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A.D.A.M. Medical Encyclopedia [Internet]. Atlanta (GA): A.D.A.M.; 2013.

A.D.A.M. Medical Encyclopedia.

Paranoid personality disorder

Personality disorder - paranoid

Last reviewed: November 10, 2012.

Paranoid personality disorder is a mental health condition in which a person has a long-term pattern of distrust and suspicion of others, but does not have a full-blown psychotic disorder such as schizophrenia.

Causes, incidence, and risk factors

Cause of paranoid personality disorder is unknown. The disorder appears to be more common in families with psychotic disorders such as schizophrenia and delusional disorder. This suggests genes may be involved. Environmental factors may play a role as well.

The condition appears to be more common in men.

Symptoms

Persons with paranoid personality disorder are very suspicious of other people. As a result, they severely limit their social lives. They often feel that they are in danger and look for evidence to support their suspicions. They have trouble seeing that their distrustfulness is out of proportion to their environment.

Common symptoms include:

  • Concern that other people have hidden motives
  • Expectation that they will be exploited (used) by others
  • Inability to work together with others
  • Social isolation
  • Detachment
  • Hostility

Signs and tests

Paranoid personality disorder is diagnosed based on a psychological evaluation that assesses the history and severity of the symptoms.

Treatment

Treatment is difficult because people with this condition are often very suspicious of doctors. If treatment is accepted, talk therapy and medications can often be effective.

Expectations (prognosis)

Outlook usually depends on whether the person is willing to accept help. Talk therapy and medications can sometimes reduce paranoia and limit its impact on the person's daily functioning.

Complications

  • Extreme social isolation
  • Problems with school or work

Calling your health care provider

See a health care provider or mental health professional if suspicions are interfering with your relationships or work.

References

  1. Blais MA, Smallwood P, Groves JE, Rivas-Vazquez RA. Personality and personality disorders. In: Stern TA, Rosenbaum JF, Fava M, Biederman J, Rauch SL, eds. Massachusetts General Hospital Comprehensive Clinical Psychiatry. 1st ed. Philadelphia, PA: Elsevier Elsevier; 2008:chap 39.

Review Date: 11/10/2012.

Reviewed by: David B. Merrill, MD, Assistant Clinical Professor of Psychiatry, Department of Psychiatry, Columbia University Medical Center, New York, NY. Also reviewed by A.D.A.M. Health Solutions, Ebix, Inc., Editorial Team: David Zieve, MD, MHA, David R. Eltz, Stephanie Slon, and Nissi Wang.

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Copyright © 2013, A.D.A.M., Inc.

A.D.A.M., Inc. is accredited by URAC, also known as the American Accreditation HealthCare Commission (www.urac.org). URAC's accreditation program is an independent audit to verify that A.D.A.M. follows rigorous standards of quality and accountability. A.D.A.M. is among the first to achieve this important distinction for online health information and services. Learn more about A.D.A.M.'s editorial policy, editorial process and privacy policy. A.D.A.M. is also a founding member of Hi-Ethics and subscribes to the principles of the Health on the Net Foundation (www.hon.ch).

The information provided herein should not be used during any medical emergency or for the diagnosis or treatment of any medical condition. A licensed medical professional should be consulted for diagnosis and treatment of any and all medical conditions. Call 911 for all medical emergencies. Links to other sites are provided for information only — they do not constitute endorsementscof those other sites. © 1997–2011 A.D.A.M., Inc. Any duplication or distribution of the information contained herein is strictly prohibited.

Copyright © 2013, A.D.A.M., Inc.

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