Psych CASC / OSCE · Old age psychiatry — neurocognitive disorders
Explain young-onset dementia diagnosis and plan to patient and partner — CASC communication station
MRCPsych/FRANZCP-style communication station: explain YOD vs EOAD, outline work-up and genetics sensitively, discuss donepezil if AD pathway, safety-net work/driving/family, and 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 cognitive disorders clinic. [1][2]
Candidate instructions. Explain young-onset dementia in plain language; distinguish the age label from a specific cause such as Alzheimer disease; outline key tests; discuss genetics only with sensitivity and counselling; cover work, driving, and family impact; explain that if Alzheimer disease is confirmed a cholinesterase inhibitor such as donepezil may be trialled; avoid promising cure; check understanding. [1][3][4][7]
Candidate scenario
Your patient has progressive multidomain cognitive decline starting at age 53 with functional impairment at work. MRI (educational context) has excluded a mass lesion and is compatible with a neurodegenerative pattern under specialist review. You are considering an Alzheimer-pathway symptomatic trial pending final aetiologic formulation and have offered genetic counselling because of a possible family history. The partner is frightened about the teenagers "getting the gene." Insight is partial. [1][3][7]
Marking domains
- Empathy for working-age loss (job, identity, parenting) without false reassurance
- Accurate plain-language definition: onset before 65, not automatically "only Alzheimer"
- Clear investigation and genetics message with counselling, not coercion
- Honest treatment limits; named symptomatic option if AD (donepezil principles)
- Antipsychotic caution if behaviour medicines are raised
- Safety-netting: driving, work, finances, follow-up, crisis contacts
- Teach-back / checks understanding [4][5][6]
Reveal assessor key
Open and agenda-set. Greet both; acknowledge shock of a dementia diagnosis in midlife. Ask their top questions (Is it Alzheimer? Will the children get it? Can he work/drive? Is there a tablet?). [1]
Explain diagnosis. "Young-onset dementia means the symptoms of dementia started before age 65. It is an age description. Several brain diseases can cause it — Alzheimer disease is one common cause, but frontotemporal and other conditions also matter, which is why we take a careful history, examine the nervous system, do blood tests, and use MRI and sometimes spinal-fluid or genetic tests."[1][2][7]
Explain care. "There is not yet a cure that stops every form of young-onset dementia. If the pattern is Alzheimer disease, medicines such as donepezil can modestly help symptoms for some people — often starting at 5 milligrams daily by mouth and increasing to 10 milligrams after about four weeks if side-effects allow, with monitoring for stomach upset and heart-rate effects. Strong tranquillisers (antipsychotics) are not routine brain-protection tablets; they can increase risk of harm and are reserved for dangerous symptoms after other approaches."[3][4][5]
Genetics and family. "Because dementia came early and there may be family history, we can offer genetic counselling. Testing is optional. It has implications for relatives, so we will not rush a blood test without that support and a clear plan for results."[7]
Work, driving, children. "We need to talk honestly about driving safety and work duties. Capacity is about specific decisions — understanding, weighing up, and choosing — not a single score. We will involve occupational support and plan legal/financial paperwork while your partner can still take part. For the teenagers, we focus on stability, age-appropriate explanation, and support services rather than frightening gene statistics today."[6]
Close. Summarise, written information, YOD/carer supports, follow-up, teach-back. [1][6]
References
- [1]Rossor MN, Fox NC, Mummery CJ, Schott JM, Warren JD The diagnosis of young-onset dementia Lancet Neurol, 2010.PMID 20650401
- [2]Hendriks S, Peetoom K, Bakker C, et al. Global Prevalence of Young-Onset Dementia: A Systematic Review and Meta-analysis JAMA Neurol, 2021.PMID 34279544
- [3]McKhann GM, Knopman DS, Chertkow H, et al. The diagnosis of dementia due to Alzheimer's disease Alzheimers Dement, 2011.PMID 21514250
- [4]Birks JS, Harvey RJ Donepezil for dementia due to Alzheimer's disease Cochrane Database Syst Rev, 2018.PMID 29923184
- [5]Schneider LS, Dagerman KS, Insel P Risk of death with atypical antipsychotic drug treatment for dementia JAMA, 2005.PMID 16234500
- [6]Appelbaum PS Clinical practice. Assessment of patients' competence to consent to treatment N Engl J Med, 2007.PMID 17978292
- [7]Masellis M, Sherborn K, Neto P, et al. Early-onset dementias: diagnostic and etiological considerations Alzheimers Res Ther, 2013.PMID 24565469