Bell's palsy pathophysiology

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

Pathophysiology

Microscopic Pathology

• 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.