Premenstrual Dysphoric Disorder (PMDD)

What is Premenstrual Dysphoric Disorder (PMDD)?

Premenstrual dysphoric disorder (PMDD) is a severe form of premenstrual syndrome (PMS) that affects more people than you might think. According to a review of global studies published in the Journal of Affective Disorders, this condition affects approximately 1.6% of those who menstruate. That’s roughly 31 million people worldwide. And, as many as 7.7% of people have received a provisional diagnosis. These figures suggest that PMDD is far more common than it is often recognised to be.

Whilst many people experience mild to moderate PMS symptoms, it’s important to recognise that PMDD is different. It can cause intense emotional and physical symptoms that significantly interfere with your daily functioning, relationships and quality of life. 

PMDD is a genuine medical condition. It’s not just in your head, and it’s not your fault. You aren’t to blame for what’s happening. Your body is experiencing a heightened sensitivity to the hormonal fluctuations that occur during your menstrual cycle. Symptoms will usually emerge one to two weeks before your period starts, during the luteal phase. This is the time between ovulation and when you begin to bleed.

PMDD follows a predictable cyclical pattern, which distinguishes it from other conditions. We understand how distressing it can be knowing that you are about to go into a cycle of feeling overwhelmed by the emotional and physical symptoms. And, it’s important to know that this isn’t simply “bad PMS” that you should endure. With a proper diagnosis and treatment plan, many people with PMDD can experience significant improvement in symptoms and quality of life.

Signs and Symptoms of PMDD

Not everyone with PMDD experiences it in the same way. But there are some common symptoms which span both the emotional and physical. If you or someone you care about is experiencing a number of symptoms outlined below, it might be more than regular premenstrual syndrome. PMDD symptoms include:

Emotional and psychological symptoms:

• Severe mood swings, sudden tearfulness, or increased sensitivity to rejection
• Marked irritability, anger, or increased relationship conflicts
• Depressed mood, feelings of hopelessness, or negative thoughts about yourself
• Intense anxiety, tension, or feeling more on edge than usual
• Less interest in activities you usually enjoy like hobbies, work, or social interactions
• Difficulty concentrating or focusing on tasks
• Feeling completely overwhelmed or out of control

Physical symptoms:

• Breast tenderness or swelling
• Joint or muscle pain
• Bloating or weight gain
• Fatigue or low energy
• Changes in appetite, including specific food cravings
• Sleep disturbances like sleeping much more or less than you usually do
• Frequent or unusually severe headaches

What sets PMDD apart from PMS is the severity of these symptoms. Many people who suffer from the condition describe themselves as feeling like a totally different person during the symptomatic weeks. It can almost feel as if you don’t recognise yourself in your reactions and emotions. Not feeling at all like yourself can increase the sensations of isolation, confusion and loneliness and we understand how distressing this can be. 

Causes of PMDD

The causes behind PMDD are not fully understood yet, and there isn’t an exact cause or reason why some people suffer with it. It’s generally thought that it results from a heightened response to hormonal changes during the menstrual cycle.

This hormonal sensitivity affects several systems in the brain that help regulate mood, sleep, and appetite. In people with PMDD, the brain appears to react unusually strongly to the natural hormonal changes that happen across the menstrual cycle. This reaction can disrupt key brain chemicals (including serotonin and others) in ways that trigger the emotional and physical symptoms of PMDD. Researchers are still working to fully understand why this happens in some people and not others.

There are several factors which might increase the likelihood of developing PMDD, including:

• Family history of PMDD or severe PMS
• Previous experiences of depression and/or anxiety
• Stressful or traumatic life events

It's important to understand that PMDD causes are biological. They aren’t signs of personal failings or weakness, and you haven’t done anything wrong to have caused PMDD. 

PMS vs PMDD: What’s the difference?

Many people who menstruate experience some PMS symptoms during their cycle. These typically involve mild mood changes, breast tenderness, bloating and fatigue. But the difference between PMS and PMDD lies in the severity and impact of these symptoms. 

While they may be uncomfortable, PMS symptoms generally don’t prevent you from working, maintaining healthy relationships, or managing your daily responsibilities. In contrast, PMDD can make these things feel insurmountable. It causes severe symptoms that can significantly disrupt your life. You might find yourself unable to work during symptomatic weeks. Or experiencing conflict or relationship breakdowns. 

The emotional symptoms of PMDD—such as severe depression, anxiety, or anger—are particularly pronounced and distressing. And, not understanding what’s happening can add another layer of confusion to an already painful situation. 

Helping you to understand and make sense of your experience is something we value highly at the London Psychiatry Clinic. And we know that getting the right support can be a vital lifeline to managing PMDD.

Is PMDD a disability? 

Under UK equality law, PMDD may be considered a disability if it has a substantial and long-term negative effect on your ability to carry out normal daily activities, providing access to workplace accommodations and legal protections.

Under the UK Equality Act, PMDD may be considered a disability if it has a substantial and long-term negative effect on your ability to carry out normal daily activities. If it does, this means your employer has a legal duty to make reasonable adjustments to support you.

If you'd like to understand your rights in more detail, the Equality and Human Rights Commission can help you understand whether this applies to you, and Citizens Advice offers a plain-English guide to help you check whether your condition qualifies. At the London Psychiatry Clinic, we can also help you navigate workplace accommodations and write supporting letters explaining your clinical condition.

PMDD & ADHD

There is some emerging research that highlights a possible connection between PMDD and ADHD (Attention Deficit Hyperactivity Disorder). A 2025 cross-sectional survey study, published in The British Journal of Psychiatry, found that women with a clinical ADHD diagnosis were more than 3x as likely to meet the criteria for PMDD compared to those without ADHD.

If you have, or suspect you may have ADHD, you might notice your symptoms get significantly worse before your period. This can be a very difficult time to navigate. Dealing with heightened concentration difficulties and emotional dysregulation whilst experiencing PMDD symptoms can leave you feeling exhausted and isolated. 

It’s important to reassure you that understanding these connections isn’t about adding more labels. It’s about recognising that your experiences are very real and rooted in your unique neurobiology. We believe in a personalised, deeply compassionate and comprehensive treatment approach. One that honours all conditions and can make a meaningful impact on your sense of wellbeing.

How to get diagnosed with PMDD

Getting diagnosed with PMDD typically involves tracking your symptoms across at least two menstrual cycles to establish the pattern in which they appear.

One way you can do this is to keep a daily symptom diary, recording your emotional and physical experiences. Make sure to include detailed notes on how severe the symptoms are and how they affect work, relationships, and daily activities. You can use a regular paper diary, and there are also PMDD-tracking apps you can download to your phone if you find that more convenient. 

Once you’ve got a symptom diary, you can take it to your healthcare provider, who will review it along with your medical history. They’ll want to rule out other conditions that might cause similar symptoms, such as depression, anxiety or possibly thyroid issues. 

In order to be diagnosed with PMDD, you’ll need to show that you are affected by at least five of the main symptoms during most menstrual cycles. One of these must be a core emotional symptom. 

We understand that it can be frustrating to have to write everything down, especially when you are in the midst of a difficult time. But knowing exactly what your main symptoms are and how they are affecting you is the first step towards getting the personalised support you need.

PMDD Diagnosis in the UK

If you're wondering how to get diagnosed with PMDD in the UK, you can start with your GP. They may then refer you to a specialist. With GP waiting lists and referral times often being long, you may prefer to go the private route. Services such as those we offer at the London Psychiatry Clinic can provide much faster access to specialised care. You’ll be able to speak to experts who have a wealth of experience in diagnosing and treating PMDD. You don’t need to wait for a referral from your GP to book a consultation. We understand that getting comprehensive care as quickly as possible can make a huge difference to your mental and physical wellbeing.

Get in touch today.

Private PMDD Treatment in London and UK

At the London Psychiatry Clinic, we understand that PMDD affects everyone differently. Rather than looking at a set of symptoms, we take a holistic approach to supporting you. Our treatment plans are always personalised, addressing multiple aspects of the condition and how it affects you as a unique individual. 

Our experts follow NICE guidelines and current best practices. We will always work collaboratively with you throughout your treatment journey. This includes regularly reviewing progress and adjusting your plan to help improve your symptoms and mental wellbeing.

Our team of experienced psychiatrists and therapists understand the profound impact PMDD can have on every aspect of your life, and we're committed to helping you find relief.

Reaching out for help is an incredibly brave step and we are here to support you. Get in touch to book a consultation today.

Types of Treatment for PMDD

Psychoeducation

Understanding PMDD is a powerful first step in managing the condition. We provide comprehensive psychoeducation about what's happening in your body and brain, why you experience these symptoms, and what you can do about them. Learning about PMDD helps you recognise patterns, anticipate difficult weeks, and develop coping strategies. Many people find that simply understanding their condition reduces feelings of shame, confusion, and isolation.

Talking Therapy

Talking about your experience and learning coping strategies plays an important role in PMDD treatment. Our therapists offer different kinds of talking therapy such as Cognitive Behavioural Therapy (CBT). CBT is one type of therapy that may help you to understand and manage your PMDD symptoms. For example, it can help you identify negative thought patterns around your condition and develop healthier ways of responding to emotional symptoms.

Your therapist can help you develop coping skills for difficult weeks, improve communication in relationships, and address any underlying anxiety or depression that might worsen PMDD symptoms. We offer both face-to-face therapy at our London clinic and online therapy so we can support you no matter where you are in the world.

Medication

In some cases, medication might be a potential treatment pathway alongside talking-based therapies. We understand that different people have different preferences. Our psychiatrists will always discuss all available options, explaining benefits and potential side effects. It’s important that you feel well informed and able to make a decision based on your unique needs.

Nutritional and Lifestyle Interventions

We also recognise that nutritional and lifestyle interventions can provide additional support for managing PMDD. Regular exercise may help to reduce PMDD symptoms, particularly those related to your mood. Even small changes like walking in nature or gentle yoga can often make a difference.

Making sure you are getting enough quality sleep is essential when dealing with PMDD. Your therapist might work with you to create a relaxing nighttime routine to help create healthy sleep habits. These might include setting regular sleep and waking times, mindfulness exercises or meditation.

We’ll also take a look at your dietary habits and make sure that your body is being well supported nutritionally. For example, reducing caffeine and alcohol during symptomatic weeks may help to ease anxiety and sleep disturbances. 

Find the best kind of treatment for PMDD

The best treatment for you will depend on your individual symptoms, circumstances, and preferences. At the London Psychiatry Clinic, we'll work with you to develop a personalised treatment plan that addresses your specific needs.

Whether you're seeking an initial diagnosis, looking for treatment alternatives, or need comprehensive ongoing support, our team is here to help. You deserve to feel well throughout your entire menstrual cycle.

Speak with us today to discuss how we can support you on your journey to better mental health and wellbeing.