Dissociative Identity Disorder (more commonly referred to as multiple personality disorder) can be very hard to diagnose in celebrities. Do they have true multiple personalities, or are those just part of a persona they are trying to project? This list of celebrities with dissociative identity disorder includes people who have actually been diagnosed as well as those who seem like they might be dealing with the disorder.
Adam Duritz from Counting Crows and Roseanne Barr are two of the more well-known diagnosed celebrities with dissociative identity disorder. Though she was not diagnosed while she was alive, many people believe Marilyn Monroe could be included on a list of famous people with multiple personalities. And people speculate that numerous other celebs (including Lady Gaga and Nicki Minaj) have multiple personality disorder. Are they just supercreative in imagining their alter egos, or do those alter egos actually exist in their minds?
Rikki Lee Travolta had a successful stage career, starring in musicals including Joseph and the Amazing Technicolor Dreamcoat and Tony n' Tina's Wedding. He claimed to be the nephew of John Travolta, but the truth of his identity came out during a mental breakdown. His real name was Gregory Dienati, and he had DID.
"Rikki Lee Travolta" was his dominant personality. He documented his journey with the disorder in Unbecoming Travolta: A Memoir of Mania and Multiple Personalities.