患者男,22岁,因“眩晕、行走不稳2d”收入院。患者诉入院8d前洗澡时受凉感冒,2d前出现眩晕,伴恶心、呕吐,不伴有耳鸣、耳胀满感、听力下降等耳部症状,无头痛、吞咽障碍、言语困难、肢体活动障碍、意识障碍等。眩晕症状持续存在且进行性加重,且行走不稳。门诊查体:右侧Dix-Hallpike试验可见垂直性眼震,头颅CT未见明显异常,门诊遂以“后循环梗死?”收入院。既往史无特殊记录,内科查体未 Male patient, 22 years old, due to “dizziness, walking unstable 2d ” income hospital. Patients complained of cold and cold before taking a bath 8d before admission, dizziness, nausea and vomiting before 2d, no ear symptoms such as tinnitus, ear swelling and hearing loss, no headache, dysphagia, speech difficulties, limb movement disorders, Disorder and so on. Vertigo symptoms persist and progressive increase, and walking unsteady. Outpatient examination: the right side of the Dix-Hallpike test showed vertical nystagmus, craniocerebral CT no obvious abnormalities, outpatient then to “post-infarction?” Income hospital. No previous history of special records, internal medical examination did not