Bell palsy (also known as Bell’s palsy) is an acute, ipsilateral, facial nerve paralysis of unknown etiology that results in weakness of the platysma and muscles of facial expression. Bell palsy affects 11 to 40 persons per 100,000 each year, with peak incidence between the ages of 15 and 50 years and both sexes are affected equally. Pregnant women, persons with diabetes, the elderly, and patie...