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The gastrointestinal tract of infants and children is fragile, the internal organs are tender and soft, and the blood and qi are not yet robust. Due to taking medicinal substances that they cannot tolerate, the toxicity inherent in the flavors of these medicines causes restlessness, chest oppression, and confusion, or numbness of the mouth and tongue, or sensations like needle pricks. In severe cases, vomiting and diarrhea occur, potentially leading to hematemesis (vomiting blood).

Xuanhusuo San (Corydalis Rhizome Powder)
Resolves various drug toxicities, addressing restlessness, chest oppression, vomiting, diarrhea, and hematemesis.
Corydalis Rhizome (Rhizoma Corydalis Yanhusuo), peeled, 1 liang; Licorice Root (Radix Glycyrrhizae Uralensis), raw; Alum (Alumen), raw, each 0.5 liang.
Grind the above into a fine powder. Take half a qian per dose. Add one small cup of water, decoct until reduced to six-tenths, strain, and let cool to warm before drinking. Sip frequently.

Fancha San (Alum and Tea Powder)
Treats various drug toxicities causing restlessness, numbness of the mouth and tongue, or stinging pain.
Tea Leaves (Caulis et Folium Camelliae Sinensis), 1 liang; Alum (Alumen), 1 liang.
Grind the above into a fine powder. Take half a qian or one qian per dose, mixed with fresh well water. It resolves toxicity immediately.

Another prescription: Resolves hundred types of drug poison. Grind White Hyacinth Bean (Semen Dolichoris Lablabis Albi) into powder, mix with water, and take one or two qian. Alternatively, burn mulberry leaves that have been used for silkworm rearing to ash, grind finely, mix with cold water, take half a qian, and administer frequently.

Longnao San (Borneol Powder)
Treats hematemesis caused by drug toxicity; efficacy is miraculous.
Rhubarb Radix (Radix et Rhizoma Rhei), steamed; Pinellia Tuber (Rhizoma Pinelliae Ternatae), washed seven times with boiling water, sliced thinly, soaked in ginger juice for one day, then dried; Licorice Root (Radix Glycyrrhizae Uralensis), honey-fried; Venus Stone (Lapis Auripigmenti? Note: Context suggests mineral); Silver Star Stone (Mineral); Cold Water Stone (Lapis Calcitae); Yuyuliang (Hematites); Non-ash Wood (Mineral); Green Clam Powder (Concha Meretricis Cyprinae Pulvis, i.e., Indigo Naturalis/Fu Zi Qing Dai), each 0.5 liang.
Grind the above into an extremely fine powder. Mix in one zi amount of finely ground Borneol (Bingpian). Take one zi or half a qian per dose, mixed with fresh water. Qian Yi also prescribed Spikenard Root (Radix Nardostachyos) and Agastache Leaf (Folium Agastaches) powders, one qian each, reducing the Rhubarb dosage by half.

Infantile scalp sores arise from heat within the internal organs rushing upward to the head, compounded externally by wind-dampness. These pathogens interact and obstruct blood and qi, generating sores. Hence, it is called "scalp sore." This condition differs specifically from alopecia barbae-like scurf (tucuang). Tucuang presents with white or red lesions covered by hard crusts all over the head. Scalp sores, however, appear only in one or two localized areas; their crusts are not white, hard, or dry but constantly exude purulent blood and wet fluid. Commonly known as "growing scalp sores," this occurs when infants neglect washing their hair.

Xuanjingshi San (Xuanjing Stone Powder)
Treats infantile scalp sores.
Taiyin Xuanjing Stone (Lapis Aragoniti); Cold Water Stone (Lapis Calcitae), each 1 fen, ground; Calomel (Hydrargyri Chloridum Mite); Musk (Moschus), each a small amount.
Grind the above into a fine powder. First wash off the crusts with weak starch water, dry thoroughly, then mix the medicine with oil and apply topically. For severe cases, no more than two applications are needed.

Gualou San (Trichosanthes Fruit Powder)
Treats as described above.
Trichosanthes Fruit (Fructus Trichosanthis), one fruit; Salted Fermented Soybeans (Semen Sojae Praeparatum), one he, mixed with Trichosanthes flesh and burned to ash, then ground; Soil from under the stove (Cineres Focales), 1 fen; Calomel (Hydrargyri Chloridum Mite), 1 fen.
Grind the above into powder, mix in one zi amount of Musk, and blend evenly. Apply a small amount mixed with oil. If the lesion is moist, apply dry powder directly.

Danshi San (Light-colored Fermented Soybean Powder)
Treats as described above.
Light-colored Fermented Soybeans (Semen Sojae Praeparatum), stir-fried until black and charred; Vitriol (Calcanthitis? Note: Jiangfan refers to roasted alum/vitriol), each 1 liang; Calomel (Hydrargyri Chloridum Mite), 2 qian.
First grind the first two ingredients into powder, then mix with Calomel evenly. First wash the clean sore with hot lye water derived from willow branch ash. Sprinkle Licorice Root powder on the sore, then apply the medicine mixed with raw sesame oil. If moist, apply dry powder.

Huanglian San (Coptis Powder)
Treats as described above. Coptis Rhizome (Rhizoma Coptidis), de-rhizome, 2 liang; Lead White (Cerussa), 1 liang. Grind into fine powder. Wash off crusts first, dry, and apply. It heals quickly. Recurrence should be treated with previous prescriptions.

Hufen Gao (Lead White Ointment)
Treats chronic scalp sores persisting for years.
Pine Resin (Resina Pini); Sophora Root (Radix Sophorae Flavescentis); Coptis Rhizome (Rhizoma Coptidis), de-rhizome, each 1.5 liang; Rhubarb Radix (Radix et Rhizoma Rhei), raw; Lead White (Cerussa), 1 liang; Scutellaria Root (Radix Scutellariae Baicalensis); Mercury (Hydrargyrum), each 1.1 liang; Alum (Alumen), 0.5 liang; Cnidium Fruit (Fructus Cnidii), 3 fen.
Grind the above into fine powder. Mix with pig fat rendered in the twelfth lunar month, grinding until mercury stars are no longer visible. Apply to the lesion.

Another prescription: Treats chronic scalp sores.
Calomel (Hydrargyri Chloridum Mite), a small amount; Walnut Kernel (Semen Juglandis), with skin, roasted over a lamp retaining its nature, covered with a bowl to remove fire toxicity, then ground.
Grind into powder, mix with raw sesame oil, and apply. Shave the hair beneath the sore before application. Healing occurs in one or two applications.

Another prescription: Treats as above. Use dust from roof beams mixed with oil sediment for application. First wash with soap pod (Gleditsia Sinensis) decoction, then apply medicine. Burn horse bones to ash, grind, mix with vinegar, and apply. Apply solidified tiger fat three to four times daily. Mix Polygonum orientale powder with honey and apply; healing occurs with expulsion of parasites, leaving no scar.

Another prescription: Take seven chicken eggs, remove whites and shells, simmer in a copper vessel, and mix with oil for topical application. Also treats dry alopecia without exudate. Burn eggshells to ash, grind, mix with pig fat, and apply.

Another prescription: Grind chicken manure into powder and apply. Wash crusts with a little vinegar and clean water, then rinse with warm water and dry. Mix Bai Cao Shuang (soot) with Calomel, grind finely, mix with a little raw sesame oil, and apply. Wash with Dodder Seed (Semen Cuscutae) decoction. Burn bamboo leaves to ash, grind, mix with pig fat, and apply. Stir-fry black beans until smoke ceases, pound into powder, mix with Calomel, grind finely, mix with raw sesame oil, and apply. Used for scalp sores with pus and fluid that fail to heal or recur after healing.

Burn one hundred almond kernels to ash, mix with one fen of Calomel, grind uniformly, mix with raw sesame oil, and apply.

For scalp sores spreading gradually with no effect from other treatments: Chew black sesame oil and apply. Also treats impetigo and dry sores.

For malignant sores on the head: Wrap fermented soybeans in yellow mud and bake until cooked. Cool, remove beans, grind to powder, mix with pure vegetable oil, and apply.