Bell's palsy pathophysiology

	Bell's palsy Microchapters
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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]

Overview

The facial nerve has an edematous, thickened perineurium with infiltrates of inflammatory cells between nerve bundles and around blood vessels.
It appears that the histology of the facial nerve in Bell's palsy is similar to Herpes Zoster infection, suggestive of an infectious cause.