是直立性头痛。直位或坐位15min内出现,平卧15~30min可缓解。双侧、弥漫性;枕部、枕部下方最常见,额部、颞部也多见,牵拉感明显。头痛程度差别较大。其它头痛形式:劳累性头痛、间隙性头痛、平卧位加重的间隙性头痛。恶心呕吐、耳鸣耳闷、听力减退、视物模糊、复视等;严重时出现脑疝昏迷。W.I.Schievink,JAMA295(2006)2286-2296.A.N.LeepHunderfund,etal.JNeurol259(2012)306-310.江云,王谨,龚向阳,等。42例自发性脊髓脑脊液漏所致颅内低压的临床特点分析。浙江大学学报,2014自发性颅内低压的MRI有5个典型特征(SEEPS):硬膜下积液或血肿(Subduralfluidcollections);硬脑膜增强(Enhancementofthepachymeninges);静脉结构充盈(ementofvenousstructures);垂体充血增大(Pituitaryhyperemia);脑组织下沉(Saggingofthebrain)自发性颅内低压—头颅影像表现自发性颅内低压—头颅影像表现硬膜下积液硬膜下积液和硬膜下血肿,在SIH患者中发病率很高,文献报告出现率分别为50%和20%。自发性颅内低压—头颅影像表现硬膜下血肿自发性颅内低压—头颅影像表现WangJin,ZhangDan,GongXiangyangandDingMeipingRapidresolutionofsubduralhematomaaftertargetedepiduralbloodpatchtreatmentinpatientswithspontaneousintracranialhypotension.ChineseMedicalJournal2014;127(11)图F为EBP术后4天复查颅脑CT,显示硬膜下积液完全吸收
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