Radiofrequency ablation is a minimally invasive nerve destruction therapy, which uses controlled temperature to act on the ganglion, nerve trunk and nerve root to cause protein coagulation and denaturation, making the nerve membrane potential short-circuit and disappear, so that the whole nerve cannot produce depolarization and the sensory impulse of that nerve cannot be produced, thus achieving pain relief. The mechanism of radiofrequency treatment The unmyelinated fine fibers that conduct nociceptive sensation degenerate at 70-75°C, while the myelinated thick fibers that conduct tactile sensation can tolerate higher temperatures. In this way, the difference in temperature tolerance of different nerve fibers can be exploited to selectively destroy the fine fibers that conduct facial nociception in the semilunar ganglion, while preserving the thick fibers that conduct tactile sensation, which are more resistant to heat. Therefore, using temperature-controlled radiofrequency ablation technology, the nociceptive fibers of the sensory nerve can be selectively destroyed while the tactile fibers and motor fibers are relatively preserved, which can not only relieve pain but also partially or completely preserve tactile and motor sensation. Postoperative instructions Take one carbamazepine (0.1 g) or one half tablet of Dexedrine (0.1 g) every morning and evening for half a month after surgery. If the pain is reduced, the medication can be maintained. If the pain disappears after taking the medication, maintain the medication for 3 more days and then stop it. If side effects (dizziness, diarrhea, allergy) occur after using the medication, please stop the medication and contact your doctor first. In the course of daily life, patients should pay attention to “self-discipline”, whether for life, work, or daily habits. Details are as follows.