Purpose: To update the epidemiological patterns of facial nerve palsy (FNP) in Olmsted County, MN.

Methods: A retrospective chart review using the Rochester Epidemiology Project database was conducted. Patients aged ≥18 years receiving a diagnosis of FNP within the Rochester Epidemiology Project database from the years 2000 to 2010 were included in the study. Data collected included age, gender, cause of FNP, degree of paralysis, medical and/or surgical management, and outcomes. Overall incidence rates were determined using gender-specific population figures for Olmsted County. Incidence trends were compared with previous Rochester Epidemiology Project studies.

Results: The most common cause for FNP was Bell palsy (70.3% of cases). The overall incidence rate for Bell palsy in Olmsted County from 2000 to 2010 was 39.9 (95% CI, 36.1-43.7) per 100,000 person-years. This is an absolute increase of 14.9 per 100,000 person-years and a 60% relative increase in Bell palsy compared with a previous study performed at Mayo Clinic using the Rochester Epidemiology Project database population data from 1968 to 1982. Patients were infrequently evaluated by an ophthalmologist (8.4% of cases), and surgical intervention to address ophthalmic sequelae was rare (1.7% of cases).

Conclusions: The incidence of Bell palsy has increased dramatically over previous studies, which has occurred in the setting of declining herpes simplex virus type 1 seropositivity trends and increasing herpes zoster incidence in the United States. Few patients with FNP are referred to ophthalmologists, which may represent a gap in care for both acute and long-term ophthalmic sequelae.

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http://dx.doi.org/10.1097/IOP.0000000000002912DOI Listing

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