Content note: this article discusses suicide and self-harm. If you need support right now, call Lifeline on 13 11 14 or 000 in an emergency.
Premenstrual dysphoric disorder (PMDD) is a severe mood disorder linked to the hormonal changes of the menstrual cycle. In the week or two before a period, people with PMDD can experience depression and anxiety intense enough to disrupt work and relationships. These symptoms usually ease within a few days of bleeding starting. Current research suggests PMDD stems from an unusual sensitivity to normal hormone changes, rather than from abnormal hormone levels.
Because the symptoms come and go, PMDD is often mistaken for bad PMS. That misunderstanding has serious consequences, because PMDD carries a high risk of suicide.
A 2026 report from researchers in Scotland helps explain why. The team includes Professor Rory O'Connor, who developed the Integrated Motivational-Volitional (IMV) model, a leading framework for understanding how suicidal thoughts form and turn into action. The researchers adapted the model to reflect how PMDD affects people across the menstrual cycle. Their first finding concerns the link between PMDD and suicide risk.
How common is suicide risk in PMDD?
PMDD affects around 3 to 8 per cent of women and people assigned female at birth, according to a 2024 meta-analysis cited in the report. Within this group, suicidal thoughts and behaviour are common. A 2022 global study of 599 people with PMDD found that about one in three had attempted suicide at least once.
That figure needs some context. Participants were recruited online and reported a diagnosis confirmed through daily symptom tracking, so they may not represent everyone with PMDD. Even so, the figure sits far above the rate in the general population.
The scale of this risk is why suicide and self-harm prevention ranks among the top five priorities in the UK PMDD Research Agenda. Behind the figures are long personal histories. Looking back on their teenage years, one person with PMDD reflected on ‘how close I can imagine we've all been to just not being here anymore’.
A risk that rises and falls with the cycle
What sets PMDD apart from many other mental health conditions is the timing of its risk. Symptoms build during the luteal phase, the second half of the cycle between ovulation and a period. The report notes that the risk of hospitalisation for suicidal behaviour increases during this phase.
This pattern repeats month after month. People with PMDD described self-harm and suicidal thoughts or attempts that returned each cycle, often beginning in adolescence. Many said they felt ‘out of control’ at their worst. The researchers found that suicidal behaviour in PMDD is more often driven by impulsivity than by planning. When a crisis can escalate quickly, preparation needs to happen before the luteal phase begins.
Over time, the repetition wears people down. Repeated dismissal or misdiagnosis leaves many feeling trapped in what participants called a monthly ‘vicious cycle’. Most live with it for years, and some for as long as 40, which builds a cumulative exhaustion that adds to the risk.
Hormonal change of any kind can make things worse. People with PMDD react strongly to ordinary hormone shifts, so starting or stopping a hormonal treatment can deepen a crisis.
The link to the cycle often becomes clear only in hindsight. Participants reported that their period frequently began in the hours after a suicidal crisis, yet no health professional had ever asked them about it.
PMDD, co-occurring conditions and neurodivergence
PMDD often overlaps with other conditions. The report found clear links between PMDD and co-occurring mental health conditions, and between PMDD and neurodivergence. It points to research on ADHD in women with PMDD as evidence of a strong neurodivergence connection. In the adapted model, neurodivergence sits among the predisposing factors that shape vulnerability long before a crisis.
These overlaps can make PMDD harder to see. The report found that awareness of PMDD is low among health professionals. When someone already has another diagnosis, such as ADHD or depression, a luteal-phase crisis may be attributed to that diagnosis alone, and the hormonal pattern goes unexamined.
What this means in practice
Taken together, these findings point to one practical message: risk in PMDD follows a rhythm, and support works best when it follows that rhythm too.
If you live with PMDD
Tracking your mood alongside your cycle turns a vague sense of ‘bad weeks’ into a pattern you and your clinician can work with. The report found that asking how often symptoms occur can reveal patterns related to PMDD.
Once you know your high-risk window, you can plan for it. A safety plan written during your well weeks, and shared with someone you trust, will be ready before the luteal phase arrives.
If you support someone or work in health care
Partners and family can help by learning the pattern. During a good week, agree on how you will check in once the luteal phase begins.
For health professionals, the starting point is to ask about the menstrual cycle in any conversation about mood or suicidal thoughts. The report warns that tools such as the PHQ-9 often miss PMDD's cyclical pattern. Their accuracy also depends on when in the cycle they are completed.
Timing matters for appointments too. People with PMDD are usually well outside the luteal phase, so an appointment in a good week can look reassuring when the risk is only weeks away. Explore what happened before and after any crisis, including where it fell in the cycle. Treat hormonal changes as periods of heightened risk that deserve closer follow-up.
Finding support
If PMDD is affecting your safety, you deserve support that understands the cycle. Progressive Therapeutic Counselling offers online counselling across Australia for people living with PMDD and the partners who support them.
If you need to talk to someone now:
Lifeline: 13 11 14 (24/7), or text 0477 13 11 14
Suicide Call Back Service: 1300 659 467 (24/7)
13YARN (for Aboriginal and Torres Strait Islander people): 13 92 76 (24/7)
Beyond Blue: 1300 22 4636
Kids Helpline (ages 5 to 25): 1800 55 1800 (24/7)
Emergency: 000
The International Association for Premenstrual Disorders (IAPMD) offers PMDD-specific peer support and resources.
Read the original report
Matthews L, Riddell J, Cleare S, Harkess-Murphy E, O'Connor RC (2026). The Applied IMV Model of Suicidal Behaviour for Premenstrual Dysphoric Disorder (IMV-PMDD). University of the West of Scotland.