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After the recovery from sha disease (a group of acute febrile diseases characterized by skin eruptions) and smallpox, or after recovering from a severe illness, both Qi and Blood are deficient, making the skin thin and tender. If one consumes foods that stir wind, are rich/fresh, are "fa wu" (triggering foods), or are greasy/meaty items, it will aid fire and generate wind. This may transform into zou ma ya gang (gangrenous stomatitis progressing rapidly), wind rash, itching sores, external carbuncles, or leave behind toxic residues. It is common for relapses to occur after recovery when the season coincides with the original onset of sha or smallpox. For nursing infants, it is crucial that the wet nurse strictly observes dietary restrictions.

Children possess fragile and weak constitutions; pathogenic winds ("yin feng") and virulent qi ("li qi") can easily invade and trigger wind rash. Symptoms include high fever, cough, nasal congestion, vomiting, eyes appearing teary, irritability, frequent crying, and the appearance of pinpoint-sized red spots on the body. This is termed wind rash, not sha disease. The treatment method is the same as for sha disease. Some children may experience two episodes in a month, or three to four consecutive episodes. Both the sick child and the wet nurse should avoid triggering foods.

During summer and autumn, damp-heat steams and scorches, infiltrating the body's surface and causing pustular sores (nong ke chuang). The lesions have thin skin with crusts, hollow tops with clear serum, resembling smallpox vesicles, and are prone to rupture and weeping. However, areas where fluid leaks become ulcerated like skinned eels; washing with water causes spreading and difficult-to-treat erosion. Contact with others' skin near the sores also causes swelling and erosion. Treatment is similar to HT pi chuang (likely referring to specific contagious impetigo-like conditions).

Following a severe illness, middle-jiao deficiency leads to the Spleen's failure to control blood. Rootless fire forces blood upward, causing bleeding from the gum margins. The pulse is deficient and wiry. Treatment involves Liuwei Tang (Six-Ingredient Rehmannia Decoction) added with 3 fen of Rougui (Cinnamon Bark) (formula seen later; distinguished by the absence of foul breath) to guide fire downward. Mistakenly using bitter-cold herbs to suppress fire instead causes massive hemorrhage that is incurable. If there is excess fire in the Stomach channel manifesting as foul breath and a rapid, forceful pulse, Xijiao Dihuang Tang (Rhinoceros Horn and Rehmannia Decoction) is appropriate.

Any single prescriptions or toxic drugs that are not commonly used, if mistakenly ingested, cannot be saved. Examples include Banmao (Mylabris), Fanmubie (Strychnos Nux-vomica), Pishuang (Arsenic Trioxide), Xionghuang (Realgar), Mahuang (Leech - note: text says Ma Huang but context implies Leech/Ma Hui or similar, usually Ma Hui in this context of toxicity, but literal is Horse Leech/Water Leech), Shuiyin (Mercury), Naoshan (Ammonium Chloride/Nitre), Hetun (Pufferfish), Badou (Croton Seed), Qingfen (Calomel), Mangcao (Aconite root of other species/Toxic herb), Yapians (Opium). There are many such substances.

There is a type of exterior contraction initially suppressed by cold-natured medicines ("bing fu"), trapping the pathogenic factor inside. This causes restlessness, vomiting, chest fullness, profuse sweating, high fever, thirst preferring hot drinks. Although the tongue coating is yellow, the tongue body underneath is moist. Urine is yellow and red. These are all due to internal disturbance by pathogens. Regardless of whether one week (yi hou) or two to three weeks have passed, it is still appropriate to use light and ascending herbs to lift and expel the pathogen, such as Jiegeng (Platycodon Root), Gegen (Pueraria Root), Shengma (Cimicifuga Rhizome), Sangye (Mulberry Leaf), Sugeng (Perilla Stem), and Xiangfu (Cyperus Rhizome). One or two doses will result in self-healing.