A case of sudden unilateral hearing loss due to the vertebral artery dissection

Abstract

A 50-year-old woman developed sudden right hearing loss, vertigo with the right cervical pain for 6 days. Neurological examinations revealed rotatory nystagmus to the left direction and right hearing loss. Diffusion-weighted image (DWI) on MRI showed the cerebellar infarction in the right anterior inferior cerebellar artery (AICA) and posterior inferior cerebellar artery (PICA) supply. On day 22, cerebral angiography showed that the right AICA and PICA diverged from the right vertebral artery (VA). We diagnosed that the cause of the right hearing loss was the AICA occlusion caused by the right VA dissection. Now, her right hearing loss was not recovered.