Sudden hearing loss as initial presentation of multiple sclerosis

Abstract

Sudden hearing loss, as a symptom of multiple sclerosis (MS), has been rarely reported in the literature and most patients experience this condition during MS exacerbation. The cause and treatment of this phenomenon are also controversial. In this paper, two patients with unilateral sudden sensorineural hearing loss, who were subsequently diagnosed of having MS, are presented. Later, following a literature review, a better definition for this rare symptom of MS is presented.