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Cerebrospinal fluid in acute peripheral facial palsy.


Cerebrospinal fluid (CSF) is rarely analyzed in peripheral facial palsy, and reports in the literature are scarce. We report the CSF findings in 265 patients with acute isolated peripheral facial palsy. The CSF findings were abnormal in 11% of 230 patients with idiopathic peripheral facial palsy, in 60% of 17 patients with Ramsay Hunt syndrome (pleocytosis), in 25% of 8 patients with
Lyme disease, in all of 8 patients with HIV infection, and in 2 other patients (sarcoidosis and herpes simplex). We conclude from this large series that the CSF is usually normal in idiopathic peripheral facial palsy. If the CSF is abnormal, a specific cause should be sought.

J Neurol. 1999 Mar;246(3):165-9. [1]