Medicine & USMLE

Cluster B Personality Disorders

Personality Disorders
  1. Cluster B Personality Disorders
  2. Cluster A Personality Disorders
  3. Cluster C Personality Disorders


Cluster B Personality Disorders are the 'wild' personality disorders, and they are characterized by emotional and relational problems. Narcissistic Personality Disorder is characterized by grandiosity and a lack of empathy, Borderline Personality Disorder is characterized by unstable moods and relationships, Histrionic Personality Disorder leads to attention-seeking and dramatic behavior, and Antisocial Personality Disorder leads to socially deviant behavior with a lack of remorse.

Key Points

  • Cluster B Personality Disorders
    • Wild: characterized by emotional / relational problems
    • Narcissistic Personality Disorder
      • Overly self-important/grandiose, craves approval, lacks empathy, envious of others
    • Antisocial Personality Disorder
      • Engages in deviant behaviors (criminality, aggression) with lack of remorse
    • Borderline Personality Disorder
      • Unstable mood and self-image, impulsive (tendency for self-harm)
      • Unstable relationships, afraid of abandonment
    • Histrionic Personality Disorder
      • Attention-seeking, provocative or dramatic behavior