This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Personality Disorders, Subject name: Psychiatry
[{'content': 'A young lady was admitted with h/o taking over dose of diazepam after broken affair. She has history of slitting her wrist previously. Most likely diagnosis is: \nSelect and explain. \nA. Narcissistic PD, B. Dependent PD, C. Borderline PD, D. Histrionic PD', 'role': 'user'}, {'content': 'Answer: C \nExplanation: 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.', 'role': 'assistant'}]