Peripheral facial palsy and herpes zoster infection.

A clinical and virological study of 133 consecutive cases of peripheral facial palsy has provided evidence for simultaneous infection with the varicella-zoster virus in 9 patients (6-8 per cent). Seven of these presented differing but typical manifestations of the Ramsay Hunt syndrome, and the diagnosis was therefore strongly suspected on the basis of the clinical findings alone. The remaining two patients had neither herpetiform rash nor involvement of the eighth cranial nerve, and had been diagnosed in the clinic as typical cases of Bell's palsy. In this series the incidence of zoster infection in apparent idiopathic facial palsy was 1-8 per cent.