Bipolar Disorder & ADHD

neurobetter’s guide to understanding bipolar disorder, its overlap with ADHD, and how to access support.

What is bipolar disorder?

Bipolar disorder is a mental health condition where mood episodes shift between emotional extremes. These are not everyday mood changes - they are distinct periods that can last weeks or months.

There are two main types:

Bipolar I: Includes periods of mania (very elevated, energised mood) and depression. Manic episodes are severe enough to affect daily life.
Bipolar II: Includes periods of hypomania (elevated mood, less severe than mania) and depression. Depressive episodes are often the more distressing part.

Both types involve significant changes in sleep, energy, thinking, and behaviour. Episodes follow a cyclical pattern, often with periods of stability in between.

Bipolar disorder in numbers

Around 1–2% of the population experience bipolar disorder.¹ This means roughly 1 million people in the UK live with the condition.

Bipolar disorder is often diagnosed in young adulthood, but can emerge at any age. It affects all genders, though patterns of diagnosis and experience differ.

Information

This information is provided to help you understand a topic or concept. It's intended to be educational and may not apply to your specific situation.

If you think you might have bipolar disorder, a GP or psychiatrist can discuss your experiences and arrange proper assessment. Diagnosis requires careful evaluation of your mood history over time.

The ADHD and bipolar connection

Many people with ADHD and bipolar disorder share similar symptoms. This overlap is one of the most confusing areas in mental health diagnosis - and it matters.

Why they are confused:

Both conditions can involve racing thoughts, rapid speech, high energy, distractibility, irritability, and restlessness. This symptom overlap means people are sometimes misdiagnosed or diagnosed with one condition when they have both.

Research suggests around 17% of people with bipolar disorder also have ADHD.² And adults with undiagnosed ADHD are often first treated for mood disorders instead.

Evidence & Sources

This content is based on research, clinical evidence, or expert sources. We've included references where possible.

People with both ADHD and bipolar disorder tend to experience a more severe course: earlier age of onset, shorter intervals between episodes, and more treatment challenges.²

Key differences: ADHD mood fluctuations vs bipolar episodes

Understanding the difference can help you and your clinician identify what you are experiencing.

ADHD mood swings

Triggered by external events (rejection, frustration, stress, overstimulation)
Situational - improve when the situation changes
Tied to emotional dysregulation and rejection sensitivity
Last hours to a day or two
Present consistently throughout life
Respond to ADHD management strategies

Bipolar episodes

Cyclical and biological - not directly triggered by events
Independent of what is happening around you
Follow a pattern (for some people, seasonal or recurring every few months)
Last weeks to months
Affect sleep, appetite, and energy at a fundamental level
Require mood stabilising medication, not just stimulants

The key distinction: ADHD mood dysregulation is reactive and situational. Bipolar episodes are cyclical and endogenous - they emerge from within.

Why accurate diagnosis matters

If you have both ADHD and bipolar disorder, this changes how you are treated.

ADHD medication alone - stimulants like methylphenidate or amphetamines - can sometimes trigger or worsen manic or hypomanic episodes in people with undiagnosed bipolar disorder. This is why psychiatrists assess mood history carefully before prescribing ADHD medication.

With a correct diagnosis of both conditions, treatment can be tailored: mood stabilisers first, then ADHD medication when appropriate and carefully monitored.

Reassurance

This content is intended to provide comfort and validation. While we hope it helps, your feelings are valid regardless of what you read here.

Many people live well with both ADHD and bipolar disorder when both are recognised and treated appropriately. Understanding what you have is the first step.

Living with both

People with ADHD and bipolar disorder often describe:

Difficulty distinguishing between ADHD energy and hypomanic energy
Longer recovery times from depressive episodes
Challenges with medication adjustments and side effects
Relief at finally understanding why they have struggled
Better mood stability once treatment addresses both conditions

Your experience is valid, whatever you are managing.

Getting support

Start with your GP. They can refer you to mental health services for assessment. If you think you have both ADHD and bipolar disorder, mention this - it helps your clinician understand your history.

Where to find help

Your GP can refer you to mental health services for assessment
Use our Local Services directory to find NHS and private providers near you
Our Ask a Counsellor service lets you put a question to a registered counsellor
Our Online Community connects you with other neurodivergent people who understand

Specialist charities:

Bipolar UK (https://www.bipolaruk.org/) - dedicated support, information, and community
ADHD UK (https://adhduk.co.uk/) - resources for ADHD diagnosis and management
Mind (https://www.mind.org.uk/) - mental health support and information
Samaritans - 116 123 (available 24 hours) - for emotional support

Safety & Boundaries

This content discusses personal safety, setting boundaries, or protecting your wellbeing. Take what works for you and leave what doesn't.

If you are in crisis, experiencing suicidal thoughts, or need immediate support, contact Samaritans (116 123), call 111, or go to your nearest A&E. Visit Get Help Now for all crisis support options.

Mind. (2024). Bipolar disorder. https://www.mind.org.uk/information-support/types-of-mental-health-problems/bipolar-disorder/ ↩
Schiweck, C., Arteaga-Henriquez, G., Aichholzer, M. et al. (2021). Comorbidity of ADHD and adult bipolar disorder: A systematic review and meta-analysis. Neuroscience & Biobehavioral Reviews, 124, 100-123. https://doi.org/10.1016/j.neubiorev.2021.01.017 ↩

This page has had one contribution from our team and community, and was last updated on 17 February 2026. Keeping this content up-to-date is a difficult task, especially as details can change quickly. We welcome feedback on any of the content in the Advice Hub, including any lived experience you can share. Please login or create an account to submit feedback.

neurobetter's content and services are intended to provide information, peer support, and connections to services. They are not intended to replace, override, or contradict medical or psychological advice provided by a doctor, psychologist or other healthcare professional.