This document describes various personality disorders categorized into three clusters (A, B, and C) and provides descriptive behaviors for each. It also lists nursing interventions. Cluster A disorders include paranoid, schizoid, and schizotypal personalities. Cluster B includes antisocial, borderline, histrionic, and narcissistic personalities. Cluster C comprises avoidant, dependent, and obsessive-compulsive personalities. The nursing interventions focus on ensuring safety, reducing anxiety, maintaining consistency, and helping clients build competence and self-worth.