PMDD - What It Actually Is, and Why It Hits Differently When You're ADHD
This week, we are talking PMDD... properly. Because it keeps coming up in my work, and I don't think it gets the space it deserves.
Someone reached out recently who was newly diagnosed and asked...
"Where do I start trying to manage my PMDD?"
So, if you've suspected PMDD, just been told that's what you've got, or you live with people trying to make sense of it, this one's for you.
What PMDD Actually Is
PMDD stands for Premenstrual Dysphoric Disorder.
It's often described as severe PMS. Which is technically true-ish, and also almost completely unhelpful.
PMS is the thing people banter about (never ok, btw). PMDD is the thing that makes people lose two weeks of their life. Every. Single. Month.
It's estimated that around 824,000 people in the UK are living with PMDD, and that number is almost certainly higher, because so many go undiagnosed or misdiagnosed.
The symptoms show up in the luteal phase, after ovulation and before bleeding starts.
They can include...
- Intense mood swings
- Emotional dysregulation
- Intrusive thoughts
- Anxiety
- Rage
- And in the worst cases, suicidal ideation
Studies show that 34% of people with PMDD have attempted suicide, and up to 72% experience suicidal ideation.
This is not a condition to minimise.
Some of my clients describe it as a personality transplant. Like watching yourself behave in ways you don't recognise, while being fully aware it's happening. That combination (losing control while witnessing it) is its own specific kind of hell.
It's not only mood, either. Physical symptoms can include sleep disruption, bloating, joint pain, fatigue, and breast tenderness. The body and brain are not separate systems, and PMDD affects both.
One key thing clinicians look for is whether symptoms clear once bleeding starts. If you consistently feel significantly better within a day or two of your period starting, that's really important information to bring to a GP appointment.
The Science Bit (Just Mediumly Nerdy, I Promise)
Nobody knows exactly what causes PMDD. But what we do know is that the limbic system (the part of the brain in charge of mood and emotion) is packed with receptors for oestrogen and progesterone.
When hormone levels shift, the limbic system feels it first. Which is why mood and emotional symptoms tend to be louder than physical ones.
Oestrogen and progesterone also directly influence how your brain manages mood, anxiety, and sensory processing.
For most people, the body absorbs those shifts without too much drama. But for people with PMDD, the response is exaggerated...
Importantly, it's not a hormone imbalance, more a sensitivity to hormonal change.
There are two working theories for why...
- Sensitivity to a drop in oestrogen (and serotonin) that happens after ovulation.
- A reaction to rising progesterone in the luteal phase that triggers anxiety instead of calm.
Both are still being researched. But the important point is this... the hormones are doing what they're supposed to. The problem is how the brain responds to them.
If You Have ADHD, This Part Matters
People with ADHD are around three times more likely to experience PMDD.
THREE TIMES.
ADHD is already a wild ride of dysregulation for emotional regulation, executive function, impulse control, and rejection sensitivity.
So when the luteal phase loads hormonal sensitivity on top of a nervous system that's already working harder than it should, the result can be significantly more intense.
Which means...
- Emotional regulation becomes nearly impossible
- Rejection sensitivity can become painful
- Executive function drops sharply
And because ADHD makes it harder to track patterns generally, many people don't connect the dots. They just think they're having "another bad patch", but worse.
The gender pain gap is very real. So many women and people with periods have spent years being told they're anxious, or sensitive, or difficult, and remain unheard and undiagnosed.
What's the Treatment?
PMDD has several main treatment routes...
- SSRIs - often used to support serotonin, sometimes all cycle, sometimes just in the luteal phase
- Hormonal management - including the combined pill, or approaches that suppress ovulation altogether
- Talking therapies (CBT, counselling, coaching) - won't "fix it", but can make the harder days more manageable
- GnRH analogues (sometimes called medical menopause) - temporarily switch off your hormonal cycle to see if that changes things
- Hysterectomy - for the most severe cases, though this involves significant decisions and should come with proper support (which isn't always what people get)
There are options. PMDD doesn't have to be endured indefinitely.
Talk to a GP or gynaecologist who understands PMDD (not all of them do). It's ok to name it directly. If you get dismissed, go back or ask for another opinion.
And if you have ADHD, tell them. Having both really affects what support is likely to work, as ADHD meds can behave differently at different points in your cycle.
If You've Just Been Diagnosed, or You're Starting to Suspect It
Start tracking. Before you do anything else.
Clinicians generally need at least two cycles of data before they can properly assess PMDD. They're looking for a consistent pattern and symptoms that clear once bleeding starts. If you arrive at that appointment with two months already recorded, you're walking in significantly better prepared than most people do.
I have two tools built for exactly this.
Cyclical Trait Tracker - A cycle mapping guide built around all four phases, to help you spot patterns over time and advocate for yourself in appointments.
Neuro-Spicy Trait Tracker - The same idea, designed with neurodivergent symptom tracking in mind.
A Note on Cycle Mapping and PMDD
Working with your cycle is not a cure for PMDD. It won't fix a severe nervous system response to hormonal change.
I want to be clear about that.
But what I have seen, consistently, in the people I work with is that...
When someone starts to genuinely understand their cycle, anticipates the shifts, and builds in support before the luteal phase rather than scrambling during it? Things can land a little softer.
Part of what makes it worse is grind culture. Most of us are pushing beyond our capacity all cycle long. How we manage our energy in the earlier phases has a massive impact on how we arrive in the luteal phase.
If you've spent the whole first half of your cycle running on empty, the second half is going to be harder. Every time.
Cycle mapping won't take PMDD away. But it can mean you're less blindsided, better prepared, and not already running on empty.
It's not you...
PMDD is not a personal failing. It's not evidence that you can't manage your emotions, or that you're too much. It's a physiological response, and it deserves to be treated as one.
If you've read this far, you now know more about PMDD than a lot of GPs do. (Joking, not joking.) Use that, whether it's for yourself, or to be an ally for someone you work with or love.
If you want to know more or find peer support, The PMDD Project is a good place to start.