论曰小儿风瘙瘾疹者，由风邪客于腠理，搏于营卫，传而为热。熏散肌肉，溢于皮肤，
变生瘾疹，状如 ，乍瘥乍发，痒瘙不时，搔之血出，其痒不已，故名风瘙瘾疹赤疹者热，
白疹者寒，治法不可不察。
治小儿肺风瘙痒，瘾疹疥癣。五参散方
人参 紫参 白附子（炮裂各二分） 栝蒌根（锉） 天麻（各半两） 玄参（锉） 沙
麻（锉
各一两） 丹参（三分）
上八味，同捣为散，五十日至百日儿，每服一字，二百日至一岁儿，每服一字半，奶汁
调下。二岁至三岁，每服半钱匕，煎薄荷金银汤，或枣汤调下，空心午后各一服，如乳母服，
每服一钱匕，温酒调下。
治小儿风疹，壮热心躁。黄 汤方
黄 （锉） 白藓皮（锉） 防风（去叉各一分） 枳壳（去瓤麸炒一升） 黄芩（去
黑心） 甘
草（炙各一分）
上六味，粗捣筛，每服一钱匕，水一盏，煎至五分，去滓温服，食后临卧各一。
治小儿瘾疹风痒。防风汤方
防风（去叉） 白茯苓（去黑皮） 升麻 贝母（去心） 蒺藜子（炒去角） 大黄（锉
炒） 甘
草（炙锉各一分）
上七味，粗捣筛，每服一钱匕，水七分，煎至四分，去滓温服，食后，日二。
治小儿风疹，皮肤肿。枳实汤方
枳实（去瓤炒黄两片） 芍药（一分）
上二味，粗捣筛，每服一钱匕，水半盏，煎至三分，去滓入清酒半合，更煎三五沸。分
温二服，空心午间晚后各一，更量大小加减。
治小儿风疹，石楠汤方
石楠叶（一把） 蜀椒（去目及闭口者炒出汗半两）
上二味，以水二盏，煎取一盏半，去滓下硝石白矾各半两，搅令消，以绵 涂于疹处，
干即易。
治小儿瘾疹。莽草汤方
莽草 防风（去叉） 附子（炮裂去皮脐） 牡蛎（ 过各一两）
上四味，粗捣筛，以水一斗，煮取七升，去滓适寒温浴，避风。
治小儿风疹出不止。涂敷方
白矾（熬令汁枯）
上一味，研为末，酒调，用鸡翎扫涂疹上。
又方
景天（一两一分慎火草是也） 蓝（三两）
上二味，同捣研，绞取汁，以热手摩涂之，日再。
治小儿风疹，壮热心躁。犀角汤方
犀角（镑） 升麻 麦门冬（去心焙） 蒺藜子（炒去角） 甘草（炙各一分）
上五味， 咀如麻豆大，每服二钱匕，水一盏，煎至五分，去滓食后温服，更量岁数加
减。
It is stated that infantile wind-induced pruritic urticaria (Feng Sao Yin Zhen) arises from wind pathogenic factors invading the Cou Li (skin texture and pores), struggling with Ying Wei (Nutritive and Defensive Qi), and transforming into heat. The heat steams and scatters within the muscles, overflows onto the skin, and transforms into urticaria. The presentation involves rashes appearing and disappearing intermittently, itching occurring at irregular intervals, bleeding upon scratching, and unceasing pruritus; hence it is named "wind-induced pruritic urticaria." Red rashes indicate Heat syndrome, while white rashes indicate Cold syndrome; therefore, therapeutic principles must be carefully examined.
Formula of Five Shen (Wu Shen San) for treating infantile lung-wind pruritus, urticaria, and tinea:
Ren Shen (Ginseng Radix et Rhizoma), Zi Shen (Stemona Radix), Bai Fu Zi (Aconiti Kusnezoffii Radix Praeparata, prepared until cracked, 2 fen each), Gua Lou Gen (Trichosanthis Radix, crushed), Tian Ma (Gastrodiae Rhizoma, 0.5 liang each), Xuan Shen (Scrophulariae Radix, crushed), Sha Shen (Glehniae Radix or Adenophorae Radix, crushed, 1 liang each), Dan Shen (Salviae Miltiorrhizae Radix, 3 fen).
The above eight herbs are pounded together and sieved to make a powder. For infants aged 50 to 100 days, administer one "zi" dose per time; for toddlers aged 200 days to one year, administer one and a half "zi" doses per time, mixed with milk juice. For children aged two to three years, administer half a "qian bi" dose per time, mixed with decocted Bo He Jin Yin Tang (Mint and Honeysuckle Decoction) or Jujube Decoction, taken on an empty stomach and in the afternoon. If the nursing mother takes it, administer one "qian bi" dose per time, mixed with warm wine.
Huang Qi Tang (Astragalus Decoction) for treating infantile wind-rash accompanied by high fever and mental restlessness:
Huang Qi (Astragali Radix, crushed), Bai Xian Pi (Dictamni Cortex, crushed), Fang Feng (Saposhnikoviae Radix, de-ramified, 1 fen each), Zhi Ke (Aurantii Fructus, pith removed, stir-fried with bran, 1 sheng), Huang Qin (Scutellariae Radix, black heart removed), Gan Cao (Licorice Radix et Rhizoma, honey-fried, 1 fen each).
The above six herbs are coarsely pounded and sieved. Administer one "qian bi" dose per time, add one zhan of water, decoct until five fen remains, remove the dregs, and take warm. Take once after meals and once before bedtime.
Fang Feng Tang (Saposhnikoviae Decoction) for treating infantile urticaria and wind-pruritus:
Fang Feng (Saposhnikoviae Radix, de-ramified), Bai Fu Ling (Poria, black skin removed), Sheng Ma (Cimicifugae Rhizoma), Bei Mu (Fritillariae Bulbus, heart removed), Ji Li Zi (Tribuli Fructus, stir-fried and thorns removed), Da Huang (Rhei Radix et Rhizoma, crushed and stir-fried), Gan Cao (Licorice Radix et Rhizoma, honey-fried and crushed, 1 fen each).
The above seven herbs are coarsely pounded and sieved. Administer one "qian bi" dose per time, add seven fen of water, decoct until four fen remains, remove the dregs, and take warm. Take after meals, twice daily.
Zhi Shi Tang (Immature Bitter Orange Decoction) for treating infantile wind-rash with skin swelling:
Zhi Shi (Aurantii Fructus Immaturus, pith removed, stir-fried until slightly yellow, two slices), Shao Yao (Paeoniae Radix, 1 fen).
The above two herbs are coarsely pounded and sieved. Administer one "qian bi" dose per time, add half a zhan of water, decoct until three fen remains, remove the dregs, add half he of clear wine, and boil for three to five boils. Divide into two warm doses, taken on an empty stomach, at noon, and in the evening. Adjust dosage according to age and size.
Shi Nan Tang (Kalmia Leaf Decoction) for treating infantile wind-rash:
Shi Nan Ye (Kalmiae Folium, one bundle), Shu Jiao (Zanthoxyli Pericarpium, remove eyes and closed ones, stir-fried until oil appears, 0.5 liang).
The above two herbs are decocted in two zhan of water until one and a half zhan remains. Remove the dregs, add Shi Xiao (Natrii Nitras) and Bai Fan (Alumen), each 0.5 liang, stir to dissolve, and apply to the rash area with cotton. Change when dry.
Mang Cao Tang (Dichroa Decoction) for treating infantile urticaria:
Mang Cao (Dichroae Radix), Fang Feng (Saposhnikoviae Radix, de-ramified), Fu Zi (Aconiti Lateralis Radix Praeparata, prepared until cracked, skin and umbilicus removed), Mu Li (Ostreae Concha, calcined, 1 liang each).
The above four herbs are coarsely pounded and sieved. Decoct in one dou of water until seven sheng remain. Remove the dregs, adjust temperature to suitability, and bathe. Avoid wind.
External Application Formula for treating incessant infantile wind-rash:
Bai Fan (Alumen, boiled until juice is dry).
The above single herb is ground into fine powder, mixed with wine, and swept onto the rash using a chicken feather.
Another Formula:
Jing Tian (Portulacae Herba, 1 liang 1 fen, also known as Shen Huo Cao), Lan (Indigo Naturalis or Isatidis Radix, 3 liang).
The above two herbs are pounded and ground together, juice is extracted by pressing, and applied by rubbing with warm hands. Apply twice daily.
Xi Jiao Tang (Rhino Horn Decoction) for treating infantile wind-rash accompanied by high fever and mental restlessness:
Xi Jiao (Rhinocerotis Cornu, shaved), Sheng Ma (Cimicifugae Rhizoma), Mai Men Dong (Ophiopogonis Radix, heart removed and baked), Ji Li Zi (Tribuli Fructus, stir-fried and thorns removed), Gan Cao (Licorice Radix et Rhizoma, honey-fried, 1 fen each).
The above five herbs are cut into pieces the size of hemp seeds. Administer two "qian bi" doses per time, add one zhan of water, decoct until five fen remains, remove the dregs, and take warm after meals. Adjust dosage according to the child's age.