Split personality

View the Phobias Slideshow Pictures

Medical Definition of Split personality

Split personality: Multiple personality disorder, a neurosis in which the personality becomes dissociated into two or more distinct parts each of which becomes dominant and controls behavior from time to time to the exclusion of the other parts. A modern name for this condition is dissociative identity disorder.


Quick GuideWhat's Your Biggest Fear? Phobias

What's Your Biggest Fear? Phobias

Subscribe to MedicineNet's Depression Newsletter

By clicking Submit, I agree to the MedicineNet's Terms & Conditions & Privacy Policy and understand that I may opt out of MedicineNet's subscriptions at any time.

Reviewed on 1/25/2017

Health Solutions From Our Sponsors