典型的蛛网膜下腔出血(简称SAH)具有头痛呕吐、脑膜刺激征、血性脑脊液三联征。不典型者易造成诊断失误。我们遇到3例以眩晕为突出表现,缺乏头痛的SAH,报告如下。病例摘要例1:某女,52岁。1978年2月28日与人吵架后觉头晕,视物转动,周身乏力,行走不稳,恶心。1小时后入院。有高血压史8年,既往无类似发作史。查体:血压170/110,神志清楚,烦躁不安,颈 A typical subarachnoid hemorrhage (SAH) with headache and vomiting, meningeal irritation, bloody cerebrospinal fluid triad. Atypical people easily lead to diagnostic errors. We encountered 3 cases of dizziness as the outstanding performance, lack of headache in SAH, the report is as follows. Case Summary Example 1: a woman, 52 years old. February 28, 1978 after quarrel with people feel dizzy, depending on the material rotation, the whole body fatigue, walking unstable, nausea. 1 hour after admission. Have a history of hypertension for 8 years, no previous history of similar attacks. Physical examination: blood pressure 170/110, conscious, irritability, neck