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Carbamazepine rash — GPhC CRA MCQ

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ModerateCNS TherapeuticsCarbamazepine rashGPhC CRA

A patient recently started carbamazepine and now has a widespread blistering rash and mouth ulcers. What is the most appropriate action?

Educational content. Not a substitute for clinical judgement or local policy.

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Correct answer: A — Stop supply and arrange urgent medical assessment

A blistering rash with mucosal involvement may represent a severe cutaneous adverse reaction. In this vignette, "Stop supply and arrange urgent medical assessment" is the safest single best answer. The other options are less appropriate because they miss the key clinical risk, conflict with UK medicines guidance, or delay needed review.

Reference: BNF; NICE CKS