In trigeminal neuralgia management, which of the following is described as a muscle relaxant used for symptom control?

• A. Carbamazepine
• B. Gabapentin
• C. Oxcarbazepine
• D. Baclofen

Answer: (D)

The main idea is distinguishing a muscle relaxant from the anticonvulsants that are commonly used to treat trigeminal neuralgia. Baclofen is a muscle relaxant that works as a GABA-B receptor agonist, which decreases motor neuron excitability and lowers muscle tone. In trigeminal neuralgia, reducing jaw muscle spasm or the muscle tension around the face can help alleviate additional pain and discomfort that accompany episodes, providing symptomatic relief beyond nerve-focused therapies.

The other drugs listed are anticonvulsants that target nerve excitability to prevent paroxysmal facial pain. Carbamazepine and oxcarbazepine stabilize hyperexcitable trigeminal nerve membranes, lowering firing and pain episodes, while gabapentin modulates neuropathic pain signals. They aren’t described as muscle relaxants, which is why baclofen fits the description for symptom control via muscle relaxation.