This pain may be felt in any or all of the following: the ear, eye, lips, nose, scalp, forehead, cheeks, teeth, or jaw and alongside of the face. In all cases, though, an excessive burst of nervous activity from a damaged nerve causes the painful attacks.
The cardinal symptom of Trigeminal neuralgia is the sudden, severe, electric shock-like, or stabbing pain that lasts several seconds.

Another defining feature of trigeminal neuralgia is the trigger zone-a small area in the central part of the face, usually on a cheek, nose, or lip, that, when stimulated, triggers a typical burst of pain. The pain usually is felt on one side of the face but certain people can have it on both sides time to tome. A TN sufferer will sometimes seek the help of numerous clinicians before a firm diagnosis is made.
Theblood vessels rubes against the trigeminal nerve root this constant rubbing with each heartbeat wears away the insulating membrane of the nerve; causing the nerve cell to shed the protective and conductive coating (demyelination).

As there are currently no specific tests available to confirm the diagnosis of trigeminal neuralgia.

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