呕逆吐痢者，由肠胃虚，邪气并之，脏腑之气自相乘克也。《脉经》云∶心乘肝则吐痢
。心，火也；肝，木也；火木，子母也。火乘于木，子扶母也，此为二脏偏实也。大肠，金
也；胃，土也；金土，母子也。大肠虚则金气衰微，不能扶土，致令胃气虚弱，此两腑偏虚
也。木性克土，火性克金，是为火木相扶，心肝俱盛；而金畏于火，土畏于木，则为肠胃皆
弱。肠虚弱则泄痢，胃虚弱则呕吐，故呕逆而复吐痢也。
诊其关上脉数，其人吐。跗阳脉微而涩，微则下痢，涩即吐逆也。
春伤于风，邪气留连，因饮食不节，肠胃虚弱，邪气乘之，则变为痢。痢则腑脏俱虚，
水气相并，上乘于心，心气不宣畅，痞满在内，故令痢而兼烦者也。
夫水谷之精，化为血气津液，以养脏腑。脏腑虚，受风邪，邪入于肠胃，故痢。痢则津
液空竭，腑脏虚燥，故痢而兼渴也。渴而引饮，则痢不止，翻益水气，脾胃已虚，不能克消
水，水气流溢，浸渍肌肉，则变肿也。
凡痢，口里生疮，则肠间亦有疮也。所以知者，犹如伤寒热病，胃烂身则发疮也。此由
挟热痢，脏虚热气内结，则疮生肠间；热气上冲，则疮生口里。然肠间、口里生疮，皆胃之
虚热也。胃虚谷气弱，则九虫、三尸发动，则变成 。
痢兼肿者，是痢久脾虚，水气在于肌肉之所为也。脾与胃合，俱象土，脾候身之肌肉，
胃为水谷之海，而以脾气克消水谷也。风邪在内，肠胃虚弱，则水谷变为痢也。膀胱与肾合
，俱象水，膀胱为津液之腑。小肠与心合，俱象火，而津液之水行于小肠，下为小便也。土
性本克水，今因痢，脾胃虚弱，土气衰微，不能克制于水，致令水得妄行，不流于小肠而浸
渍脏腑，散流皮肤，与气相搏，腠理壅闭，故痢而肿也。
呕吐、呃逆、吐泻和痢疾，是由于肠胃虚弱，邪气侵袭，导致脏腑之气相互乘克所致。《脉经》说：心气乘袭肝气则出现吐泻。心属火；肝属木；火与木是母子关系。火气乘袭木气，是子助母，这是两脏偏于实证。大肠属金；胃属土；金与土是母子关系。大肠虚弱则金气衰微，不能资助脾土，致使胃气虚弱，这是两腑偏于虚证。木性克制土，火性克制金，这就是火与木相互扶持，心肝二脏俱盛；而金畏惧火，土畏惧木，这就导致肠胃都虚弱。肠道虚弱则发生泄泻痢疾，胃部虚弱则发生呕吐，所以出现呃逆并伴有吐泻痢疾的症状。
诊察患者关部脉象数动，其人会呕吐。跗阳脉微弱而涩，脉微主下痢，脉涩主吐逆。
春季感受风邪，邪气留滞不去，加上饮食不节，导致肠胃虚弱，邪气乘虚而入，就会转变为痢疾。患痢疾时脏腑都虚弱，水气相并，上乘于心，使心气不能宣畅，痞闷胀满在体内，所以导致痢疾兼有烦闷的症状。
水谷的精微物质，转化为血、气、津液，用来滋养脏腑。脏腑虚弱，受风邪侵袭，邪气进入肠胃，所以发生痢疾。患痢疾则津液枯竭，脏腑虚燥，所以痢疾兼有口渴。口渴而饮水，则痢疾不止，反而增加水气，脾胃已经虚弱，不能运化消解水湿，水气流溢，浸渍肌肉，就转变为水肿。
凡是痢疾患者，如果嘴里生疮，那么肠间也有疮疡。之所以这样判断，就像伤寒热病，胃烂身败就会发疮一样。这是由于挟热痢，脏虚热气内结，所以在肠间生疮；热气上冲，就在口里生疮。然而肠间和口里生疮，都是由于胃的虚热所致。胃虚谷气弱，就会导致九虫、三尸发动，从而变成疳积（注：原文此处似有缺字或异体字“ ”，结合语境及中医常识，通常指“疳”或类似虫积病症，此处依文意译为疳积/虫积）。
痢疾兼见水肿，是因为痢疾日久导致脾虚，水气停留在肌肉之间所致。脾与胃相合，都象征土，脾主管身体的肌肉，胃是水谷之海，依靠脾气来运化消解水谷。风邪在内，肠胃虚弱，水谷就会变为痢疾。膀胱与肾相合，都象征水，膀胱是津液之腑。小肠与心相合，都象征火，津液之水运行于小肠，向下形成小便。土的属性本应克制水，现在因为痢疾，脾胃虚弱，土气衰微，不能克制水，导致水气妄行，不流入小肠而浸渍脏腑，散流于皮肤，与气相搏，腠理壅塞闭阻，所以出现痢疾兼水肿的症状。
Vomiting, hiccups, vomiting with diarrhea, and dysentery are caused by the deficiency of the stomach and intestines, where pathogenic factors invade and cause the qi of the zang-fu organs to mutually overcome each other. The *Mai Jing* (Pulse Classic) states: "When Heart qi overcomes Liver qi, vomiting and diarrhea occur." The Heart belongs to Fire; the Liver belongs to Wood; Fire and Wood have a mother-son relationship. When Fire overcomes Wood, it is the son assisting the mother, indicating that both organs are in a state of excess. The Large Intestine belongs to Metal; the Stomach belongs to Earth; Metal and Earth have a mother-son relationship. When the Large Intestine is deficient, Metal qi becomes weak and fails to support Earth, causing Stomach qi to become weak, indicating that both fu organs are in a state of deficiency. Wood nature overcomes Earth, and Fire nature overcomes Metal. This means Fire and Wood support each other, making the Heart and Liver abundant; while Metal fears Fire and Earth fears Wood, resulting in weakness of both the stomach and intestines. Weakness of the intestines leads to diarrhea and dysentery, while weakness of the stomach leads to vomiting. Therefore, hiccups occur accompanied by vomiting, diarrhea, and dysentery.
Palpating the Guan position pulse as rapid indicates vomiting. If the Fuyang pulse is faint and choppy, a faint pulse indicates dysentery, and a choppy pulse indicates vomiting and hiccups.
If wind pathogen is injured in spring, and the pathogen lingers, combined with irregular diet leading to weakness of the stomach and intestines, the pathogen takes advantage of this weakness to transform into dysentery. In dysentery, the zang-fu organs are all deficient, and Water qi merges with it, ascending to overwhelm the Heart. The Heart qi cannot circulate freely, causing stagnation and fullness internally, thus leading to dysentery complicated by irritability.
The essence of food and drink transforms into blood, qi, and body fluids to nourish the zang-fu organs. When the zang-fu organs are deficient and affected by wind pathogen, the pathogen enters the stomach and intestines, causing dysentery. Dysentery depletes body fluids, leaving the zang-fu organs deficient and dry, thus causing dysentery complicated by thirst. Thirst leads to drinking water, which prevents the dysentery from stopping, further increasing Water qi. Since the Spleen and Stomach are already weak and cannot transform and transport the water, the water flows溢出 (overflows), infiltrates the muscles, and transforms into edema.
In cases of dysentery, if sores appear in the mouth, there are also sores in the intestines. We know this because, similar to how in cold damage febrile diseases, rotting of the stomach manifests as sores on the body. This is due to heat-complicated dysentery, where internal deficiency heat knots together, causing sores in the intestines; when heat qi rushes upward, sores appear in the mouth. However, sores in both the intestines and the mouth are due to deficiency-heat of the Stomach. When Stomach deficiency leads to weak grain qi, the Nine Worms and Three Corpses are activated, transforming into [parasitic accumulation/infantile malnutrition].
Dysentery complicated by edema is caused by long-standing dysentery leading to Spleen deficiency, with Water qi residing in the muscles. The Spleen and Stomach combine and both symbolize Earth; the Spleen governs the muscles of the body, and the Stomach is the sea of water and grain, relying on Spleen qi to transform and transport water and grain. With wind pathogen inside and weakness of the stomach and intestines, water and grain transform into dysentery. The Bladder and Kidney combine and both symbolize Water; the Bladder is the fu organ of body fluids. The Small Intestine and Heart combine and both symbolize Fire; body fluid water travels through the Small Intestine and exits downward as urine. The nature of Earth is to overcome Water. Now, due to dysentery, the Spleen and Stomach are weak, Earth qi is declining, and it cannot overcome Water, causing Water qi to act recklessly. Instead of flowing into the Small Intestine, it infiltrates the zang-fu organs, scatters and flows in the skin, combats with Qi, obstructs the couli (pores/skin texture), thus resulting in dysentery complicated by edema.