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</div><div><span>Paranoid personality disorder</span></div></div>
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</noscript></div><div class="main"><div id="ency_summary"><p>Paranoid personality disorder (PPD) is a mental condition in which a person has a long-term pattern of distrust and suspicion of others. The person does not have a full-blown <a test="test" href="./001553.htm">psychotic</a> disorder, such as <a test="test" href="./000928.htm">schizophrenia</a>.</p></div><section><div class="section"><div class="section-header"><div class="section-title"><h2>Causes</h2></div><div class="section-button"><button type="submit" aria-controls="section-1" role="button" title="Expand/Collapse section"><span class="icon icon-section-action">
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</div></div><div class="section-body" id="section-1"><p>Causes of PPD are unknown. PPD seems to be more common in families with psychotic disorders, such as schizophrenia and delusional disorder. This suggests genes may be involved. Other factors may play a role as well.</p><p>PPD seems to be more common in men.</p></div></div></section><section><div class="section"><div class="section-header"><div class="section-title"><h2>Symptoms</h2></div><div class="section-button"><button type="submit" aria-controls="section-2" role="button" title="Expand/Collapse section"><span class="icon icon-section-action">
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</div></div><div class="section-body" id="section-2"><p>People with PPD 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 distrust is out of proportion to their environment.</p><p>Common symptoms include:</p><ul><li>Concern that other people have hidden motives</li><li>Thinking that they will be exploited (used) or harmed by others</li><li>Not able to work together with others</li><li>Social isolation</li><li>Detachment</li><li>Hostility</li></ul></div></div></section><section><div class="section"><div class="section-header"><div class="section-title"><h2>Exams and Tests</h2></div><div class="section-button"><button type="submit" aria-controls="section-3" role="button" title="Expand/Collapse section"><span class="icon icon-section-action">
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</div></div><div class="section-body" id="section-3"><p>PPD is diagnosed based on a psychological evaluation. The health care provider will consider how long and how severe the person's symptoms are.</p></div></div></section><section><div class="section"><div class="section-header"><div class="section-title"><h2>Treatment</h2></div><div class="section-button"><button type="submit" aria-controls="section-4" role="button" title="Expand/Collapse section"><span class="icon icon-section-action">
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</div></div><div class="section-body" id="section-4"><p>Treatment is difficult because people with PPD are often very suspicious of providers. If treatment is accepted, talk therapy and medicines can often be effective.</p></div></div></section><section><div class="section"><div class="section-header"><div class="section-title"><h2>Outlook (Prognosis)</h2></div><div class="section-button"><button type="submit" aria-controls="section-5" role="button" title="Expand/Collapse section"><span class="icon icon-section-action">
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</div></div><div class="section-body" id="section-5"><p>Outlook usually depends on whether the person is willing to accept help. Talk therapy and medicines can sometimes reduce paranoia and limit its impact on the person's daily functioning.</p></div></div></section><section><div class="section"><div class="section-header"><div class="section-title"><h2>Possible Complications</h2></div><div class="section-button"><button type="submit" aria-controls="section-6" role="button" title="Expand/Collapse section"><span class="icon icon-section-action">
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</div></div><div class="section-body" id="section-6"><p>Complications may include:</p><ul><li>Extreme social isolation</li><li>Problems with school or work </li></ul></div></div></section><section><div class="section"><div class="section-header"><div class="section-title"><h2>When to Contact a Medical Professional</h2></div><div class="section-button"><button type="submit" aria-controls="section-7" role="button" title="Expand/Collapse section"><span class="icon icon-section-action">
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</div></div><div class="section-body" id="section-7"><p>See a provider or mental health professional if suspicions are interfering with your relationships or work.</p></div></div></section><section><div class="section"><div class="section-header"><div class="section-title"><h2>Alternative Names</h2></div><div class="section-button"><button type="submit" aria-controls="section-Alt" role="button" title="Expand/Collapse section"><span class="icon icon-section-action">
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</div></div><div class="section-body" id="section-Alt"><p>Personality disorder - paranoid; PPD</p></div></div></section><section><div class="section"><div class="section-header"><div class="section-title"><h2>References</h2></div><div class="section-button"><button type="submit" aria-controls="section-Ref" role="button" title="Expand/Collapse section"><span class="icon icon-section-action">
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</div></div><div class="section-body" id="section-Ref"><p>American Psychiatric Association. Paranoid personality disorder. <em>Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition, Text Revision</em> (DSM-5-TR), Washington, DC: American Psychiatric Association Publishing; 2022.</p><p>Blais MA, Rivas-Vazquez R, Ruchensky JR, Stein MB. Personality and personality disorders. In: Stern TA, Wilens TE, Fava M, eds. <em>Massachusetts General Hospital Comprehensive Clinical Psychiatry. </em>3rd ed. Philadelphia, PA: Elsevier; 2025:chap 37.</p></div></div></section>
<section><div class="section"><div class="section-header"><div class="section-title"><h2>Review Date 7/17/2024</h2></div><div class="section-button"><button type="submit" aria-controls="section-version" role="button" title="Expand/Collapse section"><span class="icon icon-section-action">
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<div id="section-version" class="section-body"><p>Updated by: Fred K. Berger, MD, addiction and forensic psychiatrist, Scripps Memorial Hospital, La Jolla, CA. Also reviewed by David C. Dugdale, MD, Medical Director, Brenda Conaway, Editorial Director, and the A.D.A.M. Editorial team.</p>
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