What is trigeminal neuralgia?

Trigeminal neuralgia (TN) is a condition that causes pain in the face and head. The pain is usually on one side of the face. It is related to the trigeminal nerve, which runs from the brain to the side of the face.

What is neuralgia?

Neuralgia is a sharp type of pain that is associated with a problem in a nerve or nerves. It can range in intensity from mild to severe.

Neuralgia is most often associated with two unrelated conditions, trigeminal neuralgia and post-herpetic neuralgia.