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Dissociative Identity Disorder (DID)


Updated January 26, 2009


Dissociative identity disorder is considered one of the dissociative disorders in the Diagnostic and Statistical Manual of Mental Disorders, 4th edition.

A person with dissociative identity disorder will have two or more separate identities that each have their own way of thinking and relating to the world. To have this disorder, a minimum of two of these identities must also take control over the person's behavior again and again. The person with dissociative identity disorder may also have difficulty remembering personal information that, like dissociative amnesia, goes beyond simple forgetfulness.

Also Known As: multiple personality disorder, DID
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