Paranoid Personality Disorder Symptoms, Causes, and Treatment

Causes of the paranoid personality disorder. It is hard to tell the exact causes of various mental diseases unless the person had to go through some really stressful or shocking situation. A powerful shock might be the reason for the individual to behave weirdly for the rest of his or her life. Doctors stress there are three factors important to consider when trying to realize why PPD happened to someone: biological, psychological, social.