Which disorders should be considered in the differential diagnosis of bilateral simultaneous Bell palsy (idiopathic facial paralysis) (IFP)?

Updated: Jun 14, 2019
  • Author: Danette C Taylor, DO, MS, FACN; Chief Editor: Selim R Benbadis, MD  more...
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Bilateral cases

Bilateral simultaneous Bell palsy is a rare occurrence; the rate of such cases is less than 1% of that of unilateral facial nerve palsy, [30, 31] and it accounts for only 23% of bilateral facial paralysis cases. The majority of patients with bilateral facial palsy have Guillain-Barré syndrome, sarcoidosis, Lyme disease, meningitis (neoplastic or infectious), or bilateral neurofibromas (in patients with neurofibromatosis type 2).

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