《湿气密码:水火相交才是湿气的真面目!》 episode artwork

EPISODE · Jun 29, 2025 · 15 MIN

《湿气密码:水火相交才是湿气的真面目!》

from 智慧中医

问曰:五行惟土主湿,李东垣重脾胃,专于燥土去湿。而仲景治太阴,不专用燥药,何也? 答曰:东垣知已成之湿,而不知湿何由生,则以为土不治水也。岂知湿者土之本气,先要解得土字,然后解得湿字,金、木、水、火各居四方,而土属中央,中者四方之所交,央者阴阳之所会,诗夜未央,言天未明,是阴未会于阳之义。鸳鸯鸟不独宿,字从鸯,取阴阳交会之义。盖阴阳二字双声合为一音,即央字也。土居中央者,是阴阳相交而化成。盖水以火交,遇木则腐而成土,遇金则化而归土,故《河图》之数一水、二火、三木、四金,土居五行之末,犹能旺于四季。盖水、火、木、金,交合而成土也,故土于四季皆旺。夫五行名为土,是就其形论六气;名为湿,是就其气论气,之所以湿,亦只是水火木金交姤而成,未有腐质,金含水润,故皆能生土生湿,究竟金木之气交少而水火之气交多。夫火不蒸水则为寒水,非湿也。水不濡火,则为烈火,亦非湿也。譬如甑中有米,无火以蒸之则不湿;无水以濡之亦不湿。必水火相交而后成为湿矣。长夏之时湿气用事,正阴阳交姤之时,水火相蒸之候,故当夏月墙壁皆湿,而人之湿病多感于此。人之脾土本天之湿气,为心火肾水交会而成,能化物运四脏,皆功在湿也。胃以燥纳谷,全借脾之湿以濡之,而始能化,脾生油膜上,腹中之物既化为汁,则引入油膜达于各脏,而充周身长膏油,主润泽,皆其湿之功用也。顾脾气不及则为燥,而太过又反病湿,所以《内经》言脾主湿,又言脾恶湿,故凡湿病皆以治脾为主。水火相蒸为湿,故湿之为病水火兼具,治湿之药其性皆平,正是水火兼能治之也。茯苓、扁豆、苡仁,其味皆淡,是为利湿正药。湿甚则土困,故利湿即能健脾。莲米、芡实,微甘而涩,能收湿气,故健脾。白术有油,以补脾之膏油,而油又不粘米,故能利水,气香温,亦主利水。又能升发,使脾土之气上达,故白术为补脾正药。苍术气温而烈,故带燥性,补胃不补脾,且色苍,得木之性,更能疏泄,为治寒湿之品。夫湿兼水化,水化有余为湿,兼寒病则腹胀溏泻。花椒辛温以散寒湿,能杀湿化之虫。吴萸辛烈去湿尤速。白蔻、干姜等皆治寒湿。吞酸吐酸有二病:一是寒湿,宜吴萸、苍术、桂枝、生姜;一是热湿,宜黄连、黄柏、黄芩、石决明、青皮、胆草等药。微加吴萸、花椒以反佐之。夫酸者,湿所化也,湿挟热而化酸,如夏月肉汤经宿则酸,有冰养之则不酸,麦麸发热则成醋,而酸皆是以热蒸湿而酸也,故黄连等苦燥之品正治其热,化之湿,其一是寒湿。又如菜入坛腌则化为酸,是为寒化之湿,吴萸等辛燥之品正治其寒化之湿,湿注于脚,则为脚气肿病。西医言脚气病,其尿必酸,知是湿也。凡脚气寒涩者多,宜以温药为主,再加木瓜、苡仁、牛膝为引导,所以利脚下之湿也。然而脚气亦有系热湿者,宜防己、黄柏、苍术、木通、胆草等苦降之品治之。湿积于脾,则腹中胀,久则水多为臌,宜逐其水。甘遂、大戟、芫花、牵牛,功力峻猛,随用大枣、参、术、甘草以补脾土,去其太过,又恐损其不足也。脾停饮食则湿不化,宜神曲以散湿,枳壳、陈皮、木香行气以行湿。夫水火交而为湿土,人身之脾应之。白术温而有汁,正是水火相交之物,故正补脾经。黄精甘平有汁液,得水火气交之平,故正补脾经。山药有质色白,故补脾之火以补湿。苍术有汁而味烈,则扶脾之火以燥湿。赤石脂土之质也,能燥湿。橘、朴、槟榔之去湿,以木疏土也。桑皮、蒺藜之利湿,以金行水也,湿溢于腠理则肿。桑皮象人之膜,故治之。防己中空纹如车轮,能外行腠理,内行三焦,能通水气。木通中空,与防己同,味苦泄,故均为行湿之要药。腰脚之湿,土茯苓、萆薢 、威灵仙、苡仁,凡利降者,皆治之,再宜随寒热加减。湿蒸皮肤为发黄,宜茵陈、秦皮、益母草,以散兼利者治之。膀胱不利,宜泽泻、车前、昆布、海藻,诸物多生水石间,故化膀胱之水,此清火利水,为治湿之法。湿与热蒸,则为暑,各书论暑,不知暑之原而分阴暑、阳暑,与中热、中寒热无异,非暑之实义也。陈修园以暑为热,而不知热合湿乃为暑。《月令》云,土润溽暑,惟其润溽,然后成暑,故治暑者必兼湿热二字,乃为得宜。夏秋瘟疫、痢疟皆感于暑,即湿热也,此断不可用燥药,燥则壅湿而不流,又不可用表药,用表则发热而湿蒸,唯一味清利,六一散虽轻,为清热利湿之正药。黄连苦能泻热,又能燥湿,亦为去暑之正药。伤暑发热,宜香茹以散皮肤之湿热。暑变瘟疫,石膏、黄连为主,已有专书,未能枚举,总之不可发表,但宜泻热利湿。伤暑变痢,不可发汗,更不可利水,但宜清热,而湿自化,黄连、黄芩为主。伤暑变疟,贵于散湿清热,三焦膀胱之小便清则疟自除。土茯苓、猪苓、葛根、独活散湿,以治太阳膀胱。黄芩、鳖甲、青皮、胆草清热以利少阳三焦,两腑兼治为宜。痰疟是湿积而成,常山苗能透达以吐之。疟母是痰与血合,鳖甲、牡蛎、山甲能破之,此湿之兼证也,未能尽详。又如五加皮引治皮肤,五苓散用桂枝以治寒湿,五淋汤用山栀以治热湿,要之。湿为脾所司,脾之膏油连焦膜而彻内外,以达膀胱,所以治湿兼治各处。究湿之气,则水火合化者也,故有寒热二证。

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《湿气密码:水火相交才是湿气的真面目!》

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问曰:五行惟土主湿,李东垣重脾胃,专于燥土去湿。而仲景治太阴,不专用燥药,何也? ...

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