Previously known as multiple personality disorder or simply Borderline personality disorder disorder, dissociative identity disorder is a very serious and unpleasant form of dissociation. It is based on the lack of connection, or rather a discontinuity in thought, action, feeling, memory or even a misplaced sense of identity.
It is usually considered to be a result of severe traumatic experiences in early childhood, varying from extremely physical to repeated emotional or sexual abuse. It is thought to be a self-defense mechanism where the person dissociates himself from any such experience or situation that would deem to be harmful to his or her conscious self. It is, however, not to be confused with schizophrenia.
There are innumerable indicators that point towards dissociative identity disorder. Some of them include: