[Sudden sensorineural hearing loss as the first symptom of multiple sclerosis. Review of literature and case report].

Sudden sensorineural hearing loss is rarely the first manifestation of multiple sclerosis (MS). In the presented case of a 31-year-old woman, sudden hearing loss in the left ear was the first monosymptomatic manifestation of the disease. Based on clinical evaluation and MRI, we diagnosed the relapsing-remitting variant of MS. The several-month long observation of the patient included noting the fluctuations in the patient's hearing capability in correlation with the continuously abnormal auditory brainstem responses.