At a glance
- You don't need to explain PMDD to take a sick day, a brief text like 'not feeling well' is enough.
- Leaving your desk and waiting ten minutes before responding can stop a hard moment from getting worse.
- If it's a monthly pattern, tracking two cycles helps you move demanding work to your better weeks.
- Workplace accommodations are worth asking for once sick days alone aren't covering it.
- See a doctor if PMDD costs you a week of work every month, with two months of daily notes in hand.
What should I do right now, at work?
If you're reading this at your desk, start by moving somewhere private. A bathroom stall, your car in the parking lot, an empty stairwell, anywhere you're not being watched while you decide what to do next.
PMDD symptoms in the final week before your period can bring sharp irritability, tears that come out of nowhere, or exhaustion that makes sitting through one more meeting feel impossible. None of that means you're overreacting. PMDD is a documented diagnosis in the DSM-5-TR, a different reaction to a normal hormone shift, not a character flaw.
Text your manager rather than calling. A short message is enough: 'Not feeling well today, I need to take a sick day.' You don't owe a diagnosis or an explanation while you're still deciding whether you can function.
If you can finish the morning but not the afternoon, say that instead. 'I can get through my 10am but need to leave after' buys you time without requiring a full day off you don't need.
Don't answer anything that upset you yet, an email, a message, a comment from earlier. Close it, mute the thread, and give yourself ten minutes before you decide what, if anything, needs a reply right now.
Where this sits in your cycle
Luteal phase Days 15 to 28
How do I get through the next hour?
Once you've stepped away, the next hour is about calming your body, not making big decisions. Splash cold water on your wrists or the back of your neck. It sounds small, but it can bring a racing heart rate down fast when you're flooded.
Breathing out for longer than you breathe in, six counts out and four counts in, for two or three minutes, works the same way. It tells your body the alarm has passed before your mind catches up.
Say the fact out loud or to yourself: 'This is the week before my period, and my brain reacts to the hormone shift more than most people's does.' Naming it doesn't erase how you feel, but it can stop the pattern where you blame yourself for being too much.
If a fight, a comment, or a deadline review is replaying in your head, write down what happened before you respond to anyone. Niyora is a PMS and PMDD support app. Its Moon feature lets you write what happened, see it from another angle, and draft a reply you can hold for 20 minutes instead of sending right away.
Give yourself permission to do nothing productive for this hour. Getting through it is the task, not fixing everything else.
What should I tell my manager?
You don't have to name PMDD to take a sick day. 'I'm not feeling well' or 'I have a migraine' covers most one-off absences, and most managers don't ask for more than that.
If this happens most months, a pattern might serve you better than repeating a vague excuse each time. You could say: 'I have a health condition that flares in a predictable pattern once a month. I'll give advance notice when I can, and I'll make up the time.' That's true without requiring you to explain mood swings or tears at your desk.
If you snapped at a coworker or cried in a meeting before you left, you don't need to apologize for being human. A short, honest follow-up usually helps more than over-apologizing: 'I wasn't feeling like myself yesterday, I'm doing better today.' Snapped at a coworker before your period? has more on handling that conversation.
Whether to use the word PMDD at all is your call. Some managers respond well to a clear medical term, others hear 'hormones' and stop listening. You know which is more likely where you work.
How do I plan work around my cycle?
If this is a monthly pattern, planning around it beats reacting to it each time. Track your cycle for two months, noting which days bring fatigue, fog, or irritability, so you can see your own pattern instead of guessing after the fact.
Once you know your likely hard week, move what you can off it. Schedule presentations, performance reviews, or big asks for the first half of your cycle, when estrogen is rising and most people feel more capable. Save the lower-stakes tasks, routine emails, quiet admin work, for the week before your period.
Fatigue, more than mood, is often what makes work hardest. PMDD fatigue explains why exhaustion gets worse in this phase and what actually helps with it.
If you know a demanding week is coming and moving it isn't an option, getting through a demanding work week has a day-by-day plan for managing it instead of calling in sick.
None of this guarantees you won't need a sick day some months. It just shrinks how often you're caught off guard by one.
When should I ask for accommodations?
If this happens every month and sick days alone aren't covering it, it may be time to ask for something more consistent. PMDD affects about 1.6% of women and girls on a confirmed diagnosis, and about 3.2% on a provisional one (Reilly et al., 2024, Journal of Affective Disorders, pubmed.ncbi.nlm.nih.gov/38199397). It's a recognized diagnosis in the DSM-5-TR, not something you're managing badly.
Accommodations can look like flexible start times during your hardest week, the option to work from home on bad days, or using leave you've already earned without justifying it each time. PMDD workplace accommodations walks through how to ask and what's reasonable to request.
Track two months of daily symptoms before that conversation, whether with a doctor or on your own. It makes the pattern clear to anyone you ask, including yourself, and it's the same record a doctor would want to see.
From the research library
Research on mood swings
116 studies in the library look at mood swings in PMS and PMDD. They were published from 1971 to 2026, and each one is summarised in plain English.
116
studies, 1971 to 2026
How strong the studies are
- Strong study design
- 6
- Moderate study design
- 41
- Early or limited evidence
- 69
Study, 2026
How do women with PMDD process emotions differently in their brains?
Women with PMDD show increased activity in emotion-processing brain networks, especially during the luteal phase, and this baseline difference even appears in the follicular phase and relates to symptom severity.
Strong study design
Case-control study, 2026
Do women with PMS handle emotions differently at different times of the cycle?
Yes. Women with PMS tend to use emotion coping strategies that make symptoms worse (like dwelling on negative thoughts) and fewer strategies that help (like accepting difficult thoughts). These patterns change across the menstrual cycle.
Strong study design
Systematic review, 2025
Do people with PMDD and severe PMS have difficulties with emotion regulation?
People with PMDD and severe PMS may have difficulties identifying emotions and choosing how to handle them, particularly using rumination (replaying upset thoughts) in the late-luteal phase. Evidence remains limited.
Strong study design
Systematic review, 2025
Does teaching adolescent girls about their menstrual cycle and health help reduce period pain and PMS?
Yes. A systematic review of five good-quality studies shows that psychoeducation (structured teaching) significantly reduced period pain and PMS symptoms and improved emotional wellbeing in adolescent girls.
Strong study design
Randomised trial, 2007
Does paroxetine work better if taken daily or just during your luteal phase for PMDD?
Daily paroxetine had an 85% response rate and was most effective overall, while luteal-phase-only paroxetine worked equally well for irritability and mood swings but was weaker for depression and physical symptoms. This well-designed study provides reliable results.
Strong study design
Survey study, 1994
How many different ways do researchers measure PMS in clinical trials?
Researchers use many different measurement tools across studies. 65 different questionnaires were found in 350 trials of PMS drugs, making it hard to compare whether treatments actually work.
Strong study design
Questions people ask
Do I have to tell my manager I have PMDD?+
No. Calling in sick for PMDD doesn't require naming the diagnosis. A short message like 'I'm not feeling well today' covers most one-off absences. If the pattern repeats monthly, some people choose to mention a general health condition that flares predictably, without ever using the word PMDD.
What should I text my manager when I call in sick for PMDD?+
When calling in sick for PMDD, keep your text to your manager short and factual: 'Not feeling well, taking a sick day, will follow up tomorrow.' You don't owe your manager details in the moment, and a text avoids a conversation you might not handle calmly while symptoms are active.
Is it normal to need to call in sick before my period?+
PMDD affects about 1.6% of women and girls on a confirmed diagnosis, and about 3.2% on a provisional one (Reilly et al., 2024, Journal of Affective Disorders, pubmed.ncbi.nlm.nih.gov/38199397). Severe symptoms in the final week before a period can genuinely make work hard to manage, and needing to call in sometimes doesn't mean you're failing at your job.
Can I get workplace accommodations for PMDD?+
Some workplaces offer flexibility once a pattern is documented, like remote days during your hardest week or advance notice for leave. Tracking two months of daily symptoms makes the case clearer. PMDD workplace accommodations covers what's reasonable to ask for and how to start that conversation.
What if I snapped at a coworker before leaving?+
A short, honest follow-up usually helps more than over-apologizing: 'I wasn't feeling like myself yesterday, I'm doing better today.' You don't need to over-explain. If it keeps happening, snapping at a coworker before your period has more on handling that moment and the conversation after.
Sources
- 1.Association between premenstrual dysphoric disorder and perinatal depression: a systematic review, Archives of women's mental health, 2022