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Quick answer
PMDD (premenstrual dysphoric disorder) is a severe, cyclical reaction to normal hormone changes that causes intense mood symptoms such as depression, anxiety, irritability or feeling out of control in the week or two before a period, easing once it starts. It is more severe than PMS. Diagnosis usually needs daily symptom tracking over at least two cycles.
- PMDD is a severe, cyclical mood condition, not “bad PMS you should push through”.
- It is linked to sensitivity to normal hormone changes, not abnormal levels.
- Daily tracking over two cycles is the key to diagnosis.
- Effective treatments exist, including SSRIs, certain pills and therapy.
Key facts
- Symptoms start in the luteal phase and ease within a few days of the period starting.
- Diagnosis usually relies on daily symptom ratings over at least two cycles.
- Treatments a doctor may discuss include SSRIs, hormonal options and CBT (NHS).
Imagine feeling like yourself for two weeks, then like someone has swapped your brain for a storm cloud, then back again, every single month. For people with PMDD, that is not an exaggeration. It is a recognised medical condition, and it deserves proper care.
What is the difference between PMDD and PMS?
PMDD can include the physical symptoms of PMS, but the emotional ones are much more intense and can seriously disrupt work, study and relationships. Symptoms usually start 10 to 14 days before a period and ease within a few days of bleeding starting.
- Irritability, anger or feeling on edge
- Anxiety or panic attacks
- Deep low mood, hopelessness or suicidal thoughts
- Trouble concentrating, fatigue and low energy
- Food cravings, binge eating and sleep problems
- Feeling overwhelmed or out of control
What causes PMDD?
The cause is not fully understood, but the NHS links it to being very sensitive to normal hormone changes, plus some inherited differences in genes. Your hormones are not “wrong”; your brain responds to their shifts more strongly. Hormone blood tests are usually normal, so they are not used to diagnose it.
MythIf your hormone blood tests are normal, it cannot be PMDD.
PMDD is about how you respond to hormone changes, not abnormal levels. Diagnosis is based on tracking symptoms across cycles.
Is it PMDD or something that gets worse before my period?
Depression and anxiety are common. If your low mood or anxiety is there all month and just gets worse before your period, that is called premenstrual exacerbation, and it needs treatment all month. With PMDD, symptoms mostly disappear in the week after your period. Daily tracking is the best way to tell them apart, and some people have both.
How is PMDD treated?
There is no single best option, so it is worth discussing the choices with a GP or a specialist:
- SSRI antidepressants, taken all month or only in the luteal phase. The RCOG lists them as a first-choice treatment for severe PMS.
- Certain combined pills with a progestogen called drospirenone, sometimes taken continuously. The RCOG also lists these as first-choice.
- CBT and other talking therapies
- Regular exercise, sleep and stress management, and cutting back on alcohol and caffeine
- Specialist referral if first-line options do not help. Medicines that temporarily switch off your ovaries (GnRH analogues) are sometimes used under specialist care. Surgery to remove the ovaries is a last resort, and only after a trial.
- Mid-cycle at ovulation
- Within a few days of the period starting
- They never ease
Show the answer
B. Within a few days of the period starting
PMDD is cyclical: symptoms build in the luteal phase and lift within a few days of bleeding starting.
Questions people ask
Is there a PMDD test?
There is no blood test. Doctors look for a pattern of severe mood symptoms in the days before your period that ease once it starts, usually confirmed by tracking symptoms daily for two cycles. A free self-check can help you decide whether to speak to a GP, but it cannot diagnose PMDD.
How do I track symptoms for PMDD?
Rate your mood and symptoms every day, including on good days, for at least two cycles, and note when your period starts. A tracker that shows symptoms by cycle day makes the pattern easy to show a doctor.
What should I do if PMDD makes me feel unsafe?
If you are having thoughts of harming yourself, get help now: in the UK call 999 or Samaritans on 116 123; in the US call or text 988. You do not have to wait for your period to pass.
Sources
Written by the Splash teamSources checked
This is general information, not medical advice. Splash can’t diagnose. If you’re worried, talk to a GP, pharmacist or sexual health clinic. In an emergency call 999 (UK) or 911 (US). How we write and check articles.