Psych CASC / OSCE · Addiction psychiatry — pharmaceutical and OTC misuse
Explain codeine dependence and OAT to a sceptical patient — CASC communication station
MRCPsych/FRANZCP-style communication station: explain pharmaceutical opioid dependence, combination-product harm, Australian rescheduling context, OAT options, and motivational engagement without colluding with minimisation.
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Target exams
Station brief
Format. Communication station, approximately 7–10 minutes after reading. Examiner may play the patient.[1]
Candidate instructions. Build rapport. Explain how pharmacy-sourced codeine combinations can still cause dependence and liver risk. Outline treatment options including OAT and structured alternatives. Respond to stigma. Agree a collaborative plan and check understanding.[2][3]
Candidate scenario
LFTs are abnormal in a pattern concerning for paracetamol load; she is haemodynamically stable. She uses 20–30 combination tablets most days, has morning withdrawal, and failed unsupervised cut-downs. She cares for a teenage child and fears being reported as an “addict.” You may discuss buprenorphine or methadone in plain language, naloxone, single-prescriber plans, and non-opioid pain strategies.[2][3][5]
Marking domains
- Empathy without colluding with “chemist medicines can’t addict” myth
- Clear explanation of dependence and combination-product liver risk
- Accurate, non-stigmatising description of OAT options and evidence frame
- Shared decision-making and safety (naloxone, prescribing boundaries)
- Teach-back and follow-up plan [1][2][3]
Reveal assessor key
Open. Name role/time; ask her main concerns (liver, job, stigma). Reflect emotion: fear of the addict label is common when medicines start in a pharmacy (Cooper).[1]
Explain dependence. Daily codeine can produce tolerance and withdrawal; needing more tablets and failed cut-downs is the medical syndrome clinicians call opioid dependence — it is about control and harm, not moral failure or injecting.[2]
Combination risk. The paracetamol (or ibuprofen in other brands) can damage organs even when the person “only” wants the codeine effect; her LFT signal is a reason to change course, not a punishment.[5]
Policy context (if asked). Australia made codeine prescription-only in 2018 because population harms were recognised; that policy reduced some community harms but people already dependent still deserve treatment.[4]
Options. (1) Structured supported taper with addiction follow-up if appropriate; (2) buprenorphine or methadone programmes — medicines that reduce craving and withdrawal and are used for dependence on pharmaceutical opioids as well as heroin (Cochrane frame in clinician language: “research supports these treatments for people dependent on strong pain/codeine medicines, not only street heroin”). Address methadone stigma honestly; offer buprenorphine if preferred and suitable. Provide take-home naloxone teaching.[3]
Boundaries. One prescriber, one pharmacy, monitoring for safety — framed as protecting her licence to work and her liver, not as police work.[2]
Close. Summarise agreed next step (clinic appointment, bloods, naloxone kit), written info, crisis contacts; teach-back of one key safety message.[1][3]
References
- [1]Cooper RJ. Over-the-counter medicine abuse: a qualitative study BMJ Open, 2013.PMID 23794565
- [2]Nielsen S, et al. Identifying and treating codeine dependence: a systematic review Med J Aust, 2018.PMID 29848240
- [3]Nielsen S, Tse WC, Larance B. Opioid agonist treatment for pharmaceutical opioids Cochrane Database Syst Rev, 2022.PMID 36063082
- [4]Cairns R, et al. Codeine use and harms in Australia after re-scheduling Addiction, 2020.PMID 31577369
- [5]Noghrehchi F, Cairns R, Buckley NA. Paracetamol poisoning admissions after codeine re-scheduling Int J Drug Policy, 2023.PMID 37116402