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Pediatric *gan* (malnutrition syndrome due to improper feeding and spleen-stomach dysfunction) is analogous to the "five labors" (chronic deficiency syndromes) in adults. Although medical texts classify it according to the five Zang organs, this condition is more prevalent in summer. Its root lies indeed in the Spleen and Stomach. This is because children consume mixed milk and food, and their digestive transformation capacity is insufficient. After weaning, if they ingest fruits and fish/meat indiscriminately, Qi injury and food stagnation accumulate, causing heat to steam internally. Manifestations include emaciated muscles, distended abdomen, and thin limbs; this symptom complex is named "Ding Xi" (a specific type of severe pediatric malnutrition). Some infants have a good appetite, others lack appetite, some drink excessively due to thirst, and others pass white loose stools. If the disease lingers without resolution, it often leads to critical and dangerous conditions. Dietary restrictions should include avoiding raw, cold, fishy, greasy, and hard-to-digest foods. The initial treatment method involves clearing heat, harmonizing the middle Jiao, and separating turbidity from clear fluids. Subsequently, one should soothe Qi tonification assisted by promoting digestion. There are often secondary illnesses; if treatment fails, sometimes the condition may resolve spontaneously after the mother gives birth (Note: This phrase likely refers to a specific contextual or folk remedy context within the original text).

For cholera-like vomiting and diarrhea occurring in summer, Huoxiang Zhengqi San (Agastache Powder for Regulating the Qi and Correcting the Turbidity) is generally used.

For watery diarrhea, separation of turbidity is indicated. Si Ling San (Four-Poria Decoction) is used. For cold patterns, add Sheng Jiang (Zingiberis Rhizoma Recens) and Rou Gui (Cinnamomi Cortex); for heat patterns, use Huang Qin (Scutellariae Radix) and Lian Lian (Coptidis Rhizoma).

For abdominal pain, soothing Qi is appropriate. Tiao Qi (regulating Qi) can use Mu Xiang (Aucklandiae Radix) and Qing Pi (Citri Reticulatae Pericarpium Viride). If there is stagnation, add Chao Zha Rou (Fried Crataegi Fructus) and Hou Po (Magnoliae Officinalis Cortex); for severe cases, add Lai Fu Zi (Raphani Semen) and Bing Lang (Arecae Semen).

For abdominal pain with heat signs, use Huang Qin (Scutellariae Radix), Bai Shao (Paeoniae Radix Alba), and Zhi Shi (Aurantii Fructus Immaturus). For cold signs, use Cao Guo (Tsaoko Fructus), Sha Ren (Amomi Fructus Rotundus), and Wu Zhu Yu (Evodiae Fructus).

After vomiting and diarrhea, if the patient can eat and stool becomes constipated, it indicates recovery. If the patient cannot eat, shows spirit fatigue, and sallow complexion, one must guard against slow convulsions (*man jing*). The treatment method should regulate the middle and warm the center. If there is residual heat with irritability and thirst, sweet-cold or sweet-sour methods should be used to rescue body fluids. Therefore, the sour nature of Mu Gua (Chaenomelis Fructus) makes it an essential herb for general summerheat-resolving preparations.

In spring, sudden warmth followed by cold causes the body to first contract warm pathogens, then be constrained by cold. Cough with phlegm and wheezing are most common. When using acrid-releasing methods, avoid warm-hot herbs; use only one dose. Absolute fasting is prohibited. If the condition is severe, hold the infant upright day and night, avoiding inversion, for three to four days. Mild cases present as cough; severe cases as wheezing. In acute wheezing, nasal flaring and chest retraction occur.

Spring-warmth diseases are mostly caused by latent pathogens from winter, detailed in adult medical texts. Pediatrics also has latent pathogens, and treatment follows adult principles. However, acute external contraction is more common in children, presenting with headache, aversion to cold, fever, rapid breathing, nasal congestion, heavy body, floating pulse, and absence of sweating. These can originally be treated with diaphoresis. Since spring climate is mild and舒展 (expansive), acrid-warm releasing herbs should be used sparingly. Yang-meridian exterior-releasing herbs are strictly forbidden from chaotic use. As for symptoms of fever, cough, wheezing, and phlegm, only lung-meridian herbs for acrid release are suitable. Xie Bai San (Drain White Powder) is used, added with Qian Hu (Peucedani Radix), Niu Bang Zi (Arctii Fructus), and Bo He (Menthae Haplocalycis Herba). Digestion-promoting herbs should be limited to one or two types. If both urine and stool are unobstructed, digestion-promoting herbs should be used sparingly. One must differentiate between exterior/interior and upper/middle/lower Jiao to determine which aspect is urgent for treatment.

In spring, when it is warm, wind-warmth diseases are very common. Warm pathogens transform into heat rapidly. If one uses diaphoresis for wind-cold or digestion-promoting methods, it will deplete body fluids, and pathological changes occur even faster.

At the onset, with cough and rapid breathing, the following are commonly used:
Bo He (Menthae Haplocalycis Herba) (avoid if sweating is profuse), Lian Qiao (Forsythiae Fructus), Xiang Bei (Fritillariae Thunbergii Bulbus), Niu Bang Zi (Arctii Fructus), Hua Fen (Trichosanthis Radix), Jie Geng (Platycodonis Radix), Sha Shen (Glehniae Radix), Mu Tong (Akebiae Caulis), Zhi Ke (Aurantii Fructus), Ju Hong (Citri Reticulatae Pericarpium), Sang Pi (Mori Cortex), Gan Cao (Glycyrrhizae Radix et Rhizoma), Shan Zhi (Gardeniae Fructus) (avoid if diarrhea), Su Zi (Perillae Fructus) (avoid Qi-descending action if diarrhea).

If the exterior is resolved but heat remains unclear, use:
Huang Qin (Scutellariae Radix), Lian Qiao (Forsythiae Fructus), Sang Pi (Mori Cortex), Hua Fen (Trichosanthis Radix), Di Gu Pi (Lycii Cortex), Chuan Bei (Fritillariae Cirrhosae Bulbus), Zhi Mu (Anemarrhenae Rhizoma), Shan Zhi (Gardeniae Fructus).

If interior heat is not cleared, characterized by coolness in the morning and fever in the evening, one should clear and resolve blood-level heat. Prolonged cases require nourishing yin and clearing heat. If heat collapses into the pericardium causing coma, with rising phlegm and wheezing, urgently use Niu Huang Wan (Calculus Bovis Pill) or Zhi Bao Dan (Precious Treasure Elixir).

Commentary: Wind-warmth is a disease where the Lung first contracts the pathogen, which then reversely transmits to the Pericardium. Treatment focuses on the Upper Jiao and differs from methods that clear the Stomach and purge accumulation. Pediatricians in my hometown, encountering this, initially prescribe diaphoretic and digestion-promoting herbs. When ineffective, they switch to Chai Hu (Bupleuri Radix), Huang Qin (Scutellariae Radix), Gua Lou (Trichosanthis Fructus), Zhi Shi (Aurantii Fructus Immaturus), and Chuan Lian (Meliae Cortex - *Note: Text says Chuan Lian but usually implies Chuan Lian Zi or similar, here likely referring to a formula component like Huang Lian based on context 'Chuan Lian' might be a typo for 'Chuan Lian Zi' or just 'Huang Lian' mentioned later? Actually text says 'Chai Qin Gua Zhi Chuan Lian', likely Chai Hu, Huang Qin, Gua Lou, Zhi Shi, Chuan Lian Zi/Huang Lian*). Then they attempt purgation, which also fails, leading to critical danger. This is all due to ignorance of hand-meridian (Lung) pathology.

If cold-phlegm obstruction occurs, presenting with wheezing, shortness of breath, and elevated chest, the previous methods are contraindicated. Use San Bai (Three Whites - *likely referring to a specific emetic formula involving Bai Fan, etc.*) to induce vomiting, or Miao Xiang Wan (Miraculous Incense Pill).