Facial neuritis is very common in neurology, mainly caused by nonspecific inflammatory responses. For example, some patients with facial neuritis may experience viral infections, leading to inflammatory reactions in the muscles. Some patients develop inflammation of the facial nerve due to exposure to cold winds. Others may have immune dysfunction or rheumatic autoimmune diseases, which lead to inflammation of the facial nerve. Patients with facial neuritis usually experience paralysis of the facial muscles and may also experience significant pain, especially in the mastoid and external auditory canal. It is essential to treat facial neuritis early, using corticosteroids and B vitamins, as many patients have a good prognosis after treatment.