<prompt> A young lady was admitted with ho taking over dose of diazepam after broken affair. She has history of slitting her wrist previously. Most likely diagnosis is:Narcissistic PDDependent PDBorderline PDHistrionic PD  <response>: The repetitive episodes of self - harming behavior after stressors is suggestive of borderline personality disorder. It comes under Cluster B Personality disorder . In this person is Emotionally unstable and have impulsive nature with history of unstable relationships. These person use mechanism of splitting eg. think person is either good devil. Splitting is an unconscious tendency to categorize people as either overly idealized or denigrated, often out of intolerance of ambiguity Other types of cluster B PD are Histrionic PD, Narcissistic PD and Antisocial PD. 