Dissociative identity disorder (did) is the disorder that was previously recognized as multiple personality disorder. It’s characterized by the presence of two or more dissociated self states, known as alters, … If you or someone you know is struggling with symptoms of did or related trauma, seek help from a qualified mental health professional experienced in treating dissociative disorders.

In controlled studies, non-specialised treatment that did not address dissociative self-states did not substantially improve did symptoms, though there may be improvement in patients' other conditions. Dissociative identity disorder (did) is a mental health condition where you have two or more separate personalities that control your behavior at different times.