Trigeminal neuralgia, also known as tic douloureux, sometimes is described as the most excruciating pain known to humanity. The pain typically involves the lower face and jaw, although sometimes it affects the area around the nose and above the eye. This intense, stabbing, electric shock-like pain is caused by irritation of the trigeminal nerve, which sends branches to the forehead, cheek and lower jaw. It usually is limited to one side of the face. Part of the controversy that surrounds the pathophysiology of TGN is based on misquotations and inaccuracies. Against popular belief, sensory impairment in TGN—albeit small—has been documented by several groups, both using quantitative sensory testing and neurophysiological methods. As already mentioned, these changes normalize following successful MVD. Simpler, less invasive procedures are well tolerated but usually provide only short-term relief. At this point, further and perhaps more invasive operations may be required, and with these procedures the risk of the disabling adverse effect of anesthesia dolorosa increases. Brazil people around 4,890,530 among the total population are suffering from this disease that is 4.28% of the population effected.