男性，25岁。突然剧烈头痛1天，无发热。查体示：脑膜刺激征阳性。该患者最可能的诊断是

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SQL Error: select id,body,options from ***_enewstiku where sourceid='30574' and id < 2467308 and id<>'2467308' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='30574' and id > 2467308 and id<>'2467308' order by id asc limit 5