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.
Avoidant Personality Disorder: Symptoms, Treatments, and Complications
WebMD discusses the signs of avoidant personality disorder as well as treatments and complications.
Dissociative Identity Disorder (Multiple Personality Disorder)
Dissociative identity disorder, once called multiple personality disorder, results in two or more split identities. Learn more from WebMD about the causes, symptoms, and treatment of this complex mental illness.
What Is Narcissism?
Learn the common traits of narcissistic personality disorder and the causes and treatments of this mental illness.
Delusional disorder, previously called paranoid disorder, is a mental disorder in which a person cannot tell what is real from what is imagined. Learn more about the causes, symptoms, and treatment of this illness.
Slideshows & Images
Slideshow: A Closer Look at Depression
What is depression? WebMD provides information on symptoms, tests, and treatments for many types of the disorder.
Slideshow: Can Your Personality Affect Your Health?
Certain types of people, like optimists or extroverts, may have a few health advantages. Find out more about how some personality traits can affect you physically.