A serial rapist's attempt to claim insanity based on multiple personality disorder fell flat in Texas, as a judge ordered the expert's trial testimony stricken from the record as junk science.

The story of Sybil, a young woman who was horrifically abused by her mother as a child, resulting in the creation of multiple personalities, caught the world by storm. Sybil was a bestselling book in ...

Add Yahoo as a preferred source to see more of our stories on Google. Another medical name that's been changed is dissociative identity disorder – a condition that affects only about 1.5% of people ...

Have you ever felt like there are different versions of you living inside your mind, each with its own thoughts, feelings, and even memories? This feeling can be more than just an expression of having ...

Comorbidity is when a person has more than one health condition at once. Researchers investigating the comorbidity of personality disorders have found people with certain disorders may have other ...