<prompt> All are cluster B disorders of personality exceptAntisocialNarcissisticAvoidantBorderline  <response>: Cluster B consists of disorders considered dramatic, emotional and erratic and on a psychopathic continuum. They have dramatic, impulsive and erratic features. There are 4 disorders that are classified under cluster B. It includes Antisocial or Dissocial, Histrionic, and Borderline or Emotionally Unstable personality disorders. Ref: A Sho Textbook of Psychiatry, Niraj Ahuja, 7th Edition, pg. no. 113 Kaplan and sadock synopsis of psychiatry, 11th edition, page no.742 