Narcissistic personality disorder causes humans to think about their appearance.
==== Cluster B (dramatic, emotional or erratic disorders) ====Cluster B personality disorders are characterized by dramatic, impulsive, self-destructive, emotional behavior and sometimes incomprehensible interactions with others
 It is most characteristic of obsessivecompulsive personality disorder; the opposite of it known as impulsivity (here: an aspect of openness that shows a tendency to behave unusually or autistically) is characteristic of schizotypal and borderline personality disorders

