If the patient has pain in the right side of the face, it may be the following conditions: 1. trigeminal neuralgia: ask the patient whether the whole right side of the face is painful, or the upper right side of the face, or the lower right side of the face is painful, what is the nature of the pain, whether it is a tug, whether the pain is aggravated when eating or washing the face, if there is such a situation, consider the existence of trigeminal neuralgia. 2. viral infection: observe whether there is swelling of the right side of the face, skin fever, and also touch If there is a swelling of the right side of the face, the skin should be warm, and the parotid gland should be touched. 3. Herpes zoster: the pain of the right side of the face should be observed to see if the patient has herpes, and some herpes zoster can cause pain on the right side of the face.