The symptoms of numbness in the face are caused by the following main causes: 1. Facial nerve palsy. The symptoms of facial numbness may be a precursor symptom of facial nerve palsy, also known as facial neuritis, is a group of diseases in which facial expression muscles are paralyzed, related to cold or infection. The main clinical symptoms are crooked mouth and eyes, tongue extension to one side, etc. The main treatment measures are nerve cell nutrition, such as methylcobalamin tablets, etc. 2, cerebral infarction. The clinical symptoms caused by the infarction are different due to different areas and parts of the infarction. If symptoms such as facial numbness, drooling, dizziness and limb numbness occur, it is better to check the head CT at the hospital to see if it is caused by cerebral infarction. Regardless of which disease is causing it, it is best to treat it as early as possible to avoid leaving facial numbness and other sequelae .