Co-authored by Professor Jayashri Kulkarni AM with Dr Kelly Teagle.
Premenstrual Dysphoric Disorder (PMDD) is a severe, hormone-related mood disorder linked to the menstrual cycle.
While many women experience premenstrual symptoms, PMDD is far more intense and can significantly impact emotional wellbeing, relationships, and daily functioning. It’s not “just bad PMS”; PMDD is a brain condition where there is neurobiological sensitivity to normal hormonal fluctuations, particularly in the second half of the cycle (the luteal phase) when estrogen levels are low.
To help better understand this complex condition, we have answered some of the most commonly asked questions:
How is PMDD different from PMS?
PMS is common and usually mild with mainly physical symptoms such as bloating, headaches and mild irritability. PMDD includes severe mood symptoms like depression, anxiety, ‘brain fog’ and irritability that can feel overwhelming or disabling.
What are the symptoms of PMDD?
PMDD symptoms occur cyclically in the luteal phase (1-2 weeks before menstruation) and resolve shortly after the period starts.
Emotional Symptoms:
- Anger, irritability, or rage.
- Depression, hopelessness, despair.
- Anxiety, tension, feeling on edge, or panic attacks.
- Sudden mood swings or feeling out of control.
- Suicidal thoughts and ideation
Cognitive and Energy Changes:
- Difficulty concentrating or “brain fog”.
- Fatigue, low energy, or lack of interest in activities/relationships.
Behavioural and Physical Symptoms:
- Appetite changes, cravings, overeating.
- Sleep disturbances (too much or too little).
- Bloating, breast tenderness, cramping, muscle/joint pain.
What causes PMDD?
Current research suggests PMDD is caused by an abnormal brain sensitivity to normal cyclical fluctuations in estrogen and progesterone at ovulation.
- Hormone sensitivity: After ovulation, drops in estrogen and changes in progesterone affect a brain chemical called ALLO, which influences serotonin and GABA – systems that control mood and calmness. In some people, this causes mood swings or emotional changes.
- Serotonin dysfunction: Women with PMDD show altered serotonin processing (e.g., lower levels or blunted response) specifically in the luteal phase, worsening emotional symptoms.
- Genetic factors: PMDD can run in families, and research suggests some women have genes that make them more sensitive to normal hormone changes. A group of genes identified in 2018 affects how the body responds to hormones like estrogen, meaning the brain may react more strongly to these shifts. As estrogen levels rise and fall across the menstrual cycle, this increased sensitivity can trigger mood changes by influencing brain chemistry and emotional regulation.
Is PMDD just stress or is it a mental illness?
PMDD is classified as a serious mental health disorder in the DSM-5 due to its severe mood and cognitive symptoms. It is a neurobiological (brain) condition in which the sufferer has greater sensitivity to normal hormone fluctuations.
Role of Trauma:
- Trauma – past or present – may trigger PMDD in those with a genetic susceptibility, increasing the brain’s sensitivity to hormonal shifts. This can disrupt neurotransmitters like serotonin, dopamine, and glutamate, driving symptoms. As estrogen has a protective effect, symptoms are often controlled when levels are high but emerge when they drop in the second half of the cycle.
- PME is Premenstrual Exacerbation of a pre-existing mental illness. Premenstrual exacerbation refers to the worsening of existing conditions – such as anxiety, depression, ADHD, or PTSD – before a period. It is thought to stem from increased brain sensitivity to hormonal fluctuations, particularly the drop in estrogen in the second half of the cycle, which can intensify symptoms.
How common is PMDD?
It is estimated that between 5% to 8% of women have moderate-to-severe symptoms that can cause significant distress and functional impairment.
When do PMDD symptoms happen?
PMDD symptoms occur specifically during the luteal phase of the menstrual cycle – the 1-2 weeks after ovulation and before menstruation begins – and fully resolve within a few days of the period starting.
Symptoms typically emerge 5-11 days before menstruation (most intense 2 days prior), absent during the follicular phase (mid-cycle, days 7-14). This cyclical pattern (luteal only, post-menstruation remission) is key to diagnosis via prospective tracking.
How is PMDD diagnosed?
PMDD is diagnosed mainly through symptom pattern and timing, not blood or hormone tests. The DSM 5 classification of PMDD requires prospective daily symptom tracking over at least two full menstrual cycles, which clearly shows that symptoms worsen in the luteal phase and ease in the follicular phase.For clinical studies and an objective diagnosis, the Daily Record of Severity of Problems (DRSP) tool was developed.
In order to include PMDD in the official DSM classification system, the C-PASS system, which includes ratings with the DRSP was developed. Both of these instruments require two full cycles of daily data. If the data shows that mood symptoms markedly worsen 5-11 days before a menstrual period, improve within days of bleeding, and are absent mid-cycle – then a diagnosis of PMDD may be made – according to the DSM classification system.
However, many women do not have regular cycles and tracking menstrual cycles may not reveal an exact correlation with mood symptoms in the second half of the cycle (luteal phase). Nonetheless, if there is a history of cyclical mood changes that appear suddenly and then stop suddenly after days to weeks, PMDD must be considered.
Can PMDD be treated?
Yes, PMDD can be effectively treated and managed. The neurobiological sensitivity to normal hormone fluctuations can be modulated and sometimes hormonal life events such as pregnancy, lactation and menopause can significantly change PMDD presentations.
First-Line Treatments:
- Hormonal therapies: Because PMDD is driven by a heightened sensitivity to normal hormone changes, treatments that steady or reduce those fluctuations can help. Options like certain contraceptive pills that stop ovulation, or menopause hormone therapy using estrogen patches with body-identical progesterone, can make hormone levels more stable and ease symptoms. These treatments should be considered with your doctor, who will check they’re safe for you and monitor how you’re responding over time.
- SSRIs (antidepressants): Medications called SSRIs (a type of antidepressant), such as sertraline or citalopram, can be very effective for PMDD. They can be taken every day, or just during the second half of the menstrual cycle (about 10–14 days before your period). Like all medications, they can have side effects. Some women notice withdrawal-type symptoms when stopping, especially with longer-acting options like fluoxetine. Other possible side effects include weight changes, reduced sex drive, and difficulty reaching orgasm. For some women, these medications help a lot – but for others, symptoms may only improve partially.
- Combination of Hormone Therapy + Antidepressant: If either one of the above two options is not entirely effective, then combining therapies can be very helpful.
- Lifestyle changes: While these are mainly useful for PMS, not PMDD, it is important to maintain good physical health and restore sleep.
Other Options
- Specialist interventions: For severe PMDD that doesn’t improve with hormone treatments or SSRIs, stronger options may be considered. Medications called GnRH agonists can temporarily switch off the menstrual cycle, creating a reversible “chemical menopause,” which can help reduce symptoms. Surgery is not a treatment for PMDD, because PMDD is driven by how the brain responds to hormones – not a problem with the reproductive organs themselves. Surgical procedures are used for conditions like endometriosis or ovarian or uterine tumours, which are separate and unrelated to PMDD.
How can I get help?
Start with your GP; they may be able to diagnose and start treatment, or they may refer you to a hormone specialist or psychiatrist familiar with PMDD.
If you need to talk to someone:
Professor Jayashri KULKARNI AM graduated from Monash University medical school and became a Fellow of the Royal Australian & New Zealand College of Psychiatrists. Professor Kulkarni is nationally and internationally recognized for her pioneering hormone and trauma work in women’s mental health research She founded and directs two large psychiatry research groups. In 2021, she developed and directs Australia’s first women’s mental health hospital at Cabrini Health, Melbourne.
She was awarded the Order of Australia for her service to Psychiatry in 2018 and two of the College’s most prestigious awards in 2024, for her research and for clinical service.
