Trigeminal neuralgia caused by herpes zoster requires causative and symptomatic treatment, and can be relieved mainly by medication, closed therapy and nutritional therapy. 1. Medication: For the cause of herpes zoster, antiviral medication can be used, such as acyclovir antiviral ointment to be applied to the area of herpes. For trigeminal neuralgia, oral antiepileptic drugs such as carbamazepine can be taken to inhibit abnormal nerve discharges, thus relieving the pain. 2. Closure therapy: For those who have no obvious effect of drug treatment, closure therapy can be used, using anhydrous alcohol, glycerin or other chemicals to inject into the trigeminal nerve branches or semilunar ganglion, so as to close the trigeminal nerve, so that the corresponding pain sensation disappears, and to achieve the effect of pain relief. 3. Nutritional therapy: to relieve pain through nutritional therapy for the trigeminal nerve, a large amount of vitamin B12 or methylcobalamin and other nutritive nerve drugs can be taken. If the phenomenon of postherpetic trigeminal neuralgia occurs, it is recommended to consult a doctor in a timely manner and carry out scientific and systematic treatment under the guidance of a physician, so as to effectively relieve the pain and remove the cause of the disease.