Atherosclerotic cerebral infarction refers to atherosclerosis and thrombosis in the arterial system of the brain (mainly internal carotid artery-middle cerebral artery system or vertebral-basilar artery system), which narrows and blocks the arterial lumen and leads to local brain tissue necrosis in the arterial blood supply area. Clinical manifestations are hemiplegia, hemiplegia, slurred speech and other sudden symptoms of local neurological deficit, formerly known as cerebral thrombosis. This disease is the most common cerebrovascular disease, accounting for 70% of cerebrovascular diseases. The incidence rate of elderly people over 55 years old is high, which is higher in men than in women.

Sudden deafness, or idiopathic sudden deafness, referred to as sudden deafness or sudden deafness, refers to sudden sensorineural deafness with unknown reasons. The main clinical manifestation is unilateral hearing loss, which may be accompanied by tinnitus, earplugs, dizziness, nausea and vomiting.