凡小儿呕吐，多伤于胃则呕，或上有痰，宜服∶
和胃二陈汤
半夏 广皮 藿香 神曲 麦芽（炒） 紫朴 苍术 茯苓（各一钱） 甘草（五分） 泡姜（引） 水
煎服。
唇红呕吐，加竹茹、石膏、黄芩各一钱；小便短加木通、前仁各一钱；吐兼泻而有寒热
者，加紫苏、前胡、白芷、泽泻；寒重吐不止者，服逐寒荡惊汤，方见惊风门，照后加减，
用生姜汁、蜂蜜为引，煎服。
小儿霍乱之病起于仓卒，其证挥霍扰乱，无有宁止。多因夹食伤寒，阴阳不合，上吐下
泻，而烦躁闷乱者是也。其邪在上焦则吐，邪在下焦则泻，邪在中焦则上吐下泻。又有上不
能吐，下不能泻者，为干霍乱，又名绞肠痧。其病因脾胃之邪无从内出。若加喘满作搐者，
十不救一。凡上吐下泻，当分寒热而治之。凡初起勿饮米汤，以主胃邪者难治，宜服藿香正
气散。有先泻后吐者，乃脾胃虚寒，故先泻白水，而吐亦不多，口气缓而神气慢，额上有汗
，六脉沉细，此为虚冷，宜温之，六君子汤。不愈则理中汤加霍香、木瓜各一钱。
有先吐后泻者，乃脾胃有热，故喘促唇红吐沫，面赤渴饮水浆，脉洪而数，此为热也。
和解之，五苓散加藿香。
其于霍乱，上不得吐，下不得泻，最为危迫，速用盐汤探吐之，必待其吐出宿食积痰，
然后用药，或以针刺十指甲边，令血出，或刺膝弯名委中穴，出血即解，后用藿香正气散。
藿香正气散 治风邪伤胃，阴阳不和，上吐下泻。
紫苏 腹皮 桔梗 茯苓 法夏 紫朴 白芷 广皮 炙草（等分） 生姜（三片） 大枣（三枚
水煎服。
六君子汤即四君子汤加陈皮、法夏，方见伤暑门。
理中汤见伤暑门，加藿香、木瓜各二钱。
加味五苓散 治伤暑霍乱吐泻。
焦术 茯苓（各二钱） 猪苓 泽泻 安桂 藿香 木瓜 西砂（各一钱） 生姜（一片） 大枣（一
枚） 灯芯（引）
盐汤吐法 其法以温水调食盐略咸，一大碗，令小儿饮之，良久以指探其喉间则吐，一
吐即安。
一方用绿豆、胡椒各二十粒，研细，水煎服。如渴甚，将二物研细，以新汲水调服即安
。
一方六一散调姜汁水服。
凡是小儿呕吐，大多是因为胃气受损而引发呕吐，或者上焦有痰湿阻滞，适宜服用：
和胃二陈汤
半夏、广陈皮、藿香、神曲、麦芽（炒制）、厚朴、苍术、茯苓（各一钱），甘草（五分），泡姜（作为药引），加水煎煮后服用。
若嘴唇发红且呕吐，加竹茹、石膏、黄芩各一钱；若小便短少，加木通、车前子各一钱；若呕吐兼有腹泻并伴有寒热交替症状，加紫苏、前胡、白芷、泽泻；若寒气重导致呕吐不止，服用逐寒荡惊汤（方剂见惊风门章节），按照该方的加减法使用，以生姜汁、蜂蜜为药引，煎煮后服用。
小儿霍乱病起于突然之间，其病症表现为挥霍撩乱，没有片刻安宁。多因夹带饮食停滞又感受伤寒，导致阴阳失调，出现上吐下泻，以及烦躁闷乱的症状。邪气在上焦则引起呕吐，邪气在下焦则引起腹泻，邪气在中焦则上吐下泻。又有不能吐也不能泻的情况，称为干霍乱，又名绞肠痧。这是因为病因在于脾胃之邪无法从体内排出。如果加上气喘胸闷、抽搐等症状，十个人中救不活一个。凡是上吐下泻，应当区分寒证和热证来治疗。凡发病初期不要喝米汤，因为主胃中有邪气者难治，适宜服用藿香正气散。
如果有先腹泻后呕吐的，这是脾胃虚寒所致，所以先排出白水样便，呕吐也不剧烈，口气缓和、精神萎靡，额头出汗，六脉沉细，这属于虚冷证，适宜温补，用六君子汤。若无效，则用理中汤加藿香、木瓜各一钱。
如果有先呕吐后腹泻的，这是脾胃有热所致，所以气喘急促、嘴唇红、吐泡沫，面色红赤、口渴想喝水浆，脉象洪大而数，这属于热证。采用和解之法，用五苓散加藿香。
至于霍乱中，上不得吐，下不得泻的情况，最为危急紧迫，迅速用盐汤催吐，必须等到吐出宿食积痰后，再用药治疗；或者针刺十指指甲边缘，令其出血，或针刺膝盖弯曲处的委中穴，令其出血即可缓解，之后再用藿香正气散。
藿香正气散 治疗风邪伤胃，阴阳不和，上吐下泻。
紫苏、大腹皮、桔梗、茯苓、法半夏、厚朴、白芷、广陈皮、炙甘草（等分），生姜（三片），大枣（三枚），加水煎煮后服用。
六君子汤即四君子汤加陈皮、法半夏，方剂见伤暑门章节。
理中汤见伤暑门章节，加藿香、木瓜各二钱。
加味五苓散 治疗伤暑引起的霍乱吐泻。
焦白术、茯苓（各二钱），猪苓、泽泻、肉桂、藿香、木瓜、砂仁（各一钱），生姜（一片），大枣（一枚），灯芯草（作为药引）。
盐汤催吐法 此法用温水调食盐至略咸，一大碗，让小儿饮下，过一会儿用手指探喉间催吐，一次呕吐后即可安定。
另一方用绿豆、胡椒各二十粒，研成细末，加水煎煮后服用。如果极度口渴，将这两物研细，用新汲水调服即可安定。
另一方用六一散调姜汁水服用。
Whenever children suffer from vomiting, it is mostly due to stomach injury causing vomiting, or phlegm accumulation in the upper jiao (Upper Burner), for which He Wei Er Chen Tang (Harmonize Stomach Two-Chen Decoction) is suitable:
Banxia (Pinelliae Rhizoma), Guangpi (Citri Reticulatae Pericarpium), Huoxiang (Agastaches Herba), Shenqu (Massae Fermentatae Medicinalis), Maiya (Hordei Fructus Germinatus, stir-fried), Zipu (Magnoliae Officinalis Cortex), Cangzhu (Atractylodis Rhizoma), Fuling (Poria), each at one qian; Gancao (Glycyrrhizae Radix et Rhizoma) at five fen; Paojiang (Prepared Ginger) as a guide; decocted in water and taken orally.
If lips are red with vomiting, add Zhuru (Bambusae Caulis in Taenia), Shigao (Gypsum Fibrosum), Huangqin (Scutellariae Radix), each at one qian; if urine is scanty, add Mutong (Akebiae Caulis), Qianren (Plantaginis Semen), each at one qian; if vomiting is accompanied by diarrhea with alternating chills and fever, add Zisu (Perillae Folium), Qianhu (Peucedani Radix), Baizhi (Angelicae Dahuricae Radix), Zexie (Alismatis Rhizoma); if severe cold causes incessant vomiting, take Zhu Han Dang Jing Tang (Expel Cold and Dispel Shock Decoction, see the chapter on Convulsions), following the modifications listed below, using Jiangshengzhi (Fresh Ginger Juice) and Fengmi (Honey) as guides, decocted and taken orally.
Pediatric cholera (Huoluan) arises suddenly. Its symptoms are characterized by violent turmoil and restlessness without respite. It is mostly caused by food stagnation combined with cold damage (Shanghan), leading to disharmony of yin and yang, resulting in vomiting above and diarrhea below, along with irritability and confusion. If the pathogenic factor is in the upper jiao, it causes vomiting; if in the lower jiao, it causes diarrhea; if in the middle jiao, it causes both vomiting and diarrhea. There are cases where neither vomiting nor diarrhea can occur, known as Dry Cholera (Gan Huoluan), also called Intestinal Colic Sha (Jiaochang Sha). This occurs because the pathogenic factors in the spleen and stomach have no way to exit internally. If accompanied by panting, chest fullness, and convulsions, fewer than one in ten survives. For all cases of vomiting and diarrhea, treatment must distinguish between cold and heat syndromes. At the initial stage, do not drink rice soup, as treating patients whose stomach qi is dominated by pathogenic factors is difficult; instead, Huoxiang Zhengqi San (Agastache Powder to Rectify the Qi) is suitable.
If diarrhea precedes vomiting, it indicates deficiency-cold of the spleen and stomach. Thus, watery stools appear first, vomiting is slight, breath is slow, spirit is lethargic, sweat appears on the forehead, and the six pulses are deep and fine. This is a deficiency-cold syndrome, suitable for warming treatment using Liu Junzi Tang (Six Gentlemen Decoction). If ineffective, use Lizhong Tang (Regulate the Middle Decoction) with added Huoxiang and Mugua (Chaenomelis Fructus), each at one qian.
If vomiting precedes diarrhea, it indicates heat in the spleen and stomach. Thus, there is panting, red lips, foamy vomit, flushed face, thirst for drinking fluids, and a surging and rapid pulse. This is a heat syndrome. Treat with harmonizing methods using Wuling San (Five-Ingredient Powder with Poria) with added Huoxiang.
Among cholera cases, those who cannot vomit above nor defecate below are in the most critical condition. Quickly induce vomiting using salt water. Only after the retained food and accumulated phlegm are expelled should medication be administered. Alternatively, prick the sides of the fingernails to let blood out, or prick Weizhong (BL40) located at the popliteal crease to let blood out, which will provide relief. Afterwards, administer Huoxiang Zhengqi San.
Huoxiang Zhengqi San treats wind-pathogen injuring the stomach, disharmony of yin and yang, causing vomiting and diarrhea.
Zisu (Perillae Folium), Fupi (Tangerine Peel with Septum), Jiegeng (Platycodonis Radix), Fuling (Poria), Faxia (Prepared Pinellia), Zipu (Magnoliae Officinalis Cortex), Baizhi (Angelicae Dahuricae Radix), Guangpi (Citri Reticulatae Pericarpium), Zhigancao (Prepared Licorice Root), equal parts; Shengjiang (Fresh Ginger, three slices), Dazao (Jujube, three fruits); decocted in water and taken orally.
Liu Junzi Tang (Six Gentlemen Decoction) is Si Junzi Tang (Four Gentlemen Decoction) plus Chenpi (Tangerine Peel) and Faxia (Prepared Pinellia); see the chapter on Summerheat Injury.
Lizhong Tang (Regulate the Middle Decoction) is seen in the chapter on Summerheat Injury; add Huoxiang and Mugua, each at two qian.
Modified Wuling San treats summerheat-induced cholera with vomiting and diarrhea.
Jiaozhu (Charred Atractylodes Rhizoma), Fuling (Poria), each at two qian; Zhuling (Polyporus), Zexie (Alismatis Rhizoma), Angui (Cinnamomi Ramulus), Huoxiang (Agastaches Herba), Mugua (Chaenomelis Fructus), Xisha (Amomi Fructus Rotundus), each at one qian; Shengjiang (Fresh Ginger, one slice), Dazao (Jujube, one fruit); Dengxin (Junci Medulla) as a guide.
Salt Water Vomiting Method: Mix table salt with warm water until slightly salty, prepare one large bowl, and have the child drink it. After some time, stimulate the throat with fingers to induce vomiting. Relief comes immediately after one episode of vomiting.
Another prescription uses twenty grains each of Ludou (Mung Bean) and Hujiao (Black Pepper), ground into fine powder, decocted in water and taken orally. If extremely thirsty, grind these two substances finely and mix with fresh well-water to take orally for relief.
Another prescription uses Liuyi San (Six-to-One Powder) mixed with ginger juice water.