Cluster B personality disorders are a categorization of personality disorders as defined in the DSM-IV and DSM-5. There are four recognized Cluster B personality disorders:
Antisocial personality disorder (DSM-IV code 301.7): a pervasive disregard for the law and the rights of others.
Borderline personality disorder (DSM-IV code 301.83): extreme "black and white" thinking, instability in relationships, self-image, identity and behavior often leading to self-harm and impulsivity.
Histrionic personality disorder (DSM-IV code 301.50): pervasive attention-seeking behavior including inappropriately seductive behavior and shallow or exaggerated emotions.
Narcissistic personality disorder (DSM-IV code 301.81): a pervasive pattern of grandiosity, need for admiration, and a lack of empathy.
