A patient who woke with facial drooping is referred and prescribed a medication used for neuropathic / postherpetic neuralgic pain. Which drug class fits?

Correct answer: A. An anticonvulsant such as gabapentin or carbamazepine

• A. Correct. Anticonvulsants like gabapentin/pregabalin treat neuropathic and postherpetic pain; carbamazepine is first-line for trigeminal neuralgia.
• B. Incorrect. Antibiotics treat bacterial infection, not neuropathic pain.
• C. Incorrect. Antifungals treat fungal infection and have no role in neuralgia.
• D. Incorrect. Bisphosphonates treat bone turnover disorders, not nerve pain.

Note: This source item is worded ambiguously; the consistent thread is the neuropathic-pain medication. Carbamazepine is the classic first-line agent for trigeminal neuralgia.