Trigeminal neuralgia is generally easy to diagnose. When secondary trigeminal neuralgia is suspected, targeted examination should be conducted. The main diagnostic points of trigeminal neuralgia are as follows: 1. Most of the patients have no pain at all when the attack occurs, and only a very small number of patients still have mild pain. Most of the patients have “trigger points”, i.e., trigger points, which can cause painful attacks, but the attack has just passed, and then stimulating the “trigger points” will not cause attacks. 4, more than 95% of patients with trigeminal nerve is one-sided, pain attacks are not combined with nausea, vomiting. 5. Early treatment with anti-neuralgia drugs such as “carbamazepine” is effective, but analgesic drugs such as “painkillers” are not effective. 6.The course of the disease is long, with a gradual progressive trend, the effect of drugs is good at the beginning, but the effect becomes worse and worse later, even if the dose of drugs is increased, it is not effective. The differentiation of trigeminal nerve from other diseases 1, trigeminal nerve branchitis is secondary trigeminal neuralgia, this disease occurs in the orbit above the eye, is a continuous pain, a few days after the attack, some patients will appear herpes zoster virus. This disease can improve on its own, and is effective for the application of analgesic drugs, vitamins or local anesthetics, hormones. 2, toothache Look carefully at the teeth for lesions, toothache paroxysmal is not obvious, in the food hot and cold relationship is very big. 3.Glottopharyngeal neuralgia The pain is paroxysmal, most of the attacks occur when swallowing, followed by nodding, talking, laughing can cause attacks, mostly in the root of the tongue and throat or behind the ear, and the pain site is usually in the direction below the line between the root of the ear and the corner of the mouth. 4.Vascular migraine Vascular migraine is a periodic, unilateral headache of varying severity, which is mostly felt as deep brain swelling and pain, and trigeminal neuralgia is mostly felt as superficial pain of the face.