Background: Vestibular neuritis (VN) is commonly diagnosed by demonstration of unilateral vestibular failure, as unilateral loss of caloric response. As this test reflects the function of the superior part of the vestibular nerve only, cases of pure inferior nerve neuritis will be lost.

Peripheral facial palsy is a common disorder with a favourable prognosis. Lyme disease seems to be an infrequent cause of facial palsy in patients without constitutional symptoms or additional neurological findings.