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Personality Disorders Directory

A personality disorder is a psychiatric disorder that causes a person to act differently than the social norm and can cause serious problems with socializing or even day-to-day skills. For example, with dissociative identity disorder, or multiple personality disorder, a person has no connection with their thoughts, memories, and actions, and may be torn between two distinct personalities that control him or her. Follow the links below to find WebMD's comprehensive coverage about how a personality disorder is caused, how to treat it, and much more.

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Thumbnail: Sociopath vs. Psychopath: What’s the Difference?

You’ve heard the terms, but do you really know what they mean? Learn how to spot the differences in these personalities.

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