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What causes paranoid personality disorder (PPD)?

Mark Moronell, MD
Cardiology (Cardiovascular Disease)
Paranoid personality disorder can be caused by several different factors, including genetics. Each person inherits different features and qualities from parents and relatives. Paranoid personality disorder seems to be more common in those with a family history of schizophrenia and other psychotic illnesses. The environments in which you grow up also affect your personality. When family members are abusive or inattentive, it's possible to develop specific traits that become symptomatic of a personality disorder. Early life traumas, such as losing a loved one, or being in a serious accident, may also set off personality disorder characteristics. According to the Mayo Clinic, paranoid personality disorder probably begins in childhood, but becomes fully developed in adulthood.

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Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.