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Trigeminal Neuralgia

What is TN?

Trigeminal neuralgia (TN) is considered to be one of the most painful afflictions known to medical practice. TN is a disorder of the fifth cranial (trigeminal) nerve. The typical or “classic” form of the disorder (called TN1) causes extreme, sporadic, sudden burning or shock-like facial pain in the areas of the face where the branches of the nerve are distributed – lips, eyes, nose, scalp, forehead, upper jaw, and lower jaw. The pain episodes last from a few seconds to as long as two minutes. These attacks can occur in quick succession or in volleys lasting as long as two hours. The “atypical” form of the disorder (called TN2), is characterized by constant aching, burning, stabbing pain of somewhat lower intensity than TN1. Both forms of pain may occur in the same person, sometimes at the same time.

Biology of TN

The trigeminal nerve is one of 12 pairs of nerves that are attached to the brain. The nerve has three branches that conduct sensations from the upper, middle, and lower portions of the face, as well as the oral cavity, to the brain. More than one nerve branch can be affected by the disorder. Rarely, both sides of the face may be affected at different times in an individual, or even more rarely at the same time (called bilateral TN).


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What Causes TN?

TN is associated with a variety of conditions. It can be caused by a blood vessel pressing on the trigeminal nerve as it exits the brain stem, which prompts the wearing away or damage to the protectiv

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