安×,女,60岁.因眩晕2小时于1990年10月7日10点急诊入院.2小时前与人闲谈时突然出现旋转性头晕,呈持续性,头颈部活动时加重.被迫卧床休息,闭目拒动.病前无发热,病后无头痛、呕吐及意识障碍;无肢体麻木无力及失语;无耳鸣、耳聋及视力、视野改变.既往无眩晕史.发现高血压6年,未行正规治疗.入院检查:T36.5℃,P72次/分,Bp23.94/15.96Kpa.发育正常,营养一般.急病容,表情痛苦,闭目拒动, An ×, female, aged 60. Due to dizziness 2 hours at 10 o’clock on October 7, 1990 emergency hospitalization .2 hours ago when talking to a sudden rotation dizziness, was persistent, head and neck activities increased. Bed rest, eyes closed refuse to move .No fever, no headache, vomiting and unconsciousness after illness; no limb numbness and aphasia; no tinnitus, deafness and visual acuity, visual field change .No previous history of vertigo .Hypertension 6 years , Not formal treatment. Admission examination: T36.5 ℃, P72 / min, Bp23.94 / 15.96Kpa. Normal development, general nutrition. Sudden illness, facial expression pain, eyes closed refuse to move,