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Paranoid personality disorder
Definition:
An unwarranted tendency to interpret the actions of other people as deliberately threatening or demeaning.
Causes, incidence, and risk factors:
The cause of this disorder is unknown, but the incidence appears increased in families with a schizophrenic member.
Symptoms:

People with a paranoid personality disorder are suspicious of other people, and they are usually unable to acknowledge their own negative feelings towards others. They do not generally lose touch with reality.

  • Suspicion
  • Concern with hidden motives
  • Expects to be exploited by others
  • Inability to collaborate
  • Social isolation
  • Poor self image
  • Detachment
  • Hostility
  • Poor sense of humor
Signs and tests:

A history of paranoid behaviors is common, and a psychological evaluation helps with the diagnosis.
Treatment:

Treatment is difficult because the person may be suspicious of the doctor. Medications and therapy are common and effective treatments.
Expectations (prognosis):

Without treatment, this disorder will be chronic; but treatment can be very effective in controlling the paranoia.
Complications:
  • Avoidance of people
  • Potential for violence
Calling your health care provider:

If suspicions are interfering with relationships or work, a health care provider or mental health professional should be consulted.
Review Date: 5/18/2001
Reviewed By: Christos Ballas, M.D., Department of Psychiatry, University of Pennsylvania Medical Center, Philadelphia, PA. Review provided by VeriMed Healthcare Network.

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