Clinical manifestations and treatment of Bell’s facial nerve palsy Bell’s palsy: refers to simple peripheral facial nerve palsy with no other signs or symptoms, the cause of which is not clinically certain. Many patients report no abnormalities at bedtime, but suddenly feel unable to drink or rinse when they wake up in the morning; or they do not feel anything but others notice it first. This kind of sudden unilateral facial palsy without other symptoms or signs is often a special manifestation of Bell’s facial palsy. ②The typical symptoms of facial palsy are: drooping of the corners of the mouth on the affected side and upward skewing of the healthy side. The upper and lower lips cannot close tightly due to paralysis of the orbicularis oris muscle, so dysfunction occurs such as water leakage, inability to puff the cheeks and blow. The upper and lower eyelids cannot be closed and show the Bell’s sign; because the eyes cannot be closed, they are prone to conjunctivitis; there is often tear accumulation or overflow in the lower conjunctival sac, which is usually caused by paralysis of the lacrimal sac muscle and conjunctivitis. The loss of forehead wrinkles and the inability to frown are the main basis for differentiating Bell facial palsy or peripheral facial palsy from central facial palsy. ③In addition, the symptoms of facial palsy also depend on the site of injury. Above the stem mammary foramen, changes in taste, tears, saliva and hearing may also occur; therefore, the site of facial nerve damage can be clarified by taste, hearing and tear examination. Treatment is divided into acute phase, recovery phase, and sequelae phase: (1) Acute phase: 1~2 weeks after the onset of disease to control tissue edema, improve local blood circulation to reduce nerve compression, dexamethasone 10mg IV for 7~10 days or oral prednisone 30mg/d dose or divided into 2 doses for 5 consecutive days to gradually reduce the dose and stop for a total of 10~14 days, combined with antiviral drugs acyclovir or virazole orally or IV, vitamin B1 100mg, B1 2500 micrograms intramuscular injection, physiotherapy infrared irradiation stem mammary foramen, local hot compresses muscle massage, should not be strong needle stimulation, electroacupuncture treatment; (2) recovery period: the end of the second week to 1~2 years, continue the medication, can be strong needle stimulation, electroacupuncture multiple points, pay attention to eye protection. Active muscle function exercise; (3) sequelae period: permanent facial palsy for those who still cannot recover after 2 years.