Paranoid Personality Disorder

Paranoid personality disorder (PPD) is one of a group of conditions called “Cluster A” personality disorders which involve odd or eccentric ways of thinking. People with PPD also suffer from paranoia, an unrelenting mistrust and suspicion of others, even when there is no reason to be suspicious.


Cluster Number:
Wiki Number: PW151
Diagnosis: Paranoid Personality Disorder
US Patients: .5%-2.5% of the general population
World Patients:
Sex Ratio: M+;F
Age Onset:
Brain Area:
Symptoms: paranoid delusions, mistrust of others, constantly seeking validation of their fears and mistrust. Isolate themselves.
Progression: suspicious, preoccupied with friends’ loyalty, bears grudges, quick to attack and counterattack, fears spousal infidelity
Causes: heritable, overvalue their capabilities and attribute limitations or failures to the deviancy of others
Medications: antidepressants, antipsychotics and anti-anxiety medications

Youtube Video: The Mistrust of Paranoid Personality

Amazon or Library Book: Understanding Paranoia

Click the book to link or buy from Amazon.

Support Group:; 800-950-6264

(National Alliance on Mental Illness)


The world-wide medical research
reports chosen for each diagnosis 

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PubMed article’s summary-abstract.