This document defines personality disorders and provides details on specific types. It begins by defining personality disorders as traits that consistently influence behavior. It then discusses diagnosis and clusters personality disorders into three groups: Cluster A (eccentric/odd), Cluster B (erratic/dramatic), and Cluster C (anxious/fearful). For each type, it lists clinical manifestations and describes features such as social detachment, impulsivity, narcissism, and perfectionism. The document concludes by covering signs and symptoms, nursing diagnoses, and nursing interventions for personality disorders.