Toothache, headache, half of the face pain should be considered whether the pain is caused by teeth first, and the second is trigeminal neuralgia. If you have toothache often, it is better to go to dentistry to check whether it is tooth decay, wisdom tooth or gum inflammation, etc. If it is tooth problem, you need to carry out anti-inflammatory treatment or treat tooth decay and remove wisdom tooth for toothache to be completely eliminated. You must do a good job of oral hygiene, brush your teeth in the morning and evening, and rinse your mouth after meals. Trigeminal neuralgia is a kind of pain confined to the distribution area of the trigeminal nerve, which is more common around the corner of the eye, the upper part of the cheek and the lower jaw. The pain is short-lived, lasting only a few seconds or up to 2 minutes, with sudden onset and offset and no pain in the interval. The nature of the attack is pins and needles, electric shock, burning, cutting, or tearing pain, which can be triggered by actions such as washing the face, brushing the teeth, or eating. Trigger points can exist on the patient’s face, such as the nose, corners of the mouth, cheeks, or tongue, and gentle touching of the area can induce this pain. The diagnosis can be further clarified by completing a cranial MRI or an MRI of the relationship between the trigeminal nerve and the surrounding blood vessels. Treatment involves the use of pain medications specifically for trigeminal neuralgia, such as carbamazepine, gabapentin, pregabalin, and phenytoin sodium.