When ADHD and PMDD collide

If your ADHD feels harder to manage in the second half of your cycle - don’t panic. It’s not all in your head; it’s in your brain.

Maybe your mood swings are hitting harder, your focus is disappearing, and you’re reacting to things that wouldn’t normally phase you. To reassure you, you’re not broken. You might just be experiencing the effects of attention deficit hyperactivity disorder (ADHD) and pre-menstrual dysphoric disorder (PMDD) colliding.

While ADHD and PMDD are two different disorders, they share more than you might expect, and when they overlap, daily life can understandingly feel unmanageable.

A connection hidden in plain sight

Nearly half of women with ADHD also experience PMDD symptoms, which is much higher than neurotypical women (Dorani 2021).In fact, a study released in June this year, found that 41.1% of women with ADHD also had PMDD (Broughton, 2025).

So why, when multiple studies have found such a strong relationship between PMDD and ADHD, is the link relatively unexplored?

It probably comes down to the underdiagnosis of ADHD in women. You might have struggled to recognizse your own ADHD, or found it difficult to finally receive an ADHD diagnosis. This is likely because your traits like inattention, emotional sensitivity and the tendency to internalizse feelings of overwhelm didn’t fit the stereotype of ADHD. The issue is, the ADHD stereotype is based on symptoms typical of men, so it’s no wonder as a woman your symptoms didn't match up.

Underdiagnosis of ADHD in women means that female specific factors, like hormonal fluctuations, have been left out of the ADHD conversation. That can feel incredibly frustrating when you’re trying to get to the bottom of something you know feels wrong.

The good news? That’s starting to change. A growing body of research is mapping out how your ADHD brain responds to hormonal shifts and why the luteal phase can feel so destabilizsing.

ADHD and PMDD: A two-way street

Both ADHD and PMDD involve heightened reactivity to both neurotransmitters and hormonal shifts.

They also share several major features:

· Executive dysfunction: difficulty with planning and focus

· Emotional lability: fast-changing, intense emotional responses

· Impulsivity: acting quickly with little thought

If these feel familiar to you, but tend to intensify before your period, it’s because PMDD can amplify your ADHD baseline. In fact your ADHD and PMDD don’t just co-exist, they enhance one another, making your everyday tasks feel overwhelming in the lead up to your period.

Dopamine, estrogen and the luteal phase low

So what links your ADHD and PMDD? Estrogen’s effect on dopamine might hold the answer.

To understand how, we need to look at what’s going on in your ADHD brain. With ADHD, you have lower dopamine availability in certain brain areas, in particular, your pre-frontal cortex - the part responsible for regulation and control.

Dopamine is regulated by estrogen. Estrogen affects dopamine release, receptor sensitivity and dopamine breakdown (Almey, 2016). When estrogen levels drop in the late luteal phase, dopamine drops with it. As you already have low levels of dopamine, this extra decrease can make your ADHD feel harder to manage.

Unfortunately, to make matters worse, there’s also an understanding that your ADHD medication may become less effective during the luteal phase, intensifying your ADHD even further (Jong, 2023), so it’s important to take steps that you can control, such as tracking your symptoms across your cycle.

Together, the neurobiology of ADHD and PMDD makes the brain more reactive to internal changes of both neurotransmitters and hormones. It’s no wonder you’re feeling the struggle. But you’re not alone and understanding the root cause might just be the step you need towards feeling better.

Get Lutea™
Explore Nettle™

Making sense of your cycle

Understanding the overlap of your PMDD and ADHD can give you clarity in your luteal phase, and peace of mind that there’s a reason why things feel harder to navigate. It's your brain responding to complex neurotransmitter shifts and hormonal changes occurring all at once.

Recognizing these patterns is the first step to working with your ADHD throughout your cycle. Everyone’s brain is unique, meaning no experience can be generalized. Samphire helps you track how your focus, emotions and energy shift across your cycle, giving you personalized insights, specific to you. You can anticipate harder phases and support your ADHD with more clarity.

As well as tracking your cycle, you can find relief using Nettle™ - our brain stimulation headband that targets symptoms right at the source Users have shared encouraging experiences of how Nettle™ has supported their ADHD during their luteal phase.

On Trustpilot, one user described feeling ‘generally more cheerful’, noting improved executive function making it easier to ‘get things done’ after struggling with ADHD worsened by hormonal changes. Another reported they felt ‘delighted that it significantly reduced the symptoms’ of both ADHD and PMDD.

These personal stories suggest that NettleTM may offer valuable support for PMDD and the changes with your ADHD that come with it- helping you feel more focused and in control.

This article is part of a series exploring the comorbidities of Premenstrual Dysphoric Disorder (PMDD), find more on childhood trauma, Autism, EDS, BPD and eating disorders.