Trigeminal neuralgia

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Trigeminal neuralgia (TN or TGN), also called Fothergill disease, tic douloureux, or trifacial neuralgia, is a long-term pain disorder that affects the trigeminal nerve, the nerve responsible for sensation in the face and motor functions such as biting and chewing. It is a form of neuropathic pain. There are two main types: typical and atypical trigeminal neuralgia. The typical form results in episodes of severe, sudden, shock-like pain in one side of the face that lasts for seconds to a few minutes. Groups of these episodes can occur over a few hours. The atypical form results in a constant burning pain that is less severe. Episodes may be triggered by any touch to the face. Both forms may occur in the same person. Pain from the disease has been linked to mental-health issues, especially depression. The exact cause is unknown, but believed to involve loss of the myelin of the trigeminal nerve. This might occur due to nerve compression from a blood vessel as the nerve exits the brain stem...

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