病患烦热汗出则解又如疟状日晡时发热者属阳明也脉实者宜下之脉浮虚者宜发汗下之与大承气汤发汗宜桂枝汤(方
在太阳五)
太阳表证未解而生烦热汗出则烦热解矣乃汗后又如疟状每日日晡时发热者此属阳明也(日晡申戍之交阳明旺盛之时
也汉书天文志正月旦决八风旦至食为麦食至 为稷 至晡为黍晡至下晡为菽下晡至日入为麻各以其时用云色占种所宜按
日晡在日 之后下晡在日入之前正申酉戍燥金得令之时也)阳明有经证有腑证经证表热外发其脉浮虚腑证里热内结其脉
实脉实者宜下之以泄其里热脉浮虚者宜发汗以泄其表热下之与大承气汤大黄芒硝破结而泄热浓朴枳实降浊而消满也发汗
宜桂枝汤姜甘大枣补脾精而和中气桂枝芍药通经络而泄营郁也
阳明自太阳传来水入于腑全是经病经病宜汗其未离太阳之经则用麻桂其将入阳明之腑则加葛根阳明一见吐利虽未是
里实可下之证然而经迫腑郁已是胃热将成之根故用葛根双解经腑之郁此证得法自无离经入腑之患矣
阳明病脉迟汗出多微恶寒者表未解也可发汗宜桂枝汤(方在太阳五)
脉迟汗出恶寒是太阳中风脉证故宜桂枝而多汗已属胃阳之盛故曰阳明病也
阳明病脉浮无汗而喘者发汗则愈宜麻黄汤(方在太阳二十)
脉浮无汗而喘是太阳伤寒脉证故宜麻黄 太阳经病内传阳明之腑阳明之腑邪未实太阳之经邪未罢是宜用太阳表药即
里有下证而表病未解亦不可下当先以麻桂表其风寒然后议下也 风脉浮缓寒脉浮紧迟者缓之变文也风脉不言浮寒脉不言
紧省文也太阳传阳明缓紧之中必兼大象以伤寒三日阳明脉大前章已经提明故此不及
患者出现烦热,出汗后症状缓解;或者像疟疾一样,在下午申时到戌时之间发热,这属于阳明病。脉象实大的,适宜用攻下法;脉象浮而虚的,适宜用发汗法。攻下法使用大承气汤(方剂见太阳篇第五节);发汗法使用桂枝汤(方剂见太阳篇第五节)。
如果太阳表的证候尚未解除,产生烦热并出汗,那么烦热就会解除。但出汗后再次出现像疟疾一样的症状,每天在日晡时(即申时、酉时、戌时交接之时,是阳明经气旺盛的时候。《汉书·天文志》记载:正月初一观测八风,从早晨到吃饭时为麦,吃饭时到傍晚为稷,傍晚到日晡为黍,日晡到下晡为菽,下晡到日落为麻,分别根据这些时辰的气候颜色来占卜种植是否适宜。按此说法,日晡在日落后、下晡在日落前,正是申、酉、戌这三个属燥金的时辰当令之时)发热,这就属于阳明病了。
阳明病有经证和腑证之分。经证表现为表热向外发散,其脉象浮虚;腑证表现为里热向内结聚,其脉象实大。脉象实大的,适宜用攻下法以泄除体内的里热;脉象浮虚的,适宜用发汗法以泄除体表的表热。攻下法给予大承气汤,其中大黄、芒硝破除结滞并泄热,厚朴、枳实降浊气并消除胀满。发汗法适宜用桂枝汤,其中生姜、甘草、大枣补益脾胃精气并调和中焦气机,桂枝、芍药疏通经络并宣泄营分的郁滞。
阳明病由太阳病传变而来,水湿进入腑中,完全是经病。经病适宜用发汗法。如果病邪尚未离开太阳经,则使用麻黄汤或桂枝汤;如果病邪即将进入阳明腑,则加入葛根。阳明病一旦出现呕吐和下利,虽然还不是里实可下的证候,然而经气逼迫、腑气郁结,已经是胃热将要形成的根源,所以使用葛根来双解经气和腑气的郁结。这个证候如果治疗方法得当,自然就不会有脱离经证而入腑的祸患了。
阳明病,脉象迟缓,出汗多,微微怕冷的,说明表证尚未解除,可以发汗,适宜用桂枝汤(方剂见太阳篇第五节)。
脉迟、出汗、怕冷,这是太阳中风病的脉证,所以适宜用桂枝汤。但因为出汗多,已经属于胃阳亢盛的表现,所以称为阳明病。
阳明病,脉象浮,无汗且气喘的,发汗后就会痊愈,适宜用麻黄汤(方剂见太阳篇第二十节)。
脉浮、无汗且气喘,这是太阳伤寒病的脉证,所以适宜用麻黄汤。太阳经的病邪内传至阳明之腑,如果阳明腑中的邪气尚未结实,而太阳经的邪气尚未罢休,这时适宜使用太阳经的解表药物。即使体内已有需要攻下的证候,但如果表证未解,也不可攻下,应当先用麻黄汤或桂枝汤解除表部的风寒,然后再讨论攻下之法。风邪的脉象浮而缓,寒邪的脉象浮而紧,“迟”字在这里是“缓”字的变文表达。风邪脉象不说“浮”,寒邪脉象不说“紧”,这是省略写法。太阳病传变至阳明病,在缓与紧之中必然兼有大的脉象,因为在前一章已经明确提到“伤寒三日,阳明脉大”,所以此处不再赘述。
If a patient experiences vexation and heat, which resolve after sweating; or presents with symptoms resembling malaria, specifically fever occurring in the late afternoon (Shen, You, Xu hours), this belongs to Yangming disease. If the pulse is solid (Shi), purgation is indicated; if the pulse is floating and deficient (Fu Xu), diaphoresis is indicated. For purgation, Da Cheng Qi Tang (Major Order the Qi Decoction) is used (see Taiyang Chapter 5); for diaphoresis, Gui Zhi Tang (Cinnamon Twig Decoction) is used (see Taiyang Chapter 5).
If the exterior syndrome of Taiyang has not yet resolved, leading to vexation and heat that resolve upon sweating, but subsequently symptoms resembling malaria recur with daily fever at Ribu time (the period between Shen, You, and Xu hours, when Yangming energy is prosperous. According to *Book of Han: Treatise on Astronomy*, observing winds on the first day of the first month helps predict crop suitability: from dawn to mealtime for wheat, mealtime to dusk for millet, dusk to Ribu for sorghum, Ribu to Xiaibu for beans, Xiaibu to sunset for hemp. Ribu occurs after sunset, while Xiaibu is before sunset, corresponding to the time when Dry Metal governs, i.e., Shen, You, Xu hours), this indicates involvement of Yangming.
Yangming disease manifests as either Jing (Channel) syndrome or Fu (Organ) syndrome. Jing syndrome involves exterior heat radiating outward, characterized by a floating and deficient pulse. Fu syndrome involves interior heat knotting inward, characterized by a solid pulse. A solid pulse indicates the need for purgation to drain interior heat; a floating and deficient pulse indicates the need for diaphoresis to release exterior heat. Purgation employs Da Cheng Qi Tang (Major Order the Qi Decoction): Da Huang (Rhei Radix et Rhizoma) and Mang Xiao (Natrii Sulfas) break up stagnation and drain heat; Hou Po (Magnoliae Officinalis Cortex) and Zhi Shi (Aurantii Fructus Immaturus) direct turbidity downward and eliminate fullness. Diaphoresis employs Gui Zhi Tang (Cinnamon Twig Decoction): Sheng Jiang (Zingiberis Rhizoma Recens), Gan Cao (Glycyrrhizae Radix et Rhizoma), and Da Zao (Jujubae Fructus) tonify spleen and stomach essence and harmonize middle qi; Gui Zhi (Cinnamomi Ramulus) and Bai Shao (Paeoniae Radix Alba) unblock collaterals and vent Ying (Nutritive) depression.
When Yangming disease transmits from Taiyang, water-dampness enters the fu organs, remaining entirely as a Jing (Channel) syndrome. Jing syndromes are treated with diaphoresis. If the pathogen has not left the Taiyang channel, Ma Huang Tang (Ephedra Decoction) or Gui Zhi Tang (Cinnamon Twig Decoction) are used. If the pathogen is about to enter the Yangming fu organ, Ge Gen (Puerariae Lobatae Radix) is added. Although vomiting and diarrhea in Yangming disease do not yet constitute a solid interior syndrome requiring purgation, the pressure on the channels and depression in the fu organs indicate that stomach heat is forming. Therefore, Ge Gen (Puerariae Lobatae Radix) is used to simultaneously resolve channel and fu depression. With proper treatment, there will be no risk of the disease leaving the channel and entering the fu organ.
In Yangming disease, if the pulse is slow (Chi), sweating is profuse, and there is slight aversion to cold, the exterior syndrome has not yet resolved. Diaphoresis may be applied using Gui Zhi Tang (Cinnamon Twig Decoction) (see Taiyang Chapter 5).
Slow pulse, sweating, and aversion to cold are signs of Taiyang Wind Strike syndrome, thus Gui Zhi Tang (Cinnamon Twig Decoction) is appropriate. However, excessive sweating indicates flourishing Stomach Yang, hence it is termed Yangming disease.
In Yangming disease, if the pulse is floating, there is no sweating, and wheezing occurs, diaphoresis leads to recovery. Ma Huang Tang (Ephedra Decoction) is indicated (see Taiyang Chapter 20).
Floating pulse, no sweating, and wheezing are signs of Taiyang Cold Damage syndrome, thus Ma Huang Tang (Ephedra Decoction) is appropriate. When Taiyang channel pathogens transmit internally to the Yangming fu organs, if the Yangming fu pathogens are not yet solidified and the Taiyang channel pathogens have not yet subsided, Taiyang exterior-releasing herbs should be used. Even if there are interior indications for purgation, if the exterior syndrome is unresolved, purgation must not be performed. One must first use Ma Huang Tang (Ephedra Decoction) or Gui Zhi Tang (Cinnamon Twig Decoction) to release wind-cold from the exterior, and then consider purgation. Wind pulses are floating and slow (Huan); cold pulses are floating and tight. The term "slow" (Chi) here is a variant expression for "slow/relaxed" (Huan). Omitting "floating" for wind and "tight" for cold is a stylistic ellipsis. When Taiyang transmits to Yangming, the pulse must exhibit a large (Da) quality amidst the slow and tight characteristics, as previously stated in the chapter: "After three days of cold damage, the Yangming pulse is large." Thus, it is not reiterated here.