--- title: Can PMDD cause seizures? PMDD and epilepsy explained description: PMDD doesn't cause seizures, but it shares hormone-sensitive brain pathways with epilepsy. Learn how catamenial epilepsy and PMDD overlap and what helps. url: https://niyora.com/conditions/pmdd-and-epilepsy/ --- - [Niyora](https://niyora.com/) - [Conditions](https://niyora.com/conditions/) - Can PMDD cause seizures? How PMDD and epilepsy interact PMDD and epilepsy # Can PMDD cause seizures? How PMDD and epilepsy interact PMDD doesn't cause seizures, and epilepsy doesn't cause PMDD. They're separate diagnoses, but both are sensitive to the same hormone shifts, especially falling progesterone before a period. Seizures can genuinely worsen around the cycle in epilepsy, a pattern called catamenial epilepsy, and that's worth tracking alongside any mood symptoms. Updated 14 October 2026 Niyora editorial Moderate evidence Side by side What it is PMDD A diagnosed mood disorder tied to the luteal phase (DSM-5-TR, ICD-11) Catamenial epilepsy Seizures that cluster around specific cycle days in someone who already has epilepsy ## At a glance - PMDD doesn't cause seizures; they share hormone-sensitive brain pathways with epilepsy. - Catamenial epilepsy, seizures clustered by cycle day, may affect around 40% of women with epilepsy (Cochrane review, 2021). - Falling progesterone before a period lowers allopregnanolone, a calming brain chemical tied to seizure risk and PMDD. - A small pilot study found the anti-seizure drug levetiracetam eased PMDD symptoms in most participants, but it's not an established treatment. - Tracking both on one calendar helps your neurologist and gynecologist coordinate care. ## Strength of evidence Moderate evidence - None - Limited - Mixed - Moderate - Strong Catamenial epilepsy prevalence and treatment uncertainty come from a 2021 Cochrane systematic review. The shared progesterone and allopregnanolone mechanism is supported by review and pilot-level evidence. No study has yet measured combined PMDD and epilepsy prevalence directly. | Compared on | PMDD | Catamenial epilepsy | | --- | --- | --- | | What it is | A diagnosed mood disorder tied to the luteal phase (DSM-5-TR, ICD-11) | Seizures that cluster around specific cycle days in someone who already has epilepsy | | Timing | Mood symptoms in the week before a period, easing within days of bleeding starting | Perimenstrual (C1), ovulatory (C2), or luteal (C3) seizure clusters | | Mechanism | Brain's unusual sensitivity to normal estrogen and progesterone shifts | Falling progesterone lowers a calming brain chemical, reducing the seizure threshold | | How it's confirmed | Daily symptom ratings over at least two cycles | A seizure diary matched to cycle days, reviewed by a neurologist | | Typical treatment | SSRIs (sometimes luteal-phase only), some hormonal contraceptives, CBT | Pulsed progesterone, clobazam, acetazolamide, or hormone-suppressing therapy | | Who confirms it | GP, gynecologist, or psychiatrist | Neurologist | ## How are PMDD and epilepsy connected? PMDD doesn't cause seizures, and epilepsy doesn't cause PMDD. They're separate diagnoses, but both are shaped by the same hormone swings that happen every cycle. Progesterone rises after ovulation and falls sharply before a period. As it falls, so does allopregnanolone, a byproduct of progesterone that normally calms brain cells by boosting an inhibitory signal called GABA. When that calming signal drops, some brains become more reactive, whether that shows up as mood symptoms or a lower seizure threshold (Seizure, 2018; Frontiers in Neuroendocrinology, 2023). A 2023 scoping review in Frontiers in Neuroendocrinology looked at PMDD, menstrual migraine, and catamenial epilepsy together and found a shared hormone-sensitive mechanism across all three, even though the three fields rarely compare notes. **PMDD is a different reaction to normal hormone changes, not a sign of abnormal hormone levels** (Schmidt et al., 1998, NEJM; Dubey et al., 2017, Molecular Psychiatry). Catamenial epilepsy research points to something similar: hormone levels are normal, yet some brains react to the usual drop more strongly than others (Seizure, 2018). A gene called GABRB2, which shapes how GABA receptors work, has been linked to both epilepsy and PMDD in a 2022 review, along with several other brain conditions (Gene, 2022). Where this sits in your cycle Luteal phase Days 15 to 28 Day 1 Ovulation Day 28 ## Does epilepsy get worse before your period? For many women with epilepsy, yes. Doctors call this pattern catamenial epilepsy, seizures that cluster around specific days of the cycle rather than occurring at random. A 2021 Cochrane review found catamenial epilepsy may affect around 40% of women with epilepsy. Researchers describe three patterns: - **C1, perimenstrual**: seizures cluster right before or during the period, when progesterone has dropped. - **C2, ovulatory**: seizures cluster around ovulation, when estrogen surges. - **C3, luteal**: seizures cluster through the second half of the cycle, when progesterone stays low. The C1 and C3 patterns are tied to falling progesterone, which reduces the brain's inhibitory signaling and makes seizures more likely. The C2 pattern is tied to the estrogen surge around ovulation, though researchers aren't yet sure exactly why that surge raises risk (Cochrane review, 2021). If your seizures seem to follow one of these patterns, that's worth raising with your neurologist specifically, since it changes which treatments might help. Right now If both are flaring this week - 1 If you notice a seizure aura or warning sign, get to a safe, flat space and tell someone nearby. - 2 If rage or tears take over, leave the room and set a timer for 20 minutes before you respond. - 3 Write down what happened in plain words while it's fresh, for your own records and your doctor's. - 4 If seizures are becoming more frequent around your period, call your neurologist before your next scheduled visit. Niyora walks you through this when it happens: - Calm down - - See it another way - - Choose what to say ## How common is it to have both? There's no reliable number yet for how many women have both PMDD and epilepsy at the same time. Research on each condition tends to happen in separate fields, so that overlap hasn't been measured directly. What researchers do know is that the two conditions share biology. Both are sensitive to the drop in progesterone and its calming metabolite, allopregnanolone, before a period. One 2009 study found women with PMDD reached lower blood allopregnanolone levels than women without PMDD after the same injected dose, though the hormone had no effect on either group's startle response (Pharmacology, Biochemistry and Behavior, 2009). Glutamate, the brain's main excitatory chemical, is another shared thread. A 2023 review described how sex hormones modulate glutamate signaling in both epilepsy and PMDD, among other conditions, which may help explain why mood symptoms and seizure changes can cluster around the same days (Neuroendocrinology, 2023). If you live with epilepsy and also notice a pattern of mood symptoms in the week before your period, that pattern is worth tracking rather than assuming it's unrelated. What the research says No study in this research has measured how many women have both PMDD and epilepsy together. What exists is evidence that the two conditions can share the same progesterone and allopregnanolone pathway, not a combined prevalence figure. ## How do treatments interact? Treatment gets complicated because the same hormone, progesterone, is involved in both conditions, but not always in the same direction. For catamenial epilepsy, the 2021 Cochrane review found doctors have tried pulsed progesterone, anti-seizure drugs like clobazam or acetazolamide taken only around vulnerable days, and complete suppression of the cycle with medroxyprogesterone or GnRH analogues. The review found genuine uncertainty about which option works best and when in the cycle to start it. | Option | What it does | Evidence strength | | --- | --- | --- | | Pulsed progesterone | Raises progesterone (and allopregnanolone) during vulnerable days | Tested in trials; benefits seen most in women with clear premenstrual seizure worsening | | Clobazam or acetazolamide (pulsed) | Anti-seizure drugs used only around high-risk days | Common practice, but head-to-head evidence is limited | | Hormone-suppressing therapy (Depo-Provera, GnRH analogues) | Stops the cycle to remove the hormone swing | Used when periods are irregular; affects fertility and bone health | | SSRIs (sometimes luteal-phase only) | Standard PMDD treatment, unrelated to seizure control | Established for PMDD; a doctor manages dosing | | Levetiracetam | Anti-seizure drug, also tested in a small PMDD pilot | Six of seven participants improved, but the study was open-label with no placebo group | If you take anti-seizure medication and also have PMDD symptoms, don't adjust either on your own. A neurologist and a gynecologist or psychiatrist may need to coordinate, since a hormonal treatment aimed at one condition can shift the other. ## What helps in the days before your period? When seizure risk and PMDD symptoms rise in the same week, safety comes first. Right now, if you're in a hard moment: - If you notice a seizure aura or warning sign, get to a safe, flat space and let someone nearby know. - If you're flooded with anger or tears, leave the situation and set a timer for 20 minutes before you respond to anyone. - Write down what happened as soon as you can, in plain words, so you're not relying on memory later when you talk to your doctor. Niyora is a PMS and PMDD support app. If you want somewhere to put the fight or the heavy moment before you respond, Niyora's Moon lets you write what happened, see it from another angle, and draft a reply you can hold onto for 20 minutes. None of this replaces seizure safety planning with your neurologist. When to see a doctor If seizures are becoming more frequent, or your mood symptoms take a week of every month, or you have thoughts of hurting yourself, call your neurologist or GP now and bring two months of daily notes. ## How do you track both? The clearest way to see whether PMDD and seizure activity line up is to track them on the same calendar. For PMDD, daily ratings over at least two cycles are how the diagnosis is confirmed. The [Daily Record of Severity of Problems (DRSP) chart](https://niyora.com/tools/drsp-chart/) is the standard tool for this, and [how to get a PMDD diagnosis](https://niyora.com/care/how-to-get-diagnosed/) walks through the process. For seizures, keep a simple log alongside it: - Date and time of each seizure - What it looked like, including type and any warning signs - Where you are in your cycle, such as day count or perimenstrual, ovulatory, or luteal Bring both logs to appointments. A neurologist deciding on catamenial-pattern treatment needs to see which of the three patterns your seizures follow, and a gynecologist or psychiatrist assessing PMDD needs the DRSP data separately. If your mood symptoms fit the pattern described in [PMDD, explained](https://niyora.com/pmdd/), or you're dealing with an existing condition that flares before your period rather than a new one, [PME: when your period makes another condition worse](https://niyora.com/pme/) explains that distinction. A [PMDD specialist](https://niyora.com/care/pmdd-specialist/) can help coordinate care if hormone-based treatment is on the table for either condition. From the research library ## Research on epilepsy 54 studies in the library look at epilepsy in PMS and PMDD. They were published from 1962 to 2025, and each one has a short summary of what was tested and found. 54 studies, 1962 to 2025 How strong the studies are Strong study design 2 Moderate study design 9 Early or limited evidence 43 - [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/) - [Review, 2003How do menstrual cycle hormones affect the brain and cause mood disorders like PMDD?A hormone called allopregnanolone acts on brain receptors. Changes in this hormone during the cycle may cause mood and behavioral symptoms in up to 20% of people through three mechanisms: direct effects, building tolerance, and withdrawal effects.Strong study design](https://niyora.com/research/papers/pathogenesis-in-menstrual-cycle-linked-cns-disorders-2003/) - [Cohort study, 2025Do women with epilepsy show different brain patterns during different phases of their menstrual cycle?Yes. Women with epilepsy showed abnormal changes in brain activity during the perimenstrual phase compared to women without epilepsy, suggesting increased brain excitation during this time.Moderate study design](https://niyora.com/research/papers/females-with-epilepsy-show-abnormal-changes-to-perimenstrual-sensory-induced-2025/) - [Study, 2025How can researchers better track hormone changes throughout the menstrual cycle?Researchers created a new method called PACTS that better tracks how hormones change across your entire menstrual cycle, making patterns easier to spot and potentially improving diagnosis.Moderate study design](https://niyora.com/research/papers/how-to-study-the-menstrual-cycle-as-a-continuous-variable-implementing-phase-2025/) - [Systematic review, 2019Do lithium and valproate levels change during the menstrual cycle?In women with bipolar disorder, lithium levels decreased during the luteal phase (before the period) despite stable doses, linked to worsening mood symptoms. In healthy women, lithium levels were not affected by the menstrual cycle.Moderate study design](https://niyora.com/research/papers/lithium-and-valproate-serum-level-fluctuations-within-the-menstrual-cycle-a-2019/) - [Review, 2010Can neurosteroids help with anxiety and brain disorders?The review suggests neurosteroids might help with anxiety, epilepsy, and depression, but clinical evidence is limited.Moderate study design](https://niyora.com/research/papers/neurosteroids-endogenous-role-in-the-human-brain-and-therapeutic-potentials-2010/) [See all 54 studies on epilepsy](https://niyora.com/research/topics/comorbidity-epilepsy/) ## Questions people ask Can PMDD cause seizures? + PMDD does not cause seizures. The two conditions are diagnosed separately, but a 2023 scoping review found they share some of the same hormone-sensitive brain pathways. If you have both PMDD and epilepsy, that's two separate sensitivities overlapping, not PMDD triggering seizure activity. What is catamenial epilepsy? + Catamenial epilepsy describes seizures that cluster around specific days of the menstrual cycle, such as just before or during a period, at ovulation, or through the luteal phase. It affects around 40% of women with epilepsy, according to a 2021 Cochrane review. Does falling progesterone affect seizures and PMDD the same way? + Falling progesterone before a period reduces allopregnanolone, a brain chemical that normally calms nerve cells. Lower allopregnanolone has been linked to both increased seizure risk and differences seen in PMDD, though the two conditions are still tracked and treated separately. Can anti-seizure medication help PMDD? + A small pilot study found the anti-seizure drug levetiracetam reduced PMDD symptom scores in six of seven participants. The study was open-label with no placebo group, so it's an early signal rather than an established PMDD treatment. Any medication change is a decision for your doctor. Should I track my periods if I have epilepsy? + Tracking seizure days alongside your menstrual cycle can show whether seizures cluster perimenstrually, at ovulation, or during the luteal phase. That pattern is the first thing a neurologist needs before considering catamenial-pattern treatment, so bring a few logged months to your appointment. ## Sources - 1. [Treatments for seizures in catamenial (menstrual-related) epilepsy](https://doi.org/10.1002/14651858.cd013225.pub3), The Cochrane database of systematic reviews, 2021 - 2. [A scoping review of hormonal clinical trials in menstrual cycle-related brain disorders: Studies in premenstrual mood disorder, menstrual migraine, and catamenial epilepsy](https://doi.org/10.1016/j.yfrne.2023.101098), Frontiers in neuroendocrinology, 2023 - 3. [Progesterone, 5a-dihydropogesterone and allopregnanolone's effects on seizures: A review of animal and clinical studies](https://doi.org/10.1016/j.seizure.2018.10.012), Seizure, 2018 - 4. [Allopregnanolone has no effect on startle response and prepulse inhibition of startle response in patients with premenstrual dysphoric disorder or healthy controls](https://doi.org/10.1016/j.pbb.2009.02.014), Pharmacology, biochemistry, and behavior, 2009 - 5. [Levetiracetam for treatment of premenstrual dysphoric disorder: a pilot, open-label study](https://doi.org/10.1007/s00737-008-0014-9), Archives of women's mental health, 2008 - 6. [GABRB2, a key player in neuropsychiatric disorders and beyond](https://doi.org/10.1016/j.gene.2021.146021), Gene, 2022 - 7. [Sex Hormones, Neurosteroids, and Glutamatergic Neurotransmission: A Review of the Literature](https://doi.org/10.1159/000531148), Neuroendocrinology, 2023 Ask AI about this page Copy prompt ChatGPT ↗ Claude ↗ Perplexity ↗ Google AI Mode ↗ Grok ↗ On this page - [How are PMDD and epilepsy connected?](#how-are-pmdd-and-epilepsy-connected) - [Does epilepsy get worse before your period?](#does-epilepsy-get-worse-before-your-period) - [How common is it to have both?](#how-common-is-it-to-have-both) - [How do treatments interact?](#how-do-treatments-interact) - [What helps in the days before your period?](#what-helps-in-the-days-before-your-period) - [How do you track both?](#how-do-you-track-both) - [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 PMDD (premenstrual dysphoric disorder), explained Condition PME: when your period makes another condition worse Article PMS vs PMDD: the difference, and when to see a doctor Guide Take the two-minute check Care guide How to get a PMDD diagnosis Care guide Finding a PMDD specialist