The narcissistic function of masochism (and sadism).
D000374:Aggression; D003861:Depersonalization; D005084:Exhibitionism; D005260:Female; D005639:Frustration; D006801:Humans; D008297:Male; D008398:Masochism; D009289:Narcissism; D009769:Object Attachment; D009948:Orgasm; D010146:Pain; D010287:Parent-Child Relations; D010553:Personality Development; D012448:Sadism; D012649:Self Concept