Bell's palsy epidemiology and demographics
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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]
Overview
Bell’s palsy affects about 40,000 people in the United States every year. It affects approximately 1 person in 65 during a lifetime. Until recently, its cause was unknown in most cases, but it has now been related to both Lyme disease and Herpes Zoster.
Epidemiology and Demographics
Incidence
The annual incidence rate of Bell's Palsy is between 13 and 34 cases per 100,000 population.
Race and Gender
There is no race, geographic, or gender predilection.
Other Associations
The risk is three times greater during pregnancy, especially in the third trimester or in the first postpartum week. Its is to note that diabetes is present in about 5 to 10 percent of patients.