在动脉瘤性蛛网膜下腔出血(SAH)前,一些病人经常出现突发性剧烈头痛,有些尚伴有神经功能缺损。假设这种头痛的原因是轻微SAH,那么这种情况被Gillingham命名为“前兆渗漏(warning leak)”。这种前兆渗漏与主要SAH之间的临床特点并没有明显的区别,而前兆渗漏常被一般的医生误诊为偏头痛、鼻旁窦 Prior to aneurysmal subarachnoid hemorrhage (SAH), some patients often had sudden and severe headache, while others were still associated with neurological deficits. Assuming this headache is due to a slight SAH, this is what Gillingham calls the “warning leak.” There is no significant difference between this precursor leak and the clinical features of the primary SAH, and precursor leaks are often misdiagnosed as migraine by the general practitioner,