20 Celebrities Who Struggle With Mental Illness

9. Roseanne Barr – Dissociative Identity Disorder

Roseanne Barr has been known for her extreme behavior for nearly as long as she’s been a celebrity. She’s a brilliant writer, comedian, and actress, but she says that she has several mental illnesses that impede her success. She has had several very public displays of strange behavior, which led her to admit that she has seven different personalities and it can be hard for her to stay in control very long.