A group of conditions where one’s identity, history, and/or perception are disrupted or otherwise compromised. The four types of dissociative disorder listed in the Diagnostic and Statistical Manual of Mental Disorders (DSM-IV) are dissociative amnesia, dissociative fugue, dissociative identity disorder, and dissociative depersonalization disorder.

Example: In the movie Sybil, Sally Field portrays a young woman suffering from dissociative identity disorder, more commonly known as “multiple personality disorder”.