Bilateral Idiopathic Sequential Neuritis: Case Report and Literature Review.

Bilateral sequential vestibular neuritis is a rare condition reported in literature involving the vestibular nerve sequentially. Nowadays, the video head impulse test (vHIT) and vestibular-evoked myogenic potentials provide specific patterns of reduced vestibulo-ocular reflex (VOR) that allow differentiation between complete and partial nerve involvement. These tests are essential in cases of bilateral vestibular loss to monitor vestibular compensation. The case of a 56-year-old man who presented to a tertiary vestibular center with acute left-sided vestibular loss, following a documented contralateral acute vestibular loss 4 years earlier. To the best of current knowledge, this report presents, for the first time in the literature, vHIT in Suppression Head Impulse Paradigm modality data as an expression of compensation. A review of the literature was also performed according to PRISMA statements.