Psych CASC / OSCE · Addiction psychiatry — substance-induced mood and anxiety disorders
Explain substance-induced depression and dual plan to a partner — CASC communication station
MRCPsych/FRANZCP-style communication station: explain timing diagnosis, abstinence remission logic, treatment of both axes, and non-moralising alcohol counselling.
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Target exams
Station brief
Format. Communication station, approximately 7–10 minutes active time after reading. You are the psychiatry registrar on the addiction/dual-diagnosis pathway. [1]
Candidate instructions. Explain the working diagnosis of possible alcohol-related (substance-induced) depression to the partner, outline medical detox and suicide safety, discuss why mood often improves with abstinence yet why follow-up and sometimes antidepressants are still needed, describe concurrent alcohol treatment (including possible naltrexone), and check understanding without moralising. The examiner plays the partner. [1][2]
Candidate scenario
Your patient, age 40, has heavy daily alcohol use and 1 month of depressive symptoms while drinking. He has completed early detox safely. Passive suicidal ideation has settled with observation. No prior depression when previously sober for months. Partner asks: "Is this clinical depression forever? Why not a tablet tonight? Will naltrexone change his personality? How long is follow-up for?" [1]
Marking domains
- Empathy, structure, agenda-setting
- Accurate plain-language explanation of induced versus independent depression as a timeline working diagnosis
- Clear suicide safety and medical detox rationale
- Honest discussion of abstinence-related improvement without dismissing risk
- Concurrent dual plan (alcohol + mood), optional named medicines in plain language
- Safety-net and crisis contacts
- Checks understanding [1][2][3][4]
Reveal assessor key
Open. Thank them; name time; ask main worries first. [1]
Explain induced depression. "We think this episode of low mood is closely linked in time to heavy drinking. That is sometimes called substance-induced depression. It is a real medical problem, not a moral failure. We keep an open mind: many people improve a lot as they stay off alcohol; some need longer treatment for an independent depression." [1][2]
Why not automatic tablet tonight. Because mood often improves in the first weeks of abstinence when the depression is mainly alcohol-driven, we may watch carefully with close follow-up if he is safe. If symptoms are severe, dangerous, or look like independent depression, we start an antidepressant earlier — for example sertraline at a low daily dose with monitoring. It does not erase personality when used carefully. [2][3]
Alcohol treatment. Stopping or cutting alcohol is treatment for the mood as well as the addiction. Medicines such as naltrexone can reduce craving/return to heavy drinking for some people; we check liver tests and that he is not on opioids. We treat both problems together, not one after the other. [3][4]
Follow-up. Dual plan: mental health plus alcohol support, partner education, early-warning signs (mood drop, craving, binge), crisis contacts, medication review at about 2–4 weeks. [4]
Close. Summarise, invite questions, written information, next appointment. [1]
References
- [1]Schuckit MA, Tipp JE, Bergman M, et al. Comparison of induced and independent major depressive disorders in 2,945 alcoholics Am J Psychiatry, 1997.PMID 9210745
- [2]Brown SA, Schuckit MA Changes in depression among abstinent alcoholics J Stud Alcohol, 1988.PMID 3216643
- [3]Pettinati HM, Oslin DW, Kampman KM, et al. A double-blind, placebo-controlled trial combining sertraline and naltrexone for treating co-occurring depression and alcohol dependence Am J Psychiatry, 2010.PMID 20231324
- [4]Drake RE, Mercer-McFadden C, Mueser KT, et al. Review of integrated mental health and substance abuse treatment for patients with dual disorders Schizophr Bull, 1998.PMID 9853791