Facial neuritis is mainly caused by idiopathic facial nerve paralysis, which primarily manifests as paralysis of the facial muscles. Symptoms include deviation of the mouth, eyelid closure, lack of strength in opening the eyes, and shallowing of the nasolabial fold. Some patients' conditions are related to viral infections, which may cause facial pain. However, the pain is generally not very severe, and anti-viral medications can be used for treatment, which are somewhat effective. Additionally, active treatment of facial neuritis mainly involves the use of corticosteroids and is supported by the administration of B-group vitamins. Most patients, with timely and active treatment, have a relatively very good prognosis, with many experiencing no residual effects. (Please take medications under the guidance of a professional physician, do not self-medicate.)