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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.