Paranoid Personality Disorder
Alternate Names : Paranoia
A personality disorder is a mental disorder that causes a person to think and behave abnormally. This makes it hard for him or her to interact with other people and function normally in society. A person with paranoid personality disorder (PPD) mistrusts other people, even though he or she has no reason to do so.
What is going on in the body?
A person with PPD is suspicious and mistrustful of others. He or she is always "on guard", and may be unable to form close relationships.
What are the causes and risks of the condition?
The exact cause of the condition is unknown. Genetics may be involved. Early childhood experiences, including physical or emotion trauma, may cause PPD.