Secondary trigeminal neuralgia, also known as symptomatic trigeminal neuralgia, is due to secondary damage to the trigeminal nerve caused by various organic lesions both inside and outside the skull, which in turn leads to trigeminal nerve pain, and its manifestations are similar to primary trigeminal neuralgia, with the difference that secondary trigeminal neuralgia is less painful and persistent, with hyperalgesia in the distribution area of the trigeminal nerve, often combined with other symptoms of cerebral nerve damage (caused by various organic lesions both inside and outside the skull). due to various organic lesions) with a clear etiology, such as multiple sclerosis, medullary cavitation, primary or metastatic skull base tumors, etc., without a trigger point (i.e., a site where an attack can be induced by touch or other stimulation). Treatment: 1. Treatment of the primary disease: first, we must find the primary lesion, clarify the cause, and treat the primary disease; 2. Drug treatment: second, we can use carbamazepine and phenytoin sodium for pain relief, which has rapid pain relief, but can only temporarily relieve, easy to relapse, and has great toxic side effects, such as the appearance of vertigo, weakness, malfunction of the liver, kidney, and bone marrow; 3. Nerve avulsion: using surgical methods, the 4.Acupuncture treatment: select the main acupuncture point, and then select the matching acupuncture point according to the painful area, and also needling the supraorbital foramen, infraorbital foramen, chin foramen and other nerve access areas, acupuncture should produce needle sensation to ensure the efficacy, this method is convenient and quick to apply, safe, with little side effects, but can only temporarily relieve the pain, and cannot achieve the effect of radical cure; 5.Painless radiofrequency therapy: under the guidance of image Under the guidance of localization diagnosis, the nerve root to be treated is accurately positioned and treated with radiofrequency, this therapy will not affect the function of its normal nerve sensation and temperature sensation. This method is accurate, and there is no risk, good safety, can quickly relieve pain, not easy to relapse. Cautions: 1. Patients with secondary trigeminal neuralgia should pay attention to hygiene to prevent infection: infection may produce adverse stimulation of the trigeminal nerve, thus triggering or aggravating secondary trigeminal neuralgia; 2. Do not chew violently and speak loudly, otherwise you will pull the old lesion or directly pull the trigeminal nerve, thus triggering trigeminal nerve pain or aggravating the pain; 3. Maintain a good state of mind in life and avoid emotional excitement. The trigeminal nerve pain can be triggered or aggravated by the pain; 3.