《金匮》论曰∶热在上焦者，因咳为肺痿。得之或从汗出，或从呕吐，或从消渴，小便利
数，或从便难，又被快药下利，重亡津液。故寸口脉数，其人咳，口中有浊唾涎沫者，为肺痿。
肺数虚者亦是。大抵咳久伤肺，元气渐虚，其人有寒热往来，自汗 者，即成肺痿证。治法
宜补血，调肺气清金。虚者用人参清肺汤之类。
人参平胃散 治火克肺金，传为肺痿，咳嗽喘呕，痰涎壅盛，胸膈痞满，咽嗌不利。
知母茯苓汤 治肺痿咳嗽不已，往来寒热，自汗。
（海藏）紫菀散 治咳嗽，唾中有脓血，欲成虚劳肺痿肺痈。（三方见咳嗽门。）
（葛氏）保和丸 治劳嗽成肺痿。（方见痨瘵门。）
润肺膏 治久咳肺燥成痿。
羊肺（一具） 杏仁（去皮尖净研） 柿霜 真酥 真粉（各一两） 白蜜（二两）
上将羊肺洗净，次将药入，水搅匀粘，灌入肺中，白水煮熟服。
（《千金》）生姜甘草汤 治肺痿，咳唾涎痰不止，咽燥而渴。
生姜（二两） 人参（一两） 甘草（两半） 大枣（十五枚）
上水四碗，煮二碗，分三服。
甘草干姜汤 治肺痿吐涎沫，不能咳者，其人不渴，必遗溺，小便数。所以然者，以上虚不能
制下故也。此为肺中冷，必眩运。
甘草（炙，二两） 干姜（一两）
水四升，煮一升，半热服。
桂枝皂角汤 治肺痿。
桂枝（一两） 甘草（半两） 大枣（十二枚，去核） 皂角（四条，炙，去皮弦）
上作三服水煎。
The *Jingui Yaolue* states: When heat is located in the upper jiao (upper burner), it leads to Lung萎 (Lung atrophy/flaccidity) due to cough. This condition arises from excessive sweating, vomiting, polydipsia with frequent urination, or constipation followed by the misuse of harsh purgatives causing diarrhea, resulting in a severe loss of body fluids. Therefore, if the cunkou pulse is rapid, the patient coughs, and there are turbid saliva and frothy sputum in the mouth, this indicates Lung萎 (Lung atrophy/flaccidity). A deficiency-rapid lung pulse also indicates this condition. Generally, prolonged cough damages the Lung qi, gradually depleting the primordial qi. If the patient experiences alternating chills and fever and spontaneous sweating, Lung萎 (Lung atrophy/flaccidity) syndrome forms. The treatment method should focus on nourishing blood, regulating Lung qi, and clearing Lung metal (clearing the Lungs). For deficiency patterns, formulas such as Renshen Qingfei Tang (Ginseng Decoction for Clearing the Lungs) are appropriate.
A cunkou pulse that is rapid and deficient indicates Lung萎 (Lung atrophy/flaccidity). A rapid and excess pulse indicates Lung abscess (Fei Yong), which results from cough damaging the lungs and forming an abscess.
Renshen Pingwei San (Ginseng Powder for Calming the Stomach) treats fire pathogen overcoming Lung metal, transmitting into Lung萎 (Lung atrophy/flaccidity), manifesting as cough, wheezing, vomiting, copious phlegm-saliva, chest and diaphragm fullness and oppression, and throat discomfort.
Zhimu Fuling Tang (Anemarrhena and Poria Decoction) treats persistent cough due to Lung萎 (Lung atrophy/flaccidity), accompanied by alternating chills and fever and spontaneous sweating.
(Zhang Yuansu/Haizang) Ziwan San (Aster Powder) treats cough with pus and blood in the sputum, indicating impending development of consumptive disease, Lung萎 (Lung atrophy/flaccidity), or Lung abscess. (These three formulas are found in the Cough chapter.)
(Ge Hong) Baohe Wan (Harmony Preservation Pill) treats chronic coughing consumption developing into Lung萎 (Lung atrophy/flaccidity). (This formula is found in the Tuberculosis chapter.)
Runfei Gao (Moistening Lung Paste) treats Lung dryness leading to萎 (atrophy/flaccidity) due to prolonged cough.
Sheep Lung (one whole organ) Xingren (Apricot Seed, peeled and core removed, cleaned and ground) Shishuang (Persimmon Frost) Zhen Su (True Butter/Cream) Zhen Fen (True Rice Flour, each one tael) Bai Mi (White Honey, two taels)
First, clean the sheep lung thoroughly. Then insert the herbs into it, mix with water until uniformly viscous, and infuse the mixture into the lung. Cook in plain water until done and consume.
(*Qianjin Fang*) Shengjiang Gancao Tang (Fresh Ginger and Licorice Decoction) treats Lung萎 (Lung atrophy/flaccidity) with incessant coughing and expectoration of frothy sputum, dry throat, and thirst.
Shengjiang (Fresh Ginger, two taels) Renshen (Ginseng Root, one tael) Gancao (Licorice Root, one and a half taels) Dazao (Jujube, fifteen fruits)
Add four bowls of water, boil down to two bowls, and divide into three doses.
Gancao Ganjiang Tang (Licorice and Dried Ginger Decoction) treats Lung萎 (Lung atrophy/flaccidity) with expectoration of frothy saliva and inability to cough. Such patients do not feel thirsty but inevitably suffer from urinary incontinence or frequent urination. This occurs because upper jiao deficiency fails to control the lower jiao. This indicates cold in the Lung, inevitably accompanied by dizziness.
Gancao (Licorice Root, roasted, two taels) Ganjiang (Dried Ginger, one tael)
Add four sheng of water, boil down to one sheng, and take warm.
Guizhi Zaojiao Tang (Cinnamon Twig and Gleditsia Decoction) treats Lung萎 (Lung atrophy/flaccidity).
Guizhi (Cinnamon Twig, one tael) Gancao (Licorice Root, half a tael) Dazao (Jujube, twelve fruits, pitted) Zaojiao (Gleditsia Sinensis Fruit, four strips, roasted, skin and fibrous membrane removed)
Divide into three doses and decoct in water.