蛛网膜下腔出血(SAH)患者具有典型“三联症”(剧烈头痛、脑膜刺激征、血性脑积液)时诊断不难。但对症状轻,却不典型的SAH,由于其临床复杂,常延误诊治,特别是CT检查,也未能给出明确提示者,更容易延误诊治。本文总结了1995-2007 Patients with subarachnoid hemorrhage (SAH) are typically diagnosed when diagnosed with “triple disease” (severe headache, meningeal irritation, bloody hemorrhage). However, the symptoms of mild, but atypical SAH, due to its clinical complex, often delayed diagnosis and treatment, especially CT examination, but also failed to give a clear prompt, more likely to delay diagnosis and treatment. This article summarizes the 1995-2007