蛛网膜下腔出血是以软脑膜血管破裂,血液流入蛛网膜下腔的脑血管病。蛛网膜下腔出血多以突然发病,剧烈的头痛、呕吐、脑膜刺激征、均匀一致的血性脑脊液为其临床特征。约有1/4的病人在病程中出现不同程度的精神障碍,但以精神障碍为首发症状者文献报导尚少,常因起病就表现为类似癔 Subarachnoid hemorrhage is the rupture of blood vessels into the subarachnoid hemorrhage, cerebral vascular disease. Subarachnoid hemorrhage and more sudden onset, severe headache, vomiting, meningeal irritation, uniform bloody cerebrospinal fluid is its clinical features. About 1/4 of the patients in the course of the disease showed varying degrees of mental disorders, but mental disorders as the first symptom reported in the literature is still small, often due to onset showed similar