength of evidence Limited evidence - None - Limited - Mixed - Moderate - Strong Direct research on follicular phase migraine frequency is sparse. The strongest related finding is a 2020 meta-analysis of 778 women showing cortisol runs higher in the follicular phase than the luteal phase, which may interact with the well-documented drop in estrogen right as a period starts. Side by side PMS migraine and Follicular migraine Timing PMS migraine One to two weeks before period Follicular migraine As period starts or days after Also compared in the table below - Hormone driver - What happens next - Named for phase | Compared on | PMS migraine | Follicular migraine | | --- | --- | --- | | Timing | One to two weeks before period | As period starts or days after | | Hormone driver | Estrogen falling in late luteal phase | Estrogen at its lowest as follicular phase begins | | What happens next | Eases within a day or two of bleeding starting | Eases gradually as estrogen rises toward ovulation | | Named for phase | Luteal phase | Follicular phase | ## Why do you get migraines in the follicular phase? The follicular phase starts on day one of your period and runs until ovulation, so the first days of bleeding already sit inside this phase, not a separate one. Estrogen and progesterone are at their lowest right in that window, and that drop is often what sets a migraine off. Your brain's blood vessels and your serotonin system both respond fast to estrogen, which climbs and falls across the [follicular phase](https://niyora.com/cycle/follicular-phase-hormones/) more than in any other part of the cycle. A sharp fall, rather than levels staying low or rising steadily, seems to be what triggers a migraine in people whose brains react to that kind of shift. Migraines around a period are often called 'menstrual migraines.' That clinical label covers a window from two days before bleeding through the first few days of it, so it overlaps with, but isn't identical to, the follicular phase pattern described here. A 2020 meta-analysis of 778 women found that cortisol, a stress hormone, tends to run higher in the follicular phase than in the luteal phase, though the effect was small. Whether this cortisol shift adds to migraine sensitivity hasn't been tested directly, so treat it as an open question rather than a known mechanism. **Estrogen withdrawal**, the sharp drop itself, is the mechanism most consistently linked to this pattern. ## What helps right now? When a migraine starts in the first days of your cycle, the goal is to cut stimulation and support your body while the hormone shift settles. - Get into a dark, quiet room if you can, even for 20 minutes. - Put a cold compress on your forehead or the back of your neck. - Drink water. Dehydration makes migraines worse and is easy to miss during a heavy period. - Take a pain reliever early, before the pain peaks, following the label. - Eat something small if you haven't eaten recently; low blood sugar can add to the pain. If migraines keep returning on the same days each cycle, noting the time they start can tell you whether they're riding the estrogen drop or something else going on that week. When to see a doctor If migraines take several days out of your month, every month, or come with new vision changes, weakness or confused speech, see a GP or neurologist and bring notes on when they start relative to your period. Right now When a migraine hits in the first days of your cycle - 1 Get into a dark, quiet room, even for 20 minutes. - 2 Put a cold compress on your forehead or the back of your neck. - 3 Drink water and eat something small if you haven't recently. - 4 Take a pain reliever early, before the pain peaks, following the label. - 5 Note the day relative to your cycle, so you can check the pattern next month. Niyora walks you through this when it happens: - Calm down - - See it another way - - Choose what to say ## When in the follicular phase is it worst? Migraines linked to this phase cluster hardest in the first few days, then usually ease as the phase continues. | Days of cycle | What's happening hormonally | Migraine likelihood | | --- | --- | --- | | Days 1 to 3 (bleeding) | Estrogen and progesterone are at their lowest point | Highest | | Days 4 to 7 | Estrogen starts climbing from its low point | Easing | | Days 8 to 13 | Estrogen keeps rising toward the peak before ovulation | Lowest | By the time you're close to [ovulation](https://niyora.com/cycle/follicular-phase/), estrogen is near the highest point of the whole cycle, and most people find migraines far less likely in these days. If your migraines don't follow this pattern, or they show up in the second half of the follicular phase instead, that's worth tracking separately rather than assuming it's the same hormone drop. ## Is it PMS or something else? PMS symptoms, including PMS-related migraines, show up in the [one to two weeks before your period](https://niyora.com/luteal-phase/) and ease once bleeding starts. A follicular phase migraine tends to do the opposite, starting as bleeding begins or in the days right after. Signs it's more likely PMS-related: - The migraine starts before your period, in the days you'd expect PMS. - It fades within a day or two once bleeding starts. Signs it's more likely follicular phase related: - The migraine starts with your period or in the days right after. - It eases gradually as the days pass, in step with rising estrogen. Niyora is a PMS and PMDD support app. Its estimated PMS window can show you whether a migraine is landing in the days before your period or the days after it starts, which points toward a different cause. Either pattern can exist alongside a migraine condition that isn't tied to your cycle at all. If migraines show up at random points across the month too, the hormone drop probably isn't the whole story, and that's worth mentioning to a doctor. ## How do you track it across cycles? A simple log over two to three cycles tells you more than guessing month to month. - Mark cycle day one on the first day of full bleeding. - Note the day a migraine starts and rate the pain from 1 to 10. - Write down what else is happening that day: bleeding, mood, sleep, stress. - Keep going for two to three full cycles before you look for a pattern. - Compare the days migraines started against your cycle day each time. After a few cycles, you'll usually see whether migraines cluster in the first days of bleeding, drift later into the follicular phase, or show no connection to your cycle at all. The cycle phase calculator can help you see roughly which phase you're in on any given day while you build this log. ## What does the research say? Most research on the follicular phase focuses on outcomes other than migraine, so there's no precise estimate of how common or severe follicular phase migraines are. What the research does support is the hormone mechanism. Cortisol runs measurably higher in the follicular phase than the luteal phase (a 2020 meta-analysis of 778 women found a small but real difference), and estrogen itself falls sharply right as the follicular phase begins. Together these shifts give a plausible explanation for why some people's migraines cluster here, even without a dedicated migraine study confirming the exact size of the effect. If you want to understand the hormone swings behind this pattern in more depth, the [hormones and mood across the whole cycle](https://niyora.com/cycle/menstrual-cycle-and-mood/) overview covers how estrogen, progesterone and mood-related chemicals move together, not just on their own. What the research says A 2020 meta-analysis of 778 women found cortisol runs higher in the follicular phase than the luteal phase (Hedges' g 0.13), a small but real difference. Whether it affects migraine sensitivity hasn't been studied directly. From the research library ## Research on migraine 146 studies in the library look at migraine in PMS and PMDD. They were published from 1962 to 2026, and each one has a short summary of what was tested and found. 146 studies, 1962 to 2026 How strong the studies are Strong study design 9 Moderate study design 40 Early or limited evidence 97 - [Systematic review, 2023What hormonal treatments have been tested for PMDD, menstrual migraine, and catamenial epilepsy?Hormonal treatments have been tested 56 times for premenstrual mood disorder, 21 times for menstrual migraine, and 8 times for catamenial epilepsy. Combined oral contraceptives were a frequent focus.Strong study design](https://niyora.com/research/papers/a-scoping-review-of-hormonal-clinical-trials-in-menstrual-cycle-related-brain-2023/) - [Cohort study, 2022Can women accurately tell if they have period-related migraines, or do they need to track them?No. Women couldn't accurately tell if they had period migraines. Most needed to keep a daily headache diary for several cycles for accurate diagnosis.Strong study design](https://niyora.com/research/papers/validation-of-diagnostic-ichd-3-criteria-for-menstrual-migraine-2022/) - [Guideline, 2021How should migraine be managed in women, particularly menstrual migraine?This guideline covers migraine treatment approaches, noting that menstrual migraine, pregnancy, contraception, and hormone therapy are specific considerations. The abstract does not provide specific treatment details for menstrual migraine.Strong study design](https://niyora.com/research/papers/revised-guidelines-of-the-french-headache-society-for-the-diagnosis-and-2021/) - [Randomised trial, 2016Does telcagepant prevent migraines during the menstrual period?Telcagepant did not reduce overall monthly migraine days. However, it did reduce headaches on the days it was taken around the period. It was generally safe.Strong study design](https://niyora.com/research/papers/randomized-controlled-trial-of-the-cgrp-receptor-antagonist-telcagepant-for-2016/) - [Randomised trial, 2014Does the combination of sumatriptan and naproxen sodium reduce menstrual symptoms and migraine?Yes. The combination was better than placebo for tiredness, irritability, bloating, abdominal pain, and back pain, as well as migraine. However, women with severe period pain responded less well to migraine treatment.Strong study design](https://niyora.com/research/papers/relief-of-menstrual-symptoms-and-migraine-with-a-single-tablet-formulation-of-2014/) - [Randomised trial, 2005Does sumatriptan work for migraines around the menstrual cycle?Yes, sumatriptan 100 mg gave headache relief to 67% of women for migraines during their menstrual window compared to 33% on placebo. Sumatriptan was well tolerated.Strong study design](https://niyora.com/research/papers/managing-migraine-headaches-experienced-by-patients-who-self-report-with-2005/) ### Clinical trials - [Repetitive GON Blockade for Menstrual MigraineCompleted, Turkey (Türkiye)](https://niyora.com/research/trials/repetitive-gon-blockade-for-menstrual-migraine-nct07576309/) - [Telcagepant for Prevention of Menstrually Related Migraine in Female Participants With Episodic Migraine (MK-0974-065)Completed](https://niyora.com/research/trials/telcagepant-for-prevention-of-menstrually-related-migraine-nct01125774/) [See all 146 studies on migraine](https://niyora.com/research/topics/comorbidity-migraine/) ## Questions people ask Is a follicular phase migraine the same as a menstrual migraine? + A follicular phase migraine overlaps with what's clinically called a 'menstrual migraine,' a window running from two days before your period through its first few days. So the terms cover similar but not identical days, since menstrual migraine also includes two days before bleeding starts. Can you get a migraine in the follicular phase without having PMS? + Yes. PMS migraines happen in the week or two before your period and ease once bleeding starts. A follicular phase migraine follows a different hormone drop, starting with or after your period, so you can have one pattern without the other. Why do follicular phase migraines ease as the cycle goes on? + Follicular phase migraines usually ease because estrogen stops falling and starts climbing steadily toward ovulation. Once estrogen is rising rather than dropping, the hormone shift that seems to trigger these migraines is no longer happening, so the pain tends to fade within the phase. Does birth control change follicular phase migraines? + Some hormonal contraceptives change how much estrogen rises and falls across your cycle, which can shift how often migraines happen in the follicular phase. A doctor can walk through whether a change makes sense for your pattern and health history. How many cycles should you track before you trust the pattern? + Two to three full cycles usually give you enough days to see whether migraines reliably cluster around the start of your period or show up at unpredictable points. A shorter log can mislead you, since one cycle can look different from the next. ## Sources - 1. [Higher Circulating Cortisol in the Follicular vs. Luteal Phase of the Menstrual Cycle: A Meta-Analysis](https://doi.org/10.3389/fendo.2020.00311), Frontiers in endocrinology, 2020 Ask AI about this page Copy prompt ChatGPT ↗ Claude ↗ Perplexity ↗ Google AI Mode ↗ Grok ↗ On this page - [Why do you get migraines in the follicular phase?](#why-do-you-get-migraines-in-the-follicular-phase) - [What helps right now?](#what-helps-right-now) - [When in the follicular phase is it worst?](#when-in-the-follicular-phase-is-it-worst) - [Is it PMS or something else?](#is-it-pms-or-something-else) - [How do you track it across cycles?](#how-do-you-track-it-across-cycles) - [What does the research say?](#what-does-the-research-say) - [Research](#research) - [Questions](#faq) Niyora PMS & PMDD support For the hard moment before your period. Private, no account. [Get it on iPhone](https://apps.apple.com/app/niyora-pms-emotions/id6764561688) ## Keep reading Condition The luteal phase: what's happening in your body and mood Cycle guide The 4 phases of the menstrual cycle Cycle guide The follicular phase: what happens and how it feels Cycle guide Follicular phase symptoms: what to expect Cycle guide Mood in the follicular phase: why it happens Cycle guide Follicular phase hormone levels and what they mean Cycle guide How your menstrual cycle affects your mood