Trigeminal neuralgia is a facial pain condition caused by the trigeminal nerve, a cranial nerve that starts at the ear and runs along both sides of the face in three branches: The nerve sends ...

Sufferers say the pain caused by the nerve disorder is so debilitating that they can’t smile, laugh or even make eye contact with another person.

SAN DIEGO — Intravenous (IV) administration of the anticonvulsant fosphenytoin is effective as a fast-acting treatment for acute trigeminal neuralgia ... disabling facial pain disorder that ...

Treatment options are limited for patients with postherpetic neuralgia (PHN), a chronic pain disorder caused by reactivation of the varicella zoster virus. Topical application of capsaicin ...