Epidemiological trends of Bell's palsy treated with steroids in Korea between 2008 and 2018.

The incidence and recurrence rates presented in this study are comparable with those reported in earlier studies that included patients with Bell's palsy, regardless of the use of steroids, and documented an increase in the burden of Bell's palsy. Further randomized controlled trials are required to ascertain the long-term effects of physiotherapy on recurrent Bell's palsy.