Personality disorders—atypical ways of thinking about oneself and relating to other people—are grouped into three clusters: A, B, and C. Cluster B disorders are marked by inappropriate ...

Cluster B personality disorders affect a person’s emotions and behaviors, leading to actions that others tend to consider dramatic, overly emotional, or erratic. A personality disorder is a ...

Cluster C personality disorders include conditions with anxious and fearful thoughts and behaviors. These are avoidant personality disorder (AVPD), dependent personality disorder (DPD), and ...

Cluster A disorders are characterized by odd or eccentric patterns of thinking, such as extreme social detachment, distrust, or unusual beliefs. Paranoid personality disorder, which involves ...

Cluster C personality disorders are marked by symptoms of anxiety and fear. Cluster C personality disorders include avoidant ...