Posterior circulation infarction with sudden deafness as a clinical manifestation.

Hearing loss caused by stroke must be taken seriously, as it is a treatable condition that highly depends on timely intervention. This case report presents a rare case of a 75-year-old female with a history of hypertension who visited the Emergency Department of Otolaryngology due to sudden left-sided deafness accompanied by vertigo and vomiting, and magnetic resonance imaging (MRI) demonstrated acute posterior circulation cerebral infarction.In the Emergency Department setting, for middle-aged and elderly patients with vascular risk factors, hearing loss may serve as an early warning sign of vertebrobasilar artery ischemic stroke. Immediate stroke screening should always be prioritized, as acute antithrombotic and acute revascularization treatments may be necessary.