上吐下泻者，脾胃俱伤也。
白术散 治吐泻，或病后津液不足，口干作渴，和胃生津，止泻痢，将欲成慢惊风者。
人参（去芦） 白术（去芦） 茯苓（去皮） 藿香 木香 干葛 甘草（炙。各等分）
上锉剂，水煎服。若小儿频频泻痢，将成慢惊，加山药、扁豆、肉豆蔻（煨。各一钱） 姜一片，水煎服；
若慢惊已作，加细辛、天麻（各一钱）、全蝎（三个）、白附子（八分、煨）；若冬月，小儿吐蛔，多是胃寒、
胃虚所致，加丁香三粒；如胃虚不能食而大渴不止者，不可用淡渗之药，乃胃中元气少故也，以此汤补之，加
天花粉；若能食而渴者，白虎汤加人参；如中气虚热，口舌生疮，不喜饮冷，服之即效。
烧针丸 治小儿吐泻。
黄丹 朱砂 白矾（枯过）
上为末，枣肉为丸，如黄豆大。每服三四丸。戳针尖上灯焰上烧过，凉，米泔研烂调服。泻者食前，吐者
无拘时。外用绿豆粉，以鸡子清作膏。如吐，涂两脚心；如泻，涂囟门上。止则去之。
又方 治吐泻。四君子汤加藿香、陈皮，一剂而愈。
助胃膏 治元气、脾胃虚弱，吐泻不止，不思饮食及久泻虚寒。
人参 白术（去芦） 茯苓（去皮） 甘草（炙。各一钱半） 白豆蔻（去壳） 木香 山药（炒，五钱）
肉豆蔻（面包煨，捶去油，二个） 砂仁（炒，二十个） 丁香 官桂 藿香（各三钱） 陈皮（五钱）
上为细末，炼蜜为丸，弹子大。每服一丸，米汤化下。
秘方 治小儿水泻。白矾、黄丹各五钱，用葱白捣烂，涂脐上即止。
治小儿吐泻 小丁香，陈皮（各等分）。水煎温服。
一小儿数岁间，每停食，辄服峻利之药，后肚腹膨胀、呕吐泄泻。先用六君子汤，诸症渐愈；又用补中益
气汤而安。
一小儿腹胀，饮食后即泻，手足逆冷，此脾气虚寒也。先用人参理中丸，后用六君子汤而愈。
一小儿吐泻乳食，色白不化，露睛气喘，此脾肺不足、形病俱虚也。先用异功散加桔梗、柴胡顿愈；再用
补中益气汤而安。
一小儿因惊吐泻腹胀，先用六君、木香、柴胡治之稍可；又以五味异功散而愈。后因惊搐痰甚，或用镇惊
化痰之药，倦怠不食而泄益甚。先用异功加木香、钩藤，四剂而愈。（方俱
见补益。）
一小儿面黄肌瘦、泄泻无度、腹胀如鼓、不思饮食，百药不效。余教用好生白术，酒磨浓汁，以温酒调，
空心服，二三日即愈。
白术散（Atractylodes Powder）用于治疗呕吐腹泻，或者病后津液不足、口干口渴，能调和胃气、生津止渴、止住泄痢，适用于快要发展成慢惊风的情况。
药材包括：人参（去除芦头）、白术（去除芦头）、茯苓（去除外皮）、藿香、木香、干葛（即葛根）、甘草（炙过）。以上药材各取等量。
将上述药材切碎成剂，加水煎煮后服用。如果小儿频繁出现泄痢，即将形成慢惊风，加入山药、扁豆、肉豆蔻（煨制），每味一钱，再加一片生姜，加水煎煮服用；
如果慢惊风已经发作，加入细辛、天麻（各一钱）、全蝎（三个）、白附子（八分，煨制）；如果是冬季，小儿呕吐蛔虫，多是由胃寒、胃虚引起，加入三粒丁香；如果是胃虚导致不能进食且大渴不止，不能使用淡渗利湿的药物，这是因为胃中元气不足的缘故，用此汤来补益，加入天花粉；如果能进食但感到口渴，使用白虎汤加人参；如果是中气虚弱产生内热，口舌生疮，不喜欢喝冷饮，服用此方即刻见效。
烧针丸（Needle-Burning Pill）用于治疗小儿呕吐腹泻。
药材包括：黄丹、朱砂、白矾（枯制过）。
将上述药材研成粉末，用枣肉制作成丸药，大小如黄豆。每次服用三四丸。将针尖在灯焰上烧过，冷却后，用米泔水研磨烂调匀送服。用于泄泻的在饭前服用，用于呕吐的不拘泥于时间。外用绿豆粉，用鸡蛋清制成膏状。如果是呕吐，涂抹在两脚心；如果是泄泻，涂抹在囟门上。症状停止后就去掉药物。
又一方：治疗呕吐腹泻。使用四君子汤（Four Gentlemen Decoction）加入藿香、陈皮，服用一剂即可痊愈。
助胃膏（Stomach-Assisting Paste）用于治疗元气、脾胃虚弱导致的呕吐腹泻不止、不思饮食以及久泻引起的虚寒。
药材包括：人参、白术（去除芦头）、茯苓（去除外皮）、甘草（炙过，各一钱半）、白豆蔻（去壳）、木香、山药（炒制，五钱）、肉豆蔻（面包包裹煨制，捶打去油，两个）、砂仁（炒制，二十个）、丁香、官桂、藿香（各三钱）、陈皮（五钱）。
将上述药材研成细末，用炼蜜制作成丸药，大小如弹子。每次服用一丸，用米汤化开送服。
秘方：治疗小儿水样泄泻。白矾、黄丹各五钱，用葱白捣烂，涂抹在肚脐上即可停止。
有一个几岁的小儿，每次停食（积食），就服用峻烈的泻药，后来导致肚腹膨胀、呕吐泄泻。先用六君子汤（Six Gentlemen Decoction），各种症状逐渐好转；后又用补中益气汤（Tonify the Middle and Augment the Qi Decoction）而康复。
有一个小儿腹胀，吃完饭后就泄泻，手脚逆冷，这是脾气虚寒所致。先用人参理中丸（Ginseng Regulate the Middle Pill），后用六君子汤而痊愈。
有一个小儿呕吐和泄泻乳食，颜色发白且不消化，眼睛露睛（睡眠时眼睑不合，眼球外露），气喘，这是脾肺不足、形体与病症俱虚的表现。先用异功散（Yi Gong San）加入桔梗、柴胡，顿服即愈；再用补中益气汤而康复。
有一个小儿因受惊吓而呕吐泄泻、腹胀，先用六君子汤、木香、柴胡治疗，症状稍有好转；后又用五味异功散而痊愈。后来因为受惊吓抽搐痰多，有人使用镇惊化痰的药物，导致倦怠不想吃东西且泄泻更加严重。先用异功散加入木香、钩藤，服用四剂而痊愈。（方剂均见补益篇。）
有一个小儿面色发黄、肌肉消瘦、泄泻无度、腹胀如鼓、不思饮食，百药无效。我教他使用优质的生白术，用酒磨成浓汁，以温酒调匀，空腹服用，两三天即痊愈。
Upper vomiting and lower diarrhea indicate simultaneous injury to the Spleen and Stomach.
Baizhu San (Atractylodes Powder) treats vomiting and diarrhea, or insufficient body fluids after illness, dry mouth with thirst; it harmonizes the Stomach, generates fluids, stops diarrhea and dysentery, and is suitable for cases on the verge of developing slow convulsions (Man Jing Feng).
Ingredients: Renshen (Ginseng Radix et Rhizoma, remove rhizome), Baizhu (Atractylodis Macrocephalae Rhizoma, remove rhizome), Fuling (Poria, remove bark), Huoxiang (Agastaches Herba), Muxiang (Aucklandiae Radix), Gange (Puerariae Radix), Gancao (Glycyrrhizae Radix et Rhizoma, honey-fried). All in equal proportions.
Crush the ingredients into pieces, decoct in water, and take orally. If a child has frequent diarrhea and dysentery, approaching slow convulsions, add Shanyao (Dioscoreae Rhizoma), Bidou (Lablab Semen Album), and Roudoukou (Myristicae Semen, roasted), each 1 qian, plus one slice of fresh ginger, decoct in water and take orally; if slow convulsions have already occurred, add Xixin (Asari Radix et Rhizoma), Tianma (Gastrodiae Rhizoma), each 1 qian, Quanxie (Scorpio), three pieces, and Baifuzi (Typhonii Rhizoma, 8 fen, roasted); in winter, if a child vomits roundworms, it is mostly caused by Cold-Deficiency of the Stomach, add three cloves of Dingxiang (Caryophylli Flos); if Stomach Deficiency prevents eating and there is unquenchable thirst, do not use bland diuretic drugs, as this is due to insufficient Yuanqi (Original Qi) in the Stomach; tonify with this decoction by adding Tianhuafen (Trichosanthis Radix); if the patient can eat but feels thirsty, use Baihu Tang (White Tiger Decoction) plus Renshen; if there is deficiency heat in the Middle Jiao, sores on the mouth and tongue, and aversion to cold drinks, this formula will be effective immediately.
Shaozhen Wan (Needle-Burning Pill) treats pediatric vomiting and diarrhea.
Ingredients: Huangdan (Lithargyrum), Zhusha (Cinnabaris), Baifan (Alumen, calcined).
Grind into powder, form pills with jujube pulp, size of soybeans. Take 3–4 pills per dose. Burn the tip of a needle in a lamp flame, let cool, grind with rice wash water until smooth, and administer with liquid. For diarrhea, take before meals; for vomiting, time is unrestricted. Externally, prepare a paste using Lvdoufen (Vigna Radiata Semen Pulvis) and egg white. For vomiting, apply to both soles of the feet; for diarrhea, apply to the fontanelle. Remove when symptoms cease.
Another prescription: Treats vomiting and diarrhea. Si Junzi Tang (Four Gentlemen Decoction) added with Huoxiang and Chenpi, one dose results in cure.
Zhuwei Gao (Stomach-Assisting Paste) treats continuous vomiting and diarrhea due to weakness of Yuanqi and Spleen-Stomach, loss of appetite, and chronic diarrhea with deficiency-cold.
Ingredients: Renshen, Baizhu (remove rhizome), Fuling (remove bark), Gancao (honey-fried, each 1.5 qian), Baidoukou (Amomi Fructus, shelled), Muxiang, Shanyao (stir-fried, 5 qian), Roudoukou (wrapped in dough and roasted, pounded to remove oil, two fruits), Sharen (Amomi Fructus, stir-fried, 20 seeds), Dingxiang, Guiguan (Cinnamomi Cortex), Huoxiang (each 3 qian), Chenpi (5 qian).
Grind into fine powder, mix with refined honey to form pills the size of quail eggs. Take one pill per dose, dissolved in rice soup.
Secret Recipe: Treats watery diarrhea in children. Baifan and Huangdan, each 5 qian, crushed with scallion whites, applied to the umbilicus to stop diarrhea immediately.
Treat pediatric vomiting and diarrhea: Xiaodingxiang (Caryophylli Flos), Chenpi (equal proportions). Decoct in water and take warm.
A child of several years old, whenever food stagnation occurred, would take harsh purgatives, leading to abdominal distension, vomiting, and diarrhea. First treated with Liujunzi Tang (Six Gentlemen Decoction), symptoms gradually improved; then treated with Buzhong Yiqi Tang (Tonify the Middle and Augment the Qi Decoction) for recovery.
A child with abdominal distension, diarrhea immediately after eating, and cold extremities, indicating Spleen-Qi Deficiency-Cold. First treated with Renshen Lizhong Wan (Ginseng Regulate the Middle Pill), then cured with Liujunzi Tang.
A child vomiting and diarrhea-ing undigested milk/food, pale in color, with exposed eyes during sleep (Lou Jing) and panting, indicating insufficiency of Spleen and Lung, with both form and pathology in a state of deficiency. First treated with Yigong San (Yi Gong Powder) added with Jiegeng (Platycodonis Radix) and Chaihu (Bupleuri Radix), taken in one dose for immediate cure; then stabilized with Buzhong Yiqi Tang.
A child with vomiting, diarrhea, and abdominal distension due to fright, first treated with Liujunzi Tang, Muxiang, and Chaihu, showing slight improvement; then cured with Wuwei Yigong San (Five-Ingredient Yi Gong Powder). Later, due to fright-induced convulsions and excessive phlegm, someone used sedating and phlegm-resolving drugs, causing fatigue, anorexia, and worsened diarrhea. First treated with Yigong San added with Muxiang and Gouteng (Uncariae Ramulus Cum Uncis), four doses resulted in cure. (Formulas are all found in the Tonification section.)
A child with sallow complexion, emaciation, unceasing diarrhea, drum-like abdominal distension, and anorexia, unresponsive to various medicines. I instructed using high-quality raw Baizhu, ground with wine into a thick juice, mixed with warm wine, taken on an empty stomach; cured within two to three days.