What is Bell's Palsy?
Bell's palsy is a form of facial paralysis resulting from damage to the 7th (facial) cranial nerve. This nerve disorder afflicts approximately 40,000 Americans each year. It can strike almost anyone at any age; however, it disproportionately attacks pregnant women and people who have diabetes, influenza, a cold, or some other upper respiratory ailment. In addition to one-sided facial paralysis with possible inability to close the eye, symptoms of Bell's palsy may include pain, tearing, drooling, hypersensitivity to sound in the affected ear, and impairment of taste. Researchers in Japan identified the common cold sore virus, herpes simplex, as the likely cause of most cases of Bell's palsy.

Is there any treatment?
There is no specific treatment for Bell's palsy. Treatment is usually aimed at protecting the eye from drying at nighttime. Some physicians may prescribe a corticosteroid drug to help reduce inflammation and an analgesic to relieve pain.

What is the prognosis?
The prognosis for Bell's palsy is generally very good. With or without treatment, most patients begin to get significantly better within 2 weeks, and about 80 percent recover completely within 3 months. For some, however, the symptoms may last longer. In a few cases, the symptoms may never completely disappear.

From NINDS/NIH