TD – Persistent After Drug Cessation — SCE Neurology MCQ

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ModerateMovement DisordersTD – Persistent After Drug CessationSCE Neurology

A 62-year-old man has involuntary jaw and tongue movements after 20 years on chlorpromazine. Movements persist 4 months after stopping. What is the diagnosis?

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Correct answer: C — Tardive dyskinesia

TD is caused by long-term dopamine receptor-blocking agents. It can persist or worsen after drug cessation. A: HD has chorea and family history. C: Acute dystonia occurs early. D: Sustained jaw postures. E: Combined blepharospasm and oromandibular dystonia.

Reference: BNF; NICE CG178