Answer:
Dissociative identity disorder ''is a disorder in which different personalities coexist in a single body.''
Explanation:
Dissociative identity disorder (DID) is a mental disorder characterized mainly by the alteration of autobiographical memory and identity (with the presence of multiple personalities), as well as by problems in perception, consciousness and volitional control. It usually manifests itself, transiently or chronically, in people predisposed to dissociation who have suffered severe trauma during childhood. Diagnostic criteria include the alternation between 2 or more personalities (very different from each other), that take control of the individual's behavior on a recurring basis and the inability to remember relevant autobiographical information.