Psych CASC / OSCE · General adult psychiatry — personality disorders
Explain histrionic personality disorder and the treatment plan — CASC communication station
MRCPsych/FRANZCP-style communication station: explain HPD without stigma, outline differentials and frame-based therapy, clarify limited medication role, address self-harm seriousness, check understanding.
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Target exams
Station brief
Format. Communication station, approximately 7–10 minutes active time after reading. You are the psychiatry registrar in the outpatient clinic. [1]
Candidate instructions. Explain histrionic personality disorder in plain language without stigma, clarify how it differs from bipolar disorder and borderline personality disorder, outline why structured talking therapy with clear boundaries is the main treatment, clarify that medication treats depression or anxiety rather than “curing personality,” take self-harm seriously, and check understanding. The examiner plays the patient. [1][2]
Candidate scenario
Your patient meets DSM criteria for HPD with longstanding need to be the centre of attention, theatrical shallow affect, provisional intimacy, and impressionistic speech. She is not currently manic. She had a recent low-lethality overdose after a breakup. You plan psychotherapy referral with a clear frame and will discuss SSRI options if depression is significant. [1][3]
Marking domains
- Empathy, structure and agenda-setting
- Non-stigmatising explanation of HPD as a treatable pattern of attention-seeking emotional style
- Clear differentials from bipolar (episode, sleep/energy) and BPD (abandonment, emptiness, self-harm regulation)
- Named psychotherapy plan with frame/limits
- Accurate medication expectations
- Explicit seriousness of self-harm without pejorative dismissal
- Safety-netting after rejection
- Checks understanding [2][3]
Reveal assessor key
Open and agenda-set. Name time available; ask her main fears about the label first (drama queen, not taken seriously, untreatable). [1]
Explain diagnosis. "Histrionic personality disorder describes a long-term pattern of intense, dramatic emotional expression and a strong need for attention in relationships, with feelings that can shift quickly and connections that sometimes feel deeper than they have time to be. It is a recognised pattern that can cause real distress — it is not a moral insult and it does not mean we will ignore risk or distress." Acknowledge that labels are imperfect and sometimes overlap with other patterns. [1][2]
Explain differentials simply. Bipolar: episodes of high energy with reduced need for sleep over days, not only lifelong style. Borderline: often more driven by fear of abandonment, emptiness, and self-harm as a way to manage overwhelming feelings — some people meet both patterns. [2]
Explain treatment. Main help is structured talking therapy with clear, consistent boundaries. Together you work on building a more stable sense of self that does not depend only on being the centre of attention, and on forming relationships that can be close without crisis. Tablets do not rewire personality on their own; antidepressants can help if depression is present, alongside therapy. [3]
Self-harm and safety-net. Self-harm is taken seriously even if others called it theatrical; plan early contact if mood drops after rejection. [1]
Close. Summarise, teach-back, written information, follow-up appointment, hope grounded in treatability of interpersonal patterns. [1][3]
References
- [1]Bakkevig JF, Karterud S Is the Diagnostic and Statistical Manual of Mental Disorders, Fourth Edition, histrionic personality disorder category a valid construct? Compr Psychiatry, 2010.PMID 20728002
- [2]Blagov PS, Westen D Questioning the coherence of histrionic personality disorder: borderline and hysterical personality subtypes in adults and adolescents J Nerv Ment Dis, 2008.PMID 19008729
- [3]Babl A, Gómez Penedo JM, Berger T, et al. Change processes in psychotherapy for patients presenting with histrionic personality disorder Clin Psychol Psychother, 2023.PMID 35776063