What are Personality Disorders?

Cluster A — Odd or eccentric disorders, including paranoid personality disorder, as well as schizoid and schizotypal personalities.

Cluster B — Dramatic or erratic disorders, including narcissistic personality disorder, histrionic personality disorder, and borderline personality disorder.  

Cluster C — Anxious or fearful disorders, including avoidant personality disorder, dependent personality disorder, and obsessive-compulsive personality disorder.