Obsessive-compulsive personality disorder (OCPD) is a chronic condition in which a person demonstrates an excessive focus on details, order and rules, and the need to achieve a perfect outcome, often ...

The Diagnostic and Statistical Manual of Mental Disorders, DSM-5, identifies 10 unique personality disorders, each belonging to one of three groups known as "clusters." Cluster A contains paranoid, ...

Medically reviewed by Michael MacIntyre, MD Cluster C personality disorders include conditions with anxious and fearful thoughts and behaviors. These are avoidant personality disorder (AVPD), ...