Most patients have taken carbamazepine. Statistically, this drug provides complete pain relief in 70% of patients and relief in 20% of patients while on the drug. However, with long-term use of this drug, most patients experience drug tolerance, which means that the dose of the drug becomes higher and higher, but the efficacy of the drug becomes worse and worse. Many patients experience intolerable drug side effects. It is wise to choose a radical pain treatment as early as possible. Non-pharmacological treatments for trigeminal neuralgia can be divided into two categories: 1. Nerve function destruction: including nerve branch closure, ganglion closure, nerve branch severing, nerve root partial severing, radiofrequency electrocoagulation of trigeminal ganglion, etc. These methods all require destruction of nerves and nerve root. These methods require destruction of nerves, resulting in loss of nerve function, loss of sensory function (sensory numbness) in exchange for pain relief, with the gradual recovery of nerve sensory function, pain also gradually relapsed. The treatment process is painful, the effect is not lasting, facial numbness, corneal ulcers, chewing difficulties, etc., are the shortcomings of these treatments. 2, neurological function preservation class: not only does not destroy nerve function, but also can cure trigeminal neuralgia, there are only two types: non-invasive (non-cranial) head gamma knife treatment and invasive cranial microvascular decompression, can really cure trigeminal neuralgia of these two methods. Open microvascular decompression: After craniotomy, the blood vessels compressing the nerve roots are identified and freed, and then filled with Tefleon cotton to separate the blood vessels from the nerves. The recent efficiency of the procedure is about 90%, but it may recur due to the dislodgement of the cotton sheet. Due to the complex etiology of trigeminal neuralgia, only 70% of patients can undergo microvascular decompression during surgery, except for 15% of patients who have tumors that need to be removed, and the other 15% of patients who cannot completely identify the vascular compression during surgery, which may be caused by demyelination of the nerve. Numbness. It should be emphasized that the surgical mortality rate of microvascular decompression varies from hospital to hospital surgical centers (0.1% to 1%), but the risk of causing death is always present. Head Gamma Knife for trigeminal neuralgia, which is a non-surgical treatment method, is the most advanced device for the treatment of trigeminal neuralgia. Its efficiency is over 90%, and the cure rate is over 80%. It can achieve the purpose of pain relief without leaving complications. No trauma, no pain, but also safe, the efficacy is also the most satisfactory. Head gamma knife treatment of trigeminal neuralgia began in 1968, the number of patients treated has increased year by year, long-term follow-up efficacy is very positive, no side effects. It has now become the preferred treatment option for trigeminal neuralgia. The head gamma knife is not a real scalpel, but a very advanced radiation therapy device. It adopts the principle of stereotactic, through the multi-arc multifield spatial focus method, many small beams of gamma rays converge on the trigeminal nerve root in all directions, forming the focus of irradiation, a one-time high dose (80-85Gy) irradiation, like surgery to achieve the purpose of radical treatment of trigeminal neuralgia. It can reduce the sensitivity of nerve roots to conduct pain and block nociceptive conduction, without destroying the trigeminal nerve roots and without affecting the normal function of nerve fibers. The head gamma knife treatment of trigeminal neuralgia features: 1, non-invasive treatment, no bleeding, infection and other complications, not to mention the possibility of death; pain is minimal, no significant damage to the normal brain. 2, short treatment period, most of the one-time treatment, the end of the treatment on the same day; patients do not feel obvious changes before and after treatment, not affected by work and study. 3, the efficacy of the treatment is predictable, in most cases before the treatment can be expected to change after the treatment. The factors leading to sudden changes in the disease are much less than those of surgical treatment. Its efficiency is over 90%, and the cure rate is over 80%. 4.The treatment cost is fixed, and it will not increase the treatment cost in the process of treatment, nor will it increase the burden of the family because the treatment period is too long. 5.The efficacy of the treatment will gradually appear, and there will not be too many adverse reactions. No complications after treatment, no facial numbness will occur.