蛛网膜下腔出血是临床上常见的脑血管病之一。临床表现有典型的头痛、呕吐及脑膜刺激征,脑脊液呈血性。但有少数病例由于出血部位及脑组织损害程度不同,临床表现不典型,易造成误诊。文献上曾有误诊为脑出血、急性胃肠炎,美尼尔氏综合征、癔 Subarachnoid hemorrhage is one of the common clinical cerebrovascular diseases. Clinical manifestations of a typical headache, vomiting and meningeal irritation, cerebrospinal fluid was bloody. However, a small number of cases due to different parts of the bleeding and brain damage, clinical manifestations are not typical, easily lead to misdiagnosis. The literature had misdiagnosed as cerebral hemorrhage, acute gastroenteritis, Meniere’s syndrome, gall