Hard thing to say for sure, really. Early theories claimed that there was always some sort of abuse (often sexual) during the "person's" childhood. I'm putting "person" in quotations simply because I...
I'm not sure who answered this question, but the symptoms they described below are actually for schizophrenia, not multiple personality disorder. There is a big difference. if you look it up on...
dissociative identity disorderSee our answer to the following related question:http://wiki.answers.com/Q/Reaction_to_multiple_personality_disoreder&src=ansTT