Trigeminal neuralgia is a painful condition that many patients suffer from. In order to enable patients to detect and treat the disease as early as possible, the following features related to trigeminal neuralgia are summarized. Six characteristics of trigeminal nerve pain! 1. The pain is severe like cutting, burning, stabbing or electric shock, which starts suddenly at the onset and stops immediately after a few seconds or minutes, without any uncomfortable symptoms after stopping. 2. The trigeminal nerve is symmetrically distributed on both sides of the face, with three branches on each side, mainly governing the sensation of the face, teeth, cornea, nasal cavity, mouth and lips, most of the scalp and meninges, so trigeminal neuralgia occurs in these parts. The onset of trigeminal neuralgia often occurs in one or several parts of the face, and it is rare to see bilateral onset at the same time. The onset of trigeminal neuralgia can be easily triggered by external stimuli, such as cold wind blowing on the face, patients eating too hot or too cold food, chewing too vigorously, talking with mouth wide open, washing face roughly, etc. The onset of trigeminal neuralgia can be triggered. 4. During the attack, the affected half of the face can be spasmodically distorted, and sometimes sympathetic syndrome occurs after the attack is terminated. The main symptoms are white face, then flushing, conjunctival congestion, accompanied by lacrimation, runny nose and salivation. 5. The onset of the disease is periodic, once every few days, or once every few weeks or months, and may occur dozens of times a day in severe cases. Seasonal attacks may also occur. 6. The onset is often affected by the patient’s mental and psychological condition. If the patient is often in a bad mood and easily irritated, the onset will be more frequent and the pain will be more intense. Microvascular decompression is the preferred surgical method for primary trigeminal neuralgia, and it is the only surgery that can cure trigeminal neuralgia at present. Under general anesthesia, a 4-cm incision is made behind the affected ear along the hairline, and the skin and muscles are retracted to reveal the mastoid root. The dura is cut and the cerebrospinal fluid is aspirated under the microscope, and the arachnoid is cut and the trigeminal nerve root is explored to find the responsible vessel (it can be one or more) that is compressing the trigeminal nerve root. (in case of rock vein compression, the rock vein must be dissected). The responsible vessels are freed by microdissection and then padded with tefflon surface. The procedure is minimally invasive and has a good prognosis. Indications: Suitable for primary trigeminal neuralgia in which all pharmacological treatments have failed, especially in younger patients. Contraindications: advanced age and those with functional impairment of vital organs such as the heart, liver and kidney who cannot tolerate the procedure.