Trigeminal neuralgia occurs when half of the face hurts and is accompanied by a headache. Trigeminal neuralgia is the most common neuralgia of the head and face, and is divided into two categories: 1) primary trigeminal neuralgia is caused by vascular collaterals pressing on the trigeminal nerve; 2) secondary trigeminal neuralgia is caused by various other diseases, such as inflammation, tumors, vascular disease, etc. Trigeminal neuralgia is intense in nature, but it is limited to the area where the trigeminal nerve is located, and its nature is electric shock-like pain, burning pain or stabbing pain, or sometimes tearing or cutting pain. It can be triggered by swallowing, chewing, washing the face, etc. There may be trigger points around the nasal area and mouth and lips, which can trigger the pain when touched. Pain relief treatment is provided with drugs such as carbamazepine, pregabalin, and gabapentin.