Location and symptoms
Any ache that arises from a nerve is called neuralgia. The trigeminal nerve supplied the face and the front part of the brain. Spontaneous discharge of the trigeminal nerve causes sudden, severe stabbing pains in the cheek and upper gum, or in the jaw and lower gum, known as trigeminal neuralgia. Usually affects older people and women more than men. Recurs irregularly.
Since branches of the trigeminal nerve are responsible for conveying pain sensation from the eye and sinuses, disease of these structures may cause a headache in the centre of the forehead. The trigeminal nerve can become infected by the virus of shingles (herpes zoster virus). Compression or irritation of the nerve fibres, commonly caused by the progressive lengthening of a branch of an artery as it hardens with age, multiple sclerosis, and malocclusion
Medication such as anti-epileptic drugs, surgery, dental treatment