A dissociative disorder in which several distinct identities or personality states alternate in controlling the sufferer's consciousness and behaviour
(Psychology) split personality, condition in which a person divides into at least two separate and independent personalities
A highly disputed psychological disorder in which a person exhibits two or more disassociated personalities, each functioning as a distinct entity. Also called dissociative disorder. if someone has a multiple personality, they are mentally ill because they have two or more completely separate personalities that each behave differently