《圣惠》夫肺气通于鼻，鼻者肺之候，若小儿乳食不调，上焦壅滞，令疳虫上蚀
于鼻也。其候鼻中赤痒，壮热多啼，皮毛干焦，肌肤消瘦，咳嗽上气，下痢无常，
鼻下连唇生疮赤烂，故曰鼻疳也。
治小儿鼻下赤烂，心烦躁，鼻中生疮，渐渐转多及身上，焦躁、日夜疼痛，急治之方
诃子（二个） 豆蔻（三个） 黄连（六分） 防风（半两） 朱砂（一分）
上为末，饭丸麻子大。每服荆芥汤下三丸。
〔汤氏〕五福化毒丹 治 鼻，清膈凉血。
玄参 桔梗（去芦，各一两） 赤茯苓 人参 马牙硝 青黛 甘草（各一分） 麝香（五分） 一方有龙脑（五
分）
上除麝香、牙硝另研，一处为末，次和青黛等，炼蜜丸，如芡实大，金银箔
为衣。薄荷汤化下。疮疹余毒，磨生犀角水下。上焦热壅口齿、鲜血宣露臭气，
用生地黄汁化下。食后。
泽泻散 治小儿肺积，鼻内生疮及鼻下赤烂。
川泽泻 川郁金（生） 甘草（炙） 山栀子仁（炒。各一分）
上为末。每服，婴孩一字，二三岁半钱，五七岁一钱，甘草汤调下，一日二服。
宜再用青金散敷之。
枇杷叶散自制 治鼻疳赤烂。
枇杷叶（去毛，阴干，一两） 山栀子（半两） 百部 槟榔（各二钱半）
上为细末。每服三钱，儿小者二钱，更小一钱，白汤调下。
田氏治法，先用甘草、白矾汤洗净，后掺芦荟、黄连、黄柏末，日三敷。一方，
用米泔洗，黄连末敷，日三四次，亦佳。
青金散
铜青 白矾（生。各一钱）
上为末。每用少许，敷鼻下。
〔钱乙〕兰香散
兰香叶（菜名，烧灰，二钱） 铜青（半钱） 轻粉（二字）
上为细末令匀，看疮大小干贴之。
〔张涣〕石胆散 治鼻疳病，疳虫上蚀于鼻赤痒，及连唇生疮赤烂。
石胆（一两） 地龙（一分，洗净） 头发（烧灰） 莨菪子（生用。各半两）
上件捣罗为细末，入麝香一钱同研匀。每服一字，贴于疮上。
《吉氏家传》治鼻下赤烂疳方
青黛（一钱） 麝香（少许） 熊胆（末，半钱）
上末。睡时贴少许在鼻下。
《朱氏家传》治小儿鼻下湿痒疳疮方
上用大枣一枚去核，以白矾一块纳枣中，文武火 存性，细研。涂疮，如疮干，以麻油调涂。
《圣惠》吹鼻蝉壳散 治小儿鼻疳痒
蝉壳（微炒） 青黛（细研） 蛇蜕皮（灰） 滑石 麝香（细研。各等分）
上件药捣，细罗为散，都研令匀。每用绿豆大吹入鼻中。日三用之，疳虫尽出。
钱氏白粉散 治诸疮。
乌贼鱼骨末（三匕） 白芨末（二匕） 轻粉（一匕）
上末。先用清浆水洗拭过贴之。
According to the *Taiping Shenghui Fang*, Lung Qi connects with the nose, and the nose is the external manifestation of the Lung. If an infant's diet of milk and food is irregular, causing stagnation in the Upper Jiao (Upper Burner), it leads to "Gan" insects (parasites associated with malnutrition) ascending to erode the nasal cavity. The symptoms include redness and itching in the nose, high fever with excessive crying, dry and scorched hair and skin, emaciation, coughing with rebellious Qi, irregular diarrhea, and sores with redness and ulceration extending from under the nose to the lips; hence it is called "Bi Gan" (Nasal Gan).
Formula for urgently treating infants with redness and ulceration under the nose, irritability, sores in the nose that gradually spread over the body, restlessness, and day-and-night pain:
*Hezi* (Two fruits) *Doudou* (Three seeds) *Huanglian* (Six fen) *Fangfeng* (Half liang) *Zhusha* (One fen)
Grind the above ingredients into powder, form pills the size of hemp seeds using rice paste. Administer three pills per dose, washed down with *Jingjie* Decoction.
*[Tang Shi]* Wufu Huadu Dan: Treats nasal Gan sores; clears the diaphragm and cools the blood.
*Xuanshen* *Jiegeng* (remove rhizome, each one liang) *Chifuling* *Renshen* *Mayaxiao* *Qingdai* *Gancao* (each one fen) *Shexiang* (Five fen); another version adds *Longnao* (Five fen).
Except for *Shexiang* and *Mayaxiao* which are ground separately, grind the remaining ingredients together into a fine powder, then mix with *Qingdai* etc., and bind with refined honey to form pills the size of Chinese chestnut (*Qianshi*), coated with gold and silver foil. Dissolve and administer with *Bohe* Decoction. For residual toxins from exanthematous diseases, grind fresh *Xijiaojiao* (Rhino Horn) and take with water. For heat stagnation in the Upper Jiao causing bleeding gums, exposed teeth, and foul odor, dissolve and administer with juice of *Shengdihuang*. Take after meals.
*Zexie San*: Treats infant lung accumulation, sores inside the nose, and redness/ulceration under the nose.
*Chuan Zexie* *Chuan Yujin* (raw) *Gancao* (honey-fried) *Shanzhizi Ren* (stir-fried, each one fen).
Grind the above into powder. Dosage: one "yi" character measure for infants, half "qian" for ages 2-3, one "qian" for ages 5-7; mix with *Gancao* Decoction and administer. Twice daily. It is advisable to additionally apply *Qingjin San* externally.
*Pipaye San* (Self-made): Treats Bi Gan with redness and ulceration.
*Pipaye* (remove hairs, shade-dry, one liang) *Shanzhizi* (Half liang) *Bai* *Binglang* (each two qian and half).
Grind into fine powder. Dosage: three "qian" per dose, two "qian" for small children, one "qian" for very small children; mix with warm water and administer.
*Tian Shi*'s treatment method: First wash the area with a decoction of *Gancao* and *Baifan*, then dust with powders of *Luhui*, *Huanglian*, and *Huangbai*, applying three times daily. Another method: wash with rice washing water, apply *Huanglian* powder, three to four times daily, which is also effective.
*Qingjin San*
*Tongqing* *Baifan* (raw, each one qian).
Grind into powder. Apply a small amount to under the nose each time.
*[Qian Yi]* Lanxiang San
*Lanxiang Ye* (vegetable name, burnt to ash, two qian) *Tongqing* (Half qian) *Qingfen* (Two zi).
Grind into a uniform fine powder. Apply directly as a dry powder according to the size of the sore.
*[Zhang Huan]* Shidan San: Treats Bi Gan disease, where Gan insects ascend to erode the nose causing redness and itching, and extend to the lips causing redness and ulceration.
*Shidan* (One liang) *Dilong* (One fen, washed clean) *Toufa* (burnt to ash) *Langdang Zi* (raw use, each half liang).
Pulverize the above ingredients into a fine powder, add one "qian" of *Shexiang* and grind uniformly. Apply one "yi" character measure to the sore each time.
*Ji Shi Jiachuan* Formula for treating redness and ulceration of Bi Gan under the nose:
*Qingdai* (One qian) *Shexiang* (A little) *Xiongdan* (powder, half qian).
Grind into powder. Apply a small amount to under the nose before sleep.
*Zhu Shi Jiachuan* Formula for treating damp, itchy Gan sores under the nose in infants:
Take one date, remove the pit, insert a piece of *Baifan* into the date, calcine over mild-to-strong fire until the substance remains (preserve nature), then grind finely. Apply to the sore; if the sore is dry, mix with sesame oil for application.
*Taiping Shenghui Fang* Chuibi Chanke San: Treats infant nasal Gan itching.
*Chanke* (lightly stir-fried) *Qingdai* (finely ground) *Shetuipi* (ash) *Huashi* *Shexiang* (finely ground, equal parts).
Pound the above herbs, sieve into a fine powder, and grind thoroughly to mix evenly. Blow in an amount the size of a mung bean into the nose each time. Use three times daily; this expels all Gan insects.
Qian Shi Baifen San: Treats various sores.
*Wzeiyu Gu Mo* (Three bi) *Baiji Mo* (Two bi) *Qingfen* (One bi).
Grind into powder. First wash and wipe with clear fermented grain liquid, then apply.