Dissociative Identity Disorder (DID) (previously known as Multiple Personality Disorder (MPD)) is when a body is inhabited by more than one soul. In most cases, one of the souls in the body is a spawn of Satan. It can be cured only by the healing power of exorcism as administered by the One True Church. Should that fail, the sufferer must be burned in order to be saved.
Of course, God-denying liberals will tell you that it is a result of "bad touching". Absurd! If that were true, every White House Page would have the disorder! Pay no attention to know-it-all doctors who ask invasive questions about a father's completely normal shows of affection — they are of the devil!
Dissociative Identity Disorder is an essential part of Wikiality.com's Tube of Liberal Denial of The Existence of God