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Carbimazole sore throat — GPhC CRA MCQ

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ModerateEndocrine TherapeuticsCarbimazole sore throatGPhC CRA

A patient taking carbimazole for hyperthyroidism reports fever, mouth ulcers and a sore throat. She asks whether this can wait until her routine endocrine appointment. What monitoring is required?

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

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Correct answer: B — Advise urgent full blood count and medical review

Carbimazole can rarely cause agranulocytosis. Fever, sore throat, or mouth ulcers require urgent assessment and a full blood count. Continuing without review could expose the patient to serious infection risk.

Reference: BNF