Radiofrequency technology has good therapeutic effects on common clinical conditions such as trigeminal neuralgia, cervicogenic headache, occipital neuralgia, intercostal neuralgia, postherpetic neuralgia, cervical spondylosis, lumbar leg pain, intervertebral disc herniation, myofasciitis, and lower limb vasculitis. Radiofrequency thermal coagulation technology can safely and efficiently solve trigeminal neuralgia. Radiofrequency thermal coagulation technology mainly uses foreign temperature-regulated radiofrequency advanced instruments, puncture under the guidance of CT or DSA, the needle tip does not damage other nerves, under superficial intravenous anesthesia, the needle tip reaches the lesion and acts on the root of the trigeminal nerve, so that the lesion nerve no longer transmits pain. The patient feels no pain during the whole treatment, and after the treatment will feel very light or no numbness of the skin mucosa at all, and the pain disappears. The technique has a high safety and low recurrence rate. Principle of radiofrequency thermocoagulation Radiofrequency thermocoagulation is a minimally invasive local thermal therapy technique. The radiofrequency instrument sends out a high frequency radio current to produce an alternating electric field, which causes the water molecules around the electrode target tissue to oscillate and rub to generate heat. Using this principle, the temperature (42-98°C) and treatment time (1-3 minutes) are adjusted to act on different parts of the body to achieve the treatment purpose. Radiofrequency thermal coagulation inhibits the nociceptive fibers Aδ and C fibers that conduct pathological pain, while the fibers that conduct tactile and motor functions are preserved, thus blocking the transmission of pain signals to the spinal nerves and controlling pain. For the nucleus pulposus tissue in the herniated or bulging disc, radiofrequency thermal coagulation can cause ionic oscillation and heat generation, and the nucleus pulposus tissue will be shrunken by heat, the volume will be reduced, and the intravertebral disc pressure will be reduced, and the fascia around the disc will be tightened by heat to reduce or eliminate the pressure of the herniated tissue on the nerve root, so as to achieve the purpose of pain relief. Advantages of radiofrequency thermocoagulation 1, the procedure is less invasive and less dangerous, and serious complications rarely occur; 2, the temperature can be better monitored by the available thermocouple electrodes, and the temperature magnitude can be effectively controlled; 3, electrical stimulation localization and electrical impedance monitoring can be performed; 4, most radiofrequency thermocoagulation procedures can be performed under local anesthesia; 5, the pain relief effect is good, eliminating pain and preserving the sense of touch; 6, the treatment can be repeated when needed.