This document discusses personality disorders. It defines personality as characteristic patterns of thinking, feeling and acting, and disorder as disturbance or confusion. Personality disorders affect how people manage feelings and relate to others. They include avoidant, dependent, obsessive-compulsive, depressive, passive-aggressive, and sadistic types. Signs include social anxiety, low self-esteem, difficulty forming relationships, and excessive anger in some types. Causes may include genes and environment. Treatment involves psychotherapy like talk therapy and medication.