Facial paralysis, or Bell's palsy, has an incidence rate of 20-30 per 100,000 people per year. Most cases are peripheral nerve palsies, affecting males and females equally and more commonly affecting the left side of the face. The average age is 40 years old. 90% of patients recover from facial paralysis. Diagnostic tests like an electromyography can help determine if the facial paralysis is central or peripheral in nature and guide appropriate treatment.