Definition of Multiple personality disorder
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.
Source: MedTerms™ Medical Dictionaryhttp://www.medterms.com/script/main/art.asp?articlekey=20573
Last Editorial Review: 5/24/2002
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