Personality disorders

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Personality disorders are a group of psychiatric conditions in which chronic behavior patterns cause serious problems with relationships and work.

The exact cause of personality disorders is unknown. However, many genetic and environmental factors are thought to play a role.

Mental health professionals categorize these disorders into the following types:

• Antisocial personality disorder
• Avoidant personality disorder
• Borderline personality disorder
• Dependent personality disorder
• Histrionic personality disorder
• Narcissistic personality disorder
• Obsessive-compulsive personality disorder
• Paranoid personality disorder
• Schizoid personality disorder
• Schizotypal personality disorder

Review Date: 10/17/2008
Reviewed By: Linda Vorvick, MD, Seattle Site Coordinator, Lecturer, Pathophysiology, MEDEX Northwest Division of Physician Assistant Studies, University of Washington School of Medicine; and Timothy A. Rogge, MD, private practice in psychiatry, Kirkland, Washington. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.

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