茵陈蒿（六两） 栀子（十四枚擘） 大黄（三两）
上三味。以水一斗。先煮茵陈。减六升。纳二味。煮取三升。去滓。分温三服。小盒饭
利。尿如皂角汁状。色正赤。一宿腹减。黄从小便去也。
伤寒七八日。身黄如橘子色。小便不利。腹微满者。茵陈蒿汤主之。阳明病发热汗出者
。此
为热越。不能发黄也。但头汗出。身无汗。剂颈而还。小便不利。渴饮水浆者。此为瘀热在
里。身必发黄。茵陈蒿汤主之。按发黄证若小便自利而发黄者。属蓄血。小便不利而发黄者
。
属瘀热。小便不利而至渴欲饮水。湿从火化也。腹微满热瘀不行也。茵陈利湿。山栀降热。
大黄行瘀。导在里之湿热。从小便而解。而身黄自除。
麻黄（二两半去节） 升麻（一两一分） 当归（一两一分） 知母 黄芩 葳蕤（各十八铢）
白术 石膏 干姜 芍药 天冬（去心） 桂枝 茯苓 甘草（各六铢炙）
上十四味。以水一斗。先煮麻黄。一二沸。去上沫。纳诸药。煮取三升。去滓。分温三
服。相去如炊三斗米顷。令尽。汗出愈。
伤寒六七日。大下后。寸脉沉而迟。手足厥逆。下部脉不至。咽喉不利。唾脓血。泄利
下重
者为难治。麻黄升麻汤主之。按此条伤寒六七日。阴液已伤也。复经大下。阳津重竭也。下
后阳气陷入阴中。而阴气亦复衰竭。故寸脉沉而迟。阳气既已下陷。将随下利而亡。故下部
脉不至。以致咽喉不利唾脓血。手足厥逆。泄利不止。种种见证。皆因阳去入阴。上征下夺
。最为危候。故称难治。本方用一派甘寒清热之药。不嫌重复。独任麻黄升麻二味。从阴分
提出阳气。复以桂枝干姜佐诸阴药化气生津。盖热不清则津不复。阳不升则津不固。错杂之
邪。以错杂之药解之。先圣立方之精如此。
Yinchen Hao Tang (Artemisiae Scopariae Decoction) [Herb: Yinchen Hao (Artemisiae Scopariae Herba)] (6 liang) Zhizi (Gardeniae Fructus) (14 pieces, split) Dahuang (Rhei Radix et Rhizoma) (3 liang)
The above three herbs. Use one dou of water. First decoct Yinchen Hao until the volume reduces by six sheng. Add the other two herbs. Decoct to obtain three sheng of liquid. Remove the dregs. Divide into three warm doses. Urination should be smooth. The urine will resemble the color of soapberry juice, appearing deep red. After one night, abdominal distension will decrease. The jaundice will be expelled via urination.
In Shaoyang disease after seven or eight days, if the body turns yellow like the color of an orange peel, with difficult urination and slight abdominal fullness, Yinchen Hao Tang is indicated. In Yangming disease, fever and sweating indicate that heat is venting outward, so jaundice will not occur. If there is only sweating on the head, no sweating on the body, and sweat stops at the neck, accompanied by difficult urination and thirst for fluids, this indicates stagnant heat in the interior, and jaundice will certainly develop. Yinchen Hao Tang is indicated. Note: For jaundice cases where urination is free, it belongs to blood stasis accumulation. Where urination is difficult, it belongs to stagnant heat. When urination is difficult and thirst drives the desire to drink, dampness transforms from fire. Slight abdominal fullness indicates stagnant heat failing to circulate. Yinchen Hao promotes dampness drainage; Zhizi descends heat; Dahuang moves blood stasis. They guide the damp-heat in the interior to resolve via urination, thereby eliminating the jaundice.
Mahuang Shengma Tang (Ephedra and Atractylodes Macrocephala Decoction) [Herb: Mahuang (Ephedrae Herba)] (2.5 liang, nodes removed) Shengma (Cimicifugae Rhizoma) (1 liang 1 fen) Danggui (Angelicae Sinensis Radix) (1 liang 1 fen) Zhi mu (Anemarrhenae Rhizoma) Huang qin (Scutellariae Radix) Wei rui (Polygonati Odorati Rhizoma) (each 18 zhu) Baizhu (Atractylodis Macrocephalae Rhizoma) Shigao (Gypsum Fibrosum) Ganjiang (Zingiberis Rhizoma) Shaoyao (Paeoniae Radix) Tiandong (Asparagi Radix), heart removed Guizhi (Cinnamomi Ramulus) Fuling (Poria) Gancao (Glycyrrhizae Radix et Rhizoma) (each 6 zhu, honey-fried)
The above fourteen herbs. Use one dou of water. First decoct Mahuang for one or two boils. Remove the foam on the surface. Add the remaining herbs. Decoct to obtain three sheng of liquid. Remove the dregs. Divide into three warm doses. Take them within the time it takes to cook three dou of rice. Ensure the entire dose is consumed. Recovery occurs with sweating.
In Shaoyang disease after six or seven days, following severe purgation, if the cun pulse is deep and slow, hands and feet are cold, the lower pulses are imperceptible, the throat is obstructed, pus and blood are expectorated, and diarrhea with a sensation of heaviness in the rectum occurs, the condition is difficult to treat. Mahuang Shengma Tang is indicated. Note: In this case of Shaoyang disease after six or seven days, yin fluids have already been damaged. Subsequent severe purgation causes a second depletion of yang fluids. After purgation, yang qi sinks into the yin, and yin qi also fails. Thus, the cun pulse is deep and slow. Since yang qi has sunk, it risks perishing along with the diarrhea, hence the lower pulses are imperceptible. This leads to throat obstruction, expectoration of pus and blood, cold extremities, and continuous diarrhea. All these manifestations result from yang departing into yin, with symptoms manifesting both above and below, representing a critical prognosis, hence termed "difficult to treat." This formula uses a group of sweet-cold heat-clearing herbs without avoiding redundancy. It uniquely employs Mahuang and Shengma to extract yang qi from the yin level. Guizhi and Ganjiang assist the yin-nourishing herbs to transform qi and generate fluids. Generally, if heat is not cleared, fluids do not recover; if yang does not ascend, fluids do not consolidate. Complex pathogens are resolved with complex prescriptions. The precision of the ancient sages in formulating prescriptions is thus demonstrated.