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Trigeminal neuralgia (TN), also called tic douloureux, is a chronic pain condition that affects the trigeminal or 5th cranial nerve, one of the most widely distributed nerves in the head.
Email. Print. Trigeminal neuralgia (tic douloureux) is a disorder of a nerve at the side of the head, called the trigeminal nerve. This condition causes intense, stabbing or electric shock-like pain in the lips, eyes, nose, scalp, forehead and jaw.Although trigeminal neuralgia is not fatal, it is extremely painful.auses and Risk Factors. The pain of trigeminal neuralgia is usually caused by pressure on the trigeminal nerve at the base of the brain. The pressure can be result from: 1  A stroke that affects the lower part of the brain, where the trigeminal nerve enters. 2  A tumor that pushes on the nerve.