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Dr. Xue treated a pediatric patient who, whenever his diet was irregular or he was startled by external stimuli, would experience vomiting, diarrhea, and convulsions. He recovered after taking medicines for calming fright and resolving phlegm. Later, the convulsions worsened, and he could not eat; even decoctions containing Ginseng Radix (Renshen) and Atractylodis Macrocephalae Rhizoma (Baizhu) caused immediate vomiting upon ingestion. I used Rhizoma Atractylodis Macrocephalae (Baizhu) stir-fried with kitchen earth until yellow, boiled it in rice-washing water for a few minutes, and administered half a spoonful at intervals. The child still vomited. On the second day, slight vomiting occurred. On the third day, only the urge to vomit remained. Thereafter, each dose of two or three spoonfuls was gradually increased to half a cup without causing vomiting, after which a concentrated decoction was taken, leading to recovery.

One case involved a child with diarrhea characterized by hot, red stools and scanty, difficult urination, indicating heat accumulation internally. Initially, Siling San (Four-Ingredient Powder) added with stir-fried Coptidis Rhizoma (Huanglian) was administered for one dose, resulting in an immediate reduction of heat. Subsequently, Qiwei Baizhu San (Seven-Ingredient Atractylodes Macrocephala Powder) with the removal of Aucklandiae Radix (Muxiang) was given for two doses, stopping the heat and thirst abruptly. Finally, Sijunzi Tang (Four-Gentlemen Decoction) combined with Cimicifugae Rhizoma (Shengma) was used for regulation, leading to full recovery.

Another case involved a nine-year-old child who developed diarrhea after consuming roasted and fried foods and drinking cold liquids during the diarrheal episode. Various medications were ineffective, resulting in emaciation and poor appetite. I used Liangdang Huanglian (Coptidis Rhizoma, Huanglian) one liang, mixed with wine and stir-fried until charred, then ground into powder. Four liang of Ginseng Radix (Renshen) powder was added, and the mixture was formed into pills the size of adzuki beans using congee. Each dose consisted of 40–50 pills, taken at any time with plain warm water. Gradual improvement followed. Then, Wuwei Yigong San (Five-Ingredient Extraordinary Efficacy Powder) with added Cimicifugae Rhizoma (Shengma) was administered for over a month, leading to recovery. Later, due to lack of dietary restraint regarding rich flavors, the child developed Gji syndrome (malnutrition syndrome), with emaciation, reduced food intake, fever, and thirst. Dalu Cang Wan (Large Reed and Cangzhu Pill) was used as the primary formula, assisted by Siwei Fei'er Wan (Four-Ingredient Child-Nourishing Pill), leading to the gradual subsidence of the Gji symptoms. Subsequently, Siwei Fei'er Wan became the primary formula, assisted by Wuwei Yigong San, resulting in recovery. Again, due to inability to restrain rich food intake, diarrhea ensued with consumption of cold drinks; treatment with Fei'er Wan and Yigong San led to recovery.

Pediatric Huoluan (cholera-like disorder) with vomiting and diarrhea is invariably caused by cold-cold damaging the stomach, seasonal dampness, or improper diet. However, this differs slightly from the simultaneous occurrence of vomiting and diarrhea discussed previously. Huoluan is sudden and severe, whereas vomiting and diarrhea are gradual and mild. Huoluan results from injury occurring instantaneously, while vomiting and diarrhea involve progressive damage. If acute Huoluan presents with an uncleaned stomach gate and persistent chest/abdominal fullness, Hewei Yin (Harmonize the Stomach Drink), Lingzhu Erchen Jian (Poria and Atractylodes Macrocephala and Two-Aged Decoction), Da Zhonghe Yin (Major Harmonizing Middle Drink), Xiao Zhonghe Yin (Minor Harmonizing Middle Drink), Xiao Liqing Yin (Minor Clearing Drink), or Shenxiang San (Aromatic Sandalwood Powder) should be used primarily. Once the stomach gate stabilizes, Wuwei Yigong San (Five-Ingredient Extraordinary Efficacy Powder), Wenwei Yin (Warm the Stomach Drink), or Wuling San (Five-Ingredient Powder for Promoting Urination) should be used for tonification and regulation. If Huoluan begins with fatigue and qi deficiency, but without gastric distension or stagnation, it indicates injury to stomach qi, requiring immediate warming and tonification such as Yangzhong Jian (Nourish the Center Decoction) or Wenwei Yin (Warm the Stomach Drink); clearing and draining methods should not be applied indiscriminately.