《千金》论曰∶大肠腑者,主肺也,鼻柱中央以为候也。肺所以合气于大肠者,大肠为
行道传泻之腑也,号监仓掾,重二斤十二两,长一丈二尺,广六寸,脐右回叠积还反十二曲
,贮水谷一斗二升,主十二时,定血脉和利精神。又曰,肺前受病,移于大肠,肺咳不已,
则大肠受之,大肠咳则遗失便利。肺应皮,皮浓即大肠浓,皮薄即大肠薄,皮缓腹裹大者,
大肠缓而长,皮急者,大肠急而短,皮滑者,大肠直,皮肉不相离者,大肠结。(《删繁》
同)
又扁鹊云∶大肠绝不疗,何以知之?泄痢无度,痢绝则死。实即肠热,热则胀满不通,
口为生疮,食下入肠,则肠实而胃虚,下胃则胃实而肠虚。所以实而不满,乍实乍虚,乍来
乍去,虚则伤寒,寒则肠中雷鸣,泄青白之痢,而发于气水,根在大肠。大肠有寒, 溏有
热,便肠垢。大肠有宿食,寒栗发热,有时如疟状。大肠病者,肠中切痛而鸣濯濯,冬日重
感于寒则泄,当脐而痛,不能久立,与胃同候,肠中雷鸣,气上冲胸,喘不能久立,邪在大
肠也,大肠胀鸣而痛,肠寒即泄食不化。(出第十八卷中)
《千金》∶凡右手寸口气口以前脉阳实者,手阳明经也。病苦肠满,善喘咳,面赤身热
,喉咽中如核状,名曰大肠实热也。
又疗大肠实热,腹胀不通,口为生疮。生姜泄肠汤方。
生姜 橘皮 青竹茹 白术 黄芩 栀子(各三两) 桂心(一两) 生地黄(十两) 茯
苓
上十一味,切,以水七升,煮取三升,去滓,下芒硝,分三服。忌生葱、芜荑、海藻、
菘菜、醋物、桃、李、雀肉等。(出第十八卷中)
《删繁》疗肺脉厥逆大于寸口,主大肠热咳上气,喘鸣心烦。麻黄汤方。
麻黄(六两去节) 芍药 生姜 半夏(洗十遍) 细辛 五味子(各三两) 桂心(二
两)
石膏(八两)
上八味,切,以水九升,先煮麻黄七八沸,去沫,次下诸药,煎取三升,去滓,分三服
。忌羊肉、饧、生葱、生菜等。
又疗大肠热甚,胁满掌中热。淡竹叶饮,泄热气方。
淡竹叶(切三升) 橘皮(三两) 干苏叶(三两) 白术(四两) 甘草(一两炙) 葱
白(切
一升) 桂心(一两) 石膏(六两碎) 杏仁(六十枚去皮、尖,熬)
上九味,切,以水一斗二升,先煮竹叶取一斗,去滓,澄清,取九升,下诸药,煮取三
升,绞去滓,分三服。若须利下,纳芒硝三两。忌海藻、菘菜、桃、李、雀肉、生葱。(并
出第二卷中)
The *Qianjin Fang* (Essential Prescriptions Worth a Thousand Gold) states: The Large Intestine, as a fu organ, is interiorly-exteriorly related to the Lung. Its condition can be observed at the center of the nasal column. The reason the Lung combines with the Large Intestine to regulate qi is that the Large Intestine is the fu organ responsible for conducting and excreting waste, often referred to as the "Intendant of Granaries." It weighs two jin and twelve liang, has a length of one zhang and two chi, and a width of six cun. It is coiled and folded in twelve curves on the right side of the umbilicus, capable of storing water and grain totaling one dou and two sheng. It corresponds to the twelve double-hours of the day, helping to harmonize blood vessels and stabilize the spirit. Furthermore, if the Lung is first affected by pathogenic factors, the disease may transfer to the Large Intestine; if lung cough persists untreated, the Large Intestine will also be involved, leading to fecal and urinary incontinence during large intestine cough. The Lung corresponds to the skin; thick skin indicates a thick large intestine, while thin skin indicates a thin large intestine. Loose skin with a large abdomen suggests a relaxed and elongated large intestine; tight skin suggests a contracted and short large intestine; smooth skin indicates a straight large intestine; closely adhered skin and flesh indicate a knotted or obstructed large intestine. (*Shanfan* records this identically.)
Additionally, Bian Que stated: When the function of the Large Intestine completely fails, it cannot be treated. How do we know this? If diarrhea and dysentery are unceasing, and defecation ceases (indicating exhaustion of righteous qi), death ensues. In cases of excess syndrome, there is intestinal heat, causing distension, fullness, and obstruction, along with mouth sores. After food enters the intestine, it results in an excess state of the intestine and a deficiency state of the stomach; if the pathology descends to affect the stomach, the stomach becomes excess while the intestine becomes deficient. Thus, the presentation is "excess without fullness" (referring to alternating patterns of excess and deficiency), with symptoms appearing and disappearing intermittently. In deficiency syndromes, one is susceptible to cold damage; cold in the intestines causes borborygmus (rumbling sounds), passage of greenish-white loose stools, and disturbances in qi and fluid metabolism, with the root located in the Large Intestine. Cold in the Large Intestine leads to loose stools; heat in the Large Intestine leads to the passage of intestinal mucus/filth. Retained food in the Large Intestine causes chills and fever, sometimes resembling malaria. Disease of the Large Intestine presents with severe abdominal pain and loud borborygmus ("zhuozhuo" sound); if exposed to cold again in winter, diarrhea occurs, with pain at the umbilicus, inability to stand for long periods, and pulse signs similar to those of the Stomach. There is borborygmus, qi rushing up to the chest, panting, and inability to stand for long periods, indicating evil qi residing in the Large Intestine. Distension, rumbling, and pain in the Large Intestine, combined with cold intestines, lead to diarrhea and undigested food. (From Volume 18)
The *Qianjin Fang* states: Whenever the yang pulse at the Cun position (prior to the Kou position) on the right hand is excess and solid, it indicates pathology of the Hand-Yangming Large Intestine Meridian. Symptoms include abdominal fullness, frequent panting and coughing, red face, body heat, and a sensation of a foreign body like a kernel in the throat and pharynx. This is named Large Intestine Excess-Heat Syndrome.
Another prescription treats Large Intestine Excess-Heat, characterized by abdominal distension and obstruction, and mouth sores. Shengjiang Xiechang Tang (Ginger Decoction to Drain the Intestines).
Zingiberis Rhizoma Recens (Fresh Ginger) [Shengjiang], Citri Reticulatae Pericarpium (Tangerine Peel) [Jupi], Bambusae Caulis Praeparatus (Prepared Bamboo Shoots) [Qingzhuru], Atractylodis Macrocephalae Rhizoma (Macrocephala Burreed Rhizome) [Baizhu], Scutellariae Radix (Skullcap Root) [Huangqin], Gardeniae Fructus (Gardenia Fruit) [Zhizi] (each 3 liang), Cinnamomi Cortex (Cinnamon Bark) [Guixin] (1 liang), Rehmanniae Radix Fresha (Fresh Rehmannia Root) [Shengdihuang] (10 liang), Poria (Poria Cocos) [Fuling].
The above eleven ingredients are cut, boiled in seven sheng of water until three sheng remain. Strain the dregs, add Natrii Sulfas (Mirabilite) [Mangxiao], and divide into three doses. Avoid raw scallions, Elaeagnus fruit [Wuyi], Sargassum [Haizao], Chinese cabbage [Songcai], vinegar-preserved foods, peaches, plums, and sparrow meat. (From Volume 18)
*Shanfan* treats Jue-ni (reversal) of the Lung pulse being larger than the Cun position, primarily for Large Intestine Heat-cough, qi rebellion, wheezing with sound, and irritability. Mahuang Tang (Ephedra Decoction).
Ephedrae Herba (Ephedra Stem) [Mahuang] (6 liang, remove joints), Paeoniae Radix Alba (White Peony Root) [Shaoyao], Zingiberis Rhizoma Recens (Fresh Ginger) [Shengjiang], Pinelliae Rhizoma Preparatum (Prepared Pinellia Tuber) [Banxia] (washed ten times), Asari Radix et Rhizoma (Asarum Root) [Xixin], Schisandrae Fructus (Schisandra Berry) [Wuweizi] (each 3 liang), Cinnamomi Cortex (Cinnamon Bark) [Guixin] (2 liang), Gypsum Fibrosum (Gypsum) [Shigao] (8 liang).
The above eight ingredients are cut, boiled in nine sheng of water. First boil Ephedra for seven or eight boils, skim off the foam, then add the remaining herbs. Simmer until three sheng remain. Strain the dregs and divide into three doses. Avoid mutton, maltose syrup [Xing], raw scallions, and raw vegetables.
Another prescription treats severe Large Intestine Heat, presenting with hypochondriac fullness and heat in the palms. Danzhuye Yin (Bamboo Leaf Drink), a formula to drain heat qi.
Phyllostachys nigra var. henonis Leaves (Bamboo Leaves) [Danzhuye] (cut, 3 sheng), Citri Reticulatae Pericarpium (Tangerine Peel) [Jupi] (3 liang), Perillae Folium (Perilla Leaf) [Gansuye] (3 liang), Atractylodis Macrocephalae Rhizoma (Macrocephala Burreed Rhizome) [Baizhu] (4 liang), Glycyrrhizae Radix et Rhizoma (Licorice Root) [Gancao] (1 liang, honey-fried), Allii Fistulosi Bulbus (Scallion White) [Congbai] (cut, 1 sheng), Cinnamomi Cortex (Cinnamon Bark) [Guixin] (1 liang), Gypsum Fibrosum (Gypsum) [Shigao] (6 liang, crushed), Armeniacae Semen Amarum (Bitter Apricot Seed) [Xingren] (60 seeds, peeled and removed of tips, roasted).
The above nine ingredients are cut, boiled in twelve sheng of water. First boil bamboo leaves until one dou remains. Strain the dregs, clarify the liquid, and take nine sheng. Add the other herbs and simmer until three sheng remain. Strain through cloth and divide into three doses. If purgation is desired, add Natrii Sulfas (Mirabilite) [Mangxiao] (3 liang). Avoid Sargassum [Haizao], Chinese cabbage [Songcai], peaches, plums, sparrow meat, and raw scallions. (All from Volume 2)