There are several causes of facial local numbness, first, it is caused by facial neuritis, facial neuritis, also known as facial palsy, is a symptom caused by a variety of causes of facial nerve damage, common causes are due to viral infection or cold, as well as facial nerve damage can lead to facial neuritis occurs, the patient will appear facial numbness, expression painful symptoms, sometimes the mouth and eyes will appear crooked and other symptoms. It can be improved by reasonable treatment, such as anti-viral treatment, can also be treated by taking vitamin B and other nerve-nourishing drugs, and can also be treated by acupuncture, which can play a very good role. The second, facial local numbness may also be caused by cerebrovascular accidents, once the cerebral infarction or cerebral hemorrhage, etc., will damage the central nervous system, facial neuritis belongs to a branch of the central nervous system, so there will be facial local numbness this abnormal performance of sensation. The third, facial local numbness may also be caused by drug poisoning, can be caused by local drug poisoning, but also systemic drug poisoning caused by central nervous damage, can cause facial nerve numbness symptoms.