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Trigeminal neuralgia (TN), also called tic douloureux, is a condition that is characterized by intermittent, shooting pain in the face.Trigeminal neuralgia affects the trigeminal nerve, one of the largest nerves in the head. The trigeminal nerve sends impulses of touch, pain, pressure, and temperature to the brain from the face, jaw, gums, forehead, and around the eyes. Because the exact pathophysiology remains controversial, the etiology of trigeminal neuralgia (TN) may be central, peripheral, or both. The trigeminal nerve (cranial nerve V) can cause pain, because its major function is sensory. Usually, no structural lesion is present (85%), although many investigators agree that vascular compression, typically venous or arterial loops at the trigeminal nerve entry into the pons, is critical to the pathogenesis of the idiopathic variety. This compression results in focal trigeminal nerve demyelination. The etiology is labeled idiopathic by default and is then categorized as classic trigeminal neuralgia. Depression is often seen in patients with trigeminal neuralgia; thus, this underlying depression should be adequately treated. Tricyclic antidepressants (eg, amitriptyline, nortriptyline), as well as sodium valproate or pregabalin, have not been well studied. Amitriptyline (Elavil) can be tried, but the success rate is low. China people around 4,458,090 among the total population are suffering from this disease that is 2.68% of the population effected.