Personality disorders are deeply ingrained, rigid ways of thinking and behaving that result in impaired relationships with others and often cause distress for the individual who experiences them.

But people with schizoid personality disorder do not hallucinate or feel paranoid, nor do they have distorted thinking or speech. The causes of personality disorders are not known, but there is a ...

Insider's takeaway Paranoid personality disorder can cause intense distrust of other people and may make having close relationships very difficult. If you think you may have symptoms of PPD ...