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Trigeminal Neuralgia Second Line — MFDS Part 1 MCQ

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HardPharmacologyTrigeminal Neuralgia Second LineMFDS Part 1

A 62-year-old patient has classical trigeminal neuralgia affecting the right maxillary and mandibular divisions. The diagnosis has been confirmed, adherence is satisfactory, and carbamazepine has been titrated to the maximum tolerated dose, but frequent attacks continue. What is the single most appropriate next step?

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

Reveal the answer and explanation

Correct answer: A — Seek specialist advice and consider early referral for alternative therapy

Explanation lettering: D = shown as B · B = shown as C · E = shown as D · C = shown as E

The correct answer is **A**. NICE recommends seeking expert advice and considering early referral to a specialist pain or condition-specific service when carbamazepine is ineffective, not tolerated or contraindicated. Alternative agents such as oxcarbazepine, lamotrigine, gabapentin, pregabalin or baclofen may be considered by specialists, but UK national guidance does not designate oxcarbazepine or gabapentin as a unique universal “first choice” after carbamazepine failure. These uses are generally unlicensed for trigeminal neuralgia, so options B and C inappropriately bypass specialist input. Paracetamol and NSAIDs such as ibuprofen do not adequately treat the brief neuropathic paroxysms of trigeminal neuralgia and are not appropriate preventive treatments.

Reference: National Institute for Health and Care Excellence. Neuropathic pain in adults: pharmacological management in non-specialist settings (CG173), recommendation 1.1.14. 2013 (current recommendation accessed 2026). https://www.nice.org.uk/guidance/CG173/chapter/recommendations