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Carbamazepine blood dyscrasia — GPhC CRA MCQ

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ModerateCNS TherapeuticsCarbamazepine blood dyscrasiaGPhC CRA

A patient taking carbamazepine for trigeminal neuralgia reports a sore throat, mouth ulcers and bruising. He asks whether to continue until the next routine review. What monitoring is required?

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

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Correct answer: A — Refer urgently for blood count assessment

Carbamazepine can rarely cause serious blood disorders. Symptoms such as unexplained bruising, mouth ulcers, fever, or sore throat should prompt urgent assessment, including full blood count. Continuing without review could miss a serious adverse reaction.

Reference: BNF