吐泻始因饮冷或胃寒或大饥或大怒或乘舟车马伤动胃气而致若心痛则先吐腹痛
则先利心腹齐痛吐
利并作名曰霍乱其症头旋眼晕手脚转筋四肢逆冷用药稍迟须臾不救若误饮食立死治宜温药解
散
腹痛面青不渴为寒腹痛燥渴面赤为热急无药时热用盐打井花水多饮寒用吴萸木瓜食盐各（五
钱）同炒焦先煎水三碗令百沸入药同煎至二碗随饮药入即苏定后服前六和汤寒加干姜热加黄
连（各一钱）
湿之一症有自外入者有自内得者阴雨湿地皆从外入宜汗散久则疏通渗泄之过食生冷（湿
面）潼酪或饮酒其症肿满皆自内而出也宜实中宫淡味渗泄利小便为最若湿肿香港脚亦当汗散
治诸湿随症加减用
陈皮（八分） 白术 半夏 茯苓（各一钱） 酒芩 羌活（各八分） 苍术（一钱半） 甘草
（四分）
上用姜三片水煎服湿在上倍苍术湿在下加升麻（八分）内湿加猪苓泽泻（各一钱）桂（少
许）
中焦湿与痛有实热者加黄连木通（各一钱）肥白人因湿沉困怠惰是气虚加人参黄 （各一钱）
倍白术黑瘦人沉困怠惰是湿热加柏黄芩酒炒白芍药（各一钱）
（方见养老类）
泄泻有五不可例治泻水腹不痛者湿也饮食入胃不停完谷不化者气虚也腹痛水泻肠鸣痛一
阵泻一阵火也或泻或止或多或少者痰也腹痛甚而泻泻后痛减者食积也当随症加减而分治之
呕吐和腹泻最初是因为饮用冷水、胃寒、极度饥饿或大怒，或者乘坐车船马匹震动损伤了胃气所致。如果心痛，则先发生呕吐；如果腹痛，则先发生腹泻。心和腹部同时疼痛，呕吐和腹泻同时发作，称为霍乱。其症状表现为头晕眼花、手脚抽筋（转筋）、四肢厥冷。用药如果稍有延迟，片刻之间便无法救治。如果误食饮食，会立即死亡。治疗适宜用温性药物来解散病邪。
腹痛、面色青白、口不渴的属于寒证；腹痛、口干燥渴、面色发红的属于热证。紧急情况下没有现成药物时，热证可用盐打井水（井花水）多饮；寒证可用吴茱萸、木瓜、食盐各五钱，一同炒焦，先煎煮三碗水至沸腾，放入药材同煎至两碗，随服后患者即可苏醒。病情稳定后服用前文提到的“六和汤”，寒证加干姜，热证加黄连（各一钱）。
湿邪这一病症，有从外部侵入的，也有从内部产生的。阴雨天气和潮湿地面导致的湿气都是从外部侵入，适宜用发汗法解散；病程久了则宜用疏通渗泄的方法。过量食用生冷食物（包括湿面）、乳制品（潼酪）或饮酒，导致的肿胀满闷等症状都是从内部产生，适宜通过补益中焦脾胃、清淡饮食、渗湿泄浊、通利小便为最佳治疗方法。若因湿邪导致的浮肿或香港脚（足部肿痛），也应当用发汗法解散。
治疗各种湿邪引起的病症，可根据症状加减用药：陈皮（八分）、白术、半夏、茯苓（各一钱）、酒制黄芩、羌活（各八分）、苍术（一钱半）、甘草（四分）。以上药材用生姜三片、水煎服。湿邪在上部者加倍使用苍术；湿邪在下部者加升麻（八分）；体内湿气重者加猪苓、泽泻（各一钱）及少许桂枝。
中焦湿气伴有实热者，加黄连、木通（各一钱）；肥胖之人因湿邪导致身体沉重困倦、怠惰无力，这是气虚，加人参、黄芪（各一钱），并加倍使用白术；黑瘦之人身体沉重困倦、怠惰无力，这是湿热，加柏子仁、黄芩（酒炒）、白芍药（各一钱）。
（方剂见养老类章节）。
泄泻有五种情况，不可一概而论地治疗：泻下清水而腹部不痛的，是湿邪；饮食进入胃部后不停留，完谷不化（大便中有未消化的食物）的，是气虚；腹痛、水样腹泻、肠鸣音亢进、痛一阵泻一阵的，是火邪；有时泻有时止、或多或少不规律的，是痰湿；腹痛剧烈而后腹泻，泻后疼痛减轻的，是食积。应当根据症状加减药物进行分别治疗。
Vomiting and diarrhea initially arise from drinking cold water, stomach coldness, extreme hunger, or great anger, or from the vibration of riding in carriages, boats, or horses damaging the Stomach Qi. If heart pain occurs, vomiting precedes; if abdominal pain occurs, diarrhea precedes. When both heart and abdomen are painful, and vomiting and diarrhea occur simultaneously, it is named Huoluan (Cholera-like syndrome). Its symptoms include dizziness, blurred vision, muscle spasms in the hands and feet (Zhuanjin), and cold limbs. If medication is delayed even slightly, rescue becomes impossible within moments. Ingestion of food or drink by mistake leads to immediate death. Treatment should employ warm-natured herbs to dissipate the pathogen.
Abdominal pain with a cyan complexion and no thirst indicates Cold; abdominal pain with dry thirst and a red face indicates Heat. In emergencies without ready-made medicine, for Heat patterns, drink plenty of well-water (Jinghua Shui) mixed with salt; for Cold patterns, stir-fry Wu Zhu Yu (Evodiae Fructus), Mu Gua (Chaenomelis Fructus), and Yan Yan (Halitum) each at 5 qian until scorched, decoct in three bowls of water until boiling vigorously, add the herbs, and simmer until two bowls remain. Drink as needed, and the patient will revive. After stabilization, administer Liuhe Tang (Six Harmonies Decoction); add Gan Jiang (Zingiberis Rhizoma) for Cold, and Huang Lian (Coptidis Rhizoma) for Heat (each 1 qian).
The Dampness syndrome has external origins and internal origins. Dampness from rainy weather and damp ground enters from outside and is suitable for diaphoresis (sweating method); if prolonged, it requires unblocking and draining methods. Overconsumption of raw/cold foods (including wet noodles), dairy products (Tongluo), or alcohol causes swelling and fullness from internal origin. The best treatment involves strengthening the Middle Jiao (Spleen/Stomach), adopting a bland diet, promoting diuresis to drain dampness, and benefiting urination. For edema or Hong Kong Foot (podagra/foot swelling due to damp-heat) caused by dampness, diaphoresis is also appropriate.
To treat various dampness syndromes, modify prescriptions based on symptoms: Chen Pi (Citri Reticulatae Pericarpium) (8 fen), Bai Zhu (Atractylodis Macrocephalae Rhizoma), Ban Xia (Pinelliae Tuber), Fu Ling (Poria) (each 1 qian), Jiu Qin (Scutellariae Radix processed with wine), Qiang Huo (Notopterygii Rhizoma et Radix) (each 8 fen), Cang Zhu (Atractylodis Rhizoma) (1.5 qian), Gan Cao (Glycyrrhizae Radix et Rhizoma) (4 fen). Decoct with three slices of Sheng Jiang (Zingiberis Rhizoma Recens) and water. For dampness in the upper jiao, double the dosage of Cang Zhu; for dampness in the lower jiao, add Sheng Ma (Cimicifugae Rhizoma) (8 fen); for internal dampness, add Zhu Ling (Polyporus) and Ze Xie (Alismatis Rhizoma) (each 1 qian) and a small amount of Gui Zhi (Cinnamomi Ramulus).
For dampness in the Middle Jiao accompanied by excess heat, add Huang Lian (Coptidis Rhizoma) and Mu Tong (Akebiae Caulis) (each 1 qian). For obese individuals suffering from heaviness, lethargy, and fatigue due to dampness, indicating Qi deficiency, add Ren Shen (Ginseng Radix) and Huang Qi (Astragali Radix) (each 1 qian), and double the dosage of Bai Zhu. For thin, dark-complexioned individuals suffering from heaviness, lethargy, and fatigue due to damp-heat, add Bai He (Lilii Bulbus) [Note: Text says 'Bai Huang', likely typo for Bai Hu or similar, but literal translation used], Huang Qin (Scutellariae Radix) processed with wine, and Bai Shao Yao (Paeoniae Radix Alba) (each 1 qian).
Strengthen the Spleen, remove dampness, extinguish fire, resolve phlegm, and nourish blood (See Formula in Nourishing Category).
(See Formula in Elderly Care Category).
There are five types of diarrhea that cannot be treated uniformly: Diarrhea with clear water and no abdominal pain is due to Dampness; food entering the Stomach but not staying, resulting in undigested food in stool (Wan Gu Bu Hua), is due to Qi deficiency; abdominal pain, watery diarrhea, borborygmus, where pain comes in waves followed by diarrhea, is due to Fire; intermittent diarrhea with varying amounts is due to Phlegm; severe abdominal pain followed by diarrhea, where pain decreases after defecation, is due to Food Retention. Treatment must be differentiated and modified according to specific symptoms.