Today is World Bipolar Day. The NHS describes bipolar disorder as "a mental health condition that affects your moods, which can swing from one extreme to another."
1.3 million people in the UK have bipolar disorder. There still is a stigma around it, and having public figures being open about their diagnosis and living with the condition goes a long way when it comes to boosting awareness.
1. Mariah Carey

2. Jean-Claude Van Damme

4. Pete Wentz

6. Stephen Fry

7. Robbie Williams

8. Kanye West

9. Halsey

10. Selena Gomez

11. Paul Gascoigne

12. Jenifer Lewis

You can find out more about bipolar disorder here. If you need someone to talk to, the Samaritans provide 24/7 support and are contactable on 116 123, you can also text SHOUT to 85258 in the UK for free anonymous 24/7 crisis support from Shout, an affiliate of Crisis Text Line.
Correction: An earlier version of this article included Demi Lovato. While she was diagnosed with bipolar disorder in 2010, she has since stated that she believes the diagnosis was wrong, and has since been diagnosed with ADHD.