Symptoms of Paranoid Personality Disorder

A pervasive distrust and suspiciousness of other people such that their motives are interpreted as malevolent, and it start by early adulthood and present in a variety of contexts, as indicated by four (or more) of the  following:

• Suspects, without sufficient basis, that others are exploiting, harming, or deceiving him or her
• Is preoccupied with unjustified doubts about the loyalty or trustworthiness of friends or associates
• Is reluctant to confide in others because of unwarranted fear that the information will be used maliciously against him or her
• Reads hidden demeaning or threatening meanings into benign remarks or events
• Persistently bears grudges, i.e., is unforgiving of insults, injuries, or slights
• Perceives attacks on his or her character or reputation that are not apparent to others and is quick to react angrily or to counterattack
• Has recurrent suspicions, without justification, regarding fidelity of spouse or sexual partner

Like every personality disorder, the person must be at least 18 years old before they can be diagnosed with it.