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Pediatric Fei Gan (a syndrome of malnutrition in children due to improper diet), caused by excessive eating, combined with disharmony of cold and heat. Raw, cold, greasy, and oily foods damage the Spleen and Stomach, while sugar, wheat products, and fried or roasted foods assist internal fire. If neglected over time, accumulation gradually brews into Gan disease (pediatric malnutrition syndrome).

Symptoms include thirst with easy hunger, a good appetite but emaciation, upright hair, diarrhea, abdominal distension, and dry nose. If left untreated for a long time, it leads to weak Spleen and strong Liver. With the source of transformation (Spleen-Stomach metabolic origin) cut off, Kidney Yin naturally depletes, and Liver Wood loses nourishment. Liver Fire burns its own orifices, resulting in eye diseases (Gan eyes), often forming pterygium-like membranes, eyelids closing tightly, and discharge resembling paste. This is caused by weakness in the Middle Jiao preventing Clear Yang from ascending, and excess Liver Fire preventing Turbid Yin from descending. Treatment should raise the Clear and descend the Turbid. Use Baizhu (Atractylodis Macrocephalae Rhizoma) and Renshen (Ginseng Radix et Rhizoma) to first tonify the Spleen and Stomach as Sovereign herbs; Chaihu (Bupleuri Radix) and Zhike (Aurantii Fructus Immaturus) to soothe the Liver and regulate Qi as Minister herbs; Cangzhu (Atractylodis Rhizoma) and Fuling (Poria) and Zexie (Alismatis Rhizoma) to leach out dampness and descend turbidity as Assistant herbs; Qianghuo (Notopterygii Rhizoma et Radix), Manjingzi (Viticis Semen), Shengma (Cimicifugae Rhizoma), Chuanxiong (Ligustici Chuanxiong Rhizoma), and Bohe (Menthae Haplocalycis Herba), various wind-dispelling herbs, which both disperse wind-fire and utilize their ascending nature as Envoy herbs. In this way, both Gan disease and eye ailments will achieve efficacy.

Ba disease (also known as Ai Ru disease) occurs when a child approaching one year of age drinks the mother's "Ba milk" (lactation during pregnancy) after the mother becomes pregnant again, leading to this condition. Alternatively, if the mother suffers from other illnesses and the child drinks her milk, the child may contract symptoms similar to the mother's illness. Generally, if the mother's blood and Qi are harmonious, the milk nourishes; if the mother's spirit, blood, and Qi are diseased, the milk generates other diseases. When pregnant, the essence descends to nourish the fetus; Qi stagnates and transforms into heat, while Blood stasis transforms into evil. The child's divine Qi is not yet complete and is easily affected. Symptoms include alternating chills and fever, mild diarrhea, dry hair, distinct unhappiness, sallow complexion, abdominal distension with visible blue veins, green diarrhea with frequent vomiting, progressive emaciation, refusal of milk and food, eventually resembling Gan syndrome. Another view suggests that conception conditions—such as extreme excess or deficiency, irregular eating, labor, extreme heat or cold, wind, rain, thunder, lightning, or imbalance of Yin and Yang, or violating taboos—can also cause this. This condition is colloquially called "Tai Du" (Fetal Jealousy), believing that the fetus in the womb, jealous of the child drinking milk, causes the illness through its soul/spirit recognition.

Gu Zheng (bone-steaming fever) usually originates from the Foot-Yangming Stomach Meridian. Initially, fire rushes upward allowing eating, and fire consumes causing hunger. Since the Stomach is the sea of Qi and Blood, insufficient Qi and Blood allow pathogenic fire to digest food rapidly without absorption. Water and grain essences fail to replenish, gradually leading to foul breath, irritability, night fever and morning coolness, scorched hair and thirst, shortness of breath, and night sweats. The body becomes emaciated like a standing crane, termed Xiao Dan (wasting-thirst). If there are more than ten bowel movements daily, thin limbs and large abdomen, frequent eating but constant hunger, it is called Shi Bing (food accumulation). If treatment remains unadjusted, pathogenic fire persists, transmitting and affecting each other, consuming essence and nourishment, distressing the Five Zang organs. Transmission to the Liver causes anger and fear, cheek pain, and tendon spasms, worsening at Mao-You hours (5-7 AM, 5-7 PM). Transmission to the Spleen causes mental fatigue, muscle swelling, cold feet, and borborygmus, worsening at Chen-Xu-Chou-Wei hours (7-9 AM, 7-9 PM, 1-3 AM, 1-3 PM). Transmission to the Lung causes cough, reverse Qi, chest fullness, back soreness, and aversion to cold, worsening in the afternoon. Transmission to the Heart causes five-palm burning, bright red lips, and bitter taste, worsening at Wu hour (11 AM-1 PM). Transmission to the Kidney causes worms eating the spinal marrow, exposed skeletal structure, worsening during Yin phases (night or Yin-dominant times). All these are harms of pathogenic fire consuming essence and blood. For older children whose emotional desires open and damage essence and blood, resulting in Gu Zheng, this is due to essence depletion and injury. One must seek the root in essence and blood.