Which disorder is classified as Cluster B?

• A. Avoidant personality disorder
• B. Schizoid personality disorder
• C. Histrionic personality disorder
• D. Narcissistic personality disorder

Answer: (D)

Cluster B groups disorders with dramatic, emotional, and erratic patterns of behavior. Narcissistic personality disorder fits this pattern through grandiosity, a constant need for admiration, and a lack of empathy, which drive intense, unstable relationships and self-centered behavior typical of this cluster. It’s also helpful to note that Histrionic personality disorder is another example within the same cluster, sharing emphasis on dramatic emotional expression. By contrast, Avoidant personality disorder is anxious/fearful (Cluster C), and Schizoid personality disorder involves social detachment and limited emotional expression (Cluster A).