Facial palsy, also known as facial nerve palsy, can be divided into central facial palsy and peripheral facial palsy. Central facial palsy is mainly seen in acute cerebrovascular disease, including cerebral hemorrhage and cerebral infarction, and can be accompanied by slurred speech, difficulty in swallowing, weakness of limbs, sensory impairment, choking and coughing, as well as unconsciousness and incontinence. Most patients with facial neuritis have an unknown cause, while a small percentage of patients have a viral infection, and in addition to a lopsided face, they may also have drooling and some patients have auditory hypersensitivity. Once the symptoms of facial lopsidedness appear, you should go to the hospital in time for early diagnosis and treatment to avoid sequelae as much as possible.