病源肺主于皮毛，肾主于水，肾虚则水妄行，流溢于皮肤，故令身体面目悉肿。按之没
指而无汗也，腹如故，不满亦不渴，四肢重而不恶风是也，脉浮者名皮水也。（出第二十卷
中）
深师疗皮水，如肿水气在皮肤中，四肢集集动，木防己汤方。
木防己（三两） 黄 （三两） 桂心（三两） 茯苓（六两） 甘草（二两炙）
上五味切，以水六升，煮取二升分，再服，忌海藻菘菜生葱酢物。（出第十九卷中）
范汪皮水一身面目悉肿，甘草麻黄汤主之方。
甘草（二两炙） 麻黄（四两去节）
上二味，以五升水先煮麻黄再沸，去上沫，乃纳甘草煮得一升，绞去滓，适寒温，先服
一升，重复之，日移二丈所当汗出，汗出勿复服，不汗乃复服，当慎护风寒，数日乃出入，
忌海藻菘菜。（出第二十八卷中）
古今录验皮水，越婢汤加水主之方。
麻黄（六两去节） 大枣（十二枚擘） 白术（四两） 生姜（三两切） 甘草（二两
炙） 石膏
（半斤）
上六味 咀，以水七升，煮麻黄一二沸，去上沫，乃纳余药煮，取二升，绞去滓，适寒
温，服七合，日三，忌同前。（范汪同已上三方并本出仲景伤寒论）
病源肾者，阴气也，主于水，而又主腰脚，肾虚则腰脚血气不足，水之流溢，先从虚而
入，故脚先肿也。（出第二十一卷中）
肘后若肿从脚起稍上进者，入腹则杀人，疗之方。
小豆一斛，煮令极烂，得四五斗汁，温以渍膝以下，日日为之，数日消尽。若已入腹者
不复渍，但煮小豆食之，莫杂吃饭及 （音圭）鱼盐，又专饮小豆汁，无小豆，大豆亦可用，
如
此之
又方
削楠及桐木煮取汁以渍之，并饮少许，如小豆法。（并出第一卷中）
范汪疗水肿从足始，转上入腹则杀人，豚肝方。
生猪肝一具，煮如食法，细切，顿食令尽，不得用盐，可用苦酒，猪重五六十斤以上肝
者，一顿啖尽，百斤以上猪者，分两服。（肘后同）
又若但两足肿者方。
锉葱叶煮令烂以渍之，日三四度，良也。（集验同并出第二十八卷中）
病因方面，肺主司皮毛，肾主司水液。肾气虚弱则水液妄行，流溢于皮肤之间，因此导致身体和面目全部浮肿。按压肿胀处凹陷不起且无汗出，腹部形态如常，既不胀满也不口渴，四肢沉重但不恶风，脉象浮的，称为皮水。（出自第二十卷中）
深师方治疗皮水，症状表现为水肿之气在皮肤之中，四肢肌肉跳动不安，使用木防己汤方。
木防己（三两） 黄芪（三两） 桂心（三两） 茯苓（六两） 甘草（二两，炙）
以上五味药切碎，用水六升，煮取二升药汁，分两次服用，禁忌食用海藻、菘菜、生葱及醋制食物。（出自第十九卷中）
范汪方治疗皮水，症状为全身和面目全部浮肿，以甘草麻黄汤为主治方。
甘草（二两，炙） 麻黄（四两，去节）
以上两味药，用五升水先煮麻黄，煮沸两次后，撇去上浮的泡沫，然后加入甘草，再煮取一升药汁，过滤去渣滓，待温度适宜时，先服用一升，若未出汗可再次服用，大约行走二丈的距离应当出汗，出汗后不要再服用，若不出汗则继续服用，应当谨慎防护风寒，数日后才能外出，禁忌食用海藻、菘菜。（出自第二十八卷中）
古今录验方治疗皮水，使用越婢汤加白术主治方。
麻黄（六两，去节） 大枣（十二枚，掰开） 白术（四两） 生姜（三两，切片） 甘草（二两，炙） 石膏（半斤）
以上六味药捣碎，用水七升，先煮麻黄一二沸，撇去上浮的泡沫，然后加入其余药物一起煮，取二升药汁，过滤去渣滓，待温度适宜时，每次服用七合，每日三次，禁忌同前。（范汪方的上述三方均本出于张仲景的《伤寒论》）
病因方面，肾属阴气，主司水液，又主司腰脚。肾气虚弱则腰脚的气血不足，水液流溢，首先从虚处侵入，所以脚部先出现浮肿。（出自第二十一卷中）
肘后备急方：如果浮肿从脚部开始并稍向上蔓延，若进入腹部则会致死，治疗方法如下。
赤小豆一斛，煮至极度烂熟，得到四五斗汁液，温热时浸泡膝盖以下部位，每天进行，数日后肿胀消退。如果已经入腹，则不再浸泡，只煮赤小豆食用，不要混杂米饭及鲑鱼、盐，另外专门饮用赤小豆汁，若无赤小豆，大豆也可以使用，如此这般。
另一个方子：削下楠木和桐木煮取汁液用来浸泡，并少量饮用，方法同赤小豆。（均出自第一卷中）
范汪方治疗水肿从足部开始，若向上蔓延进入腹部则会致死，使用猪肝方。
生猪肝一个，按食用方法煮熟，切成细末，一次性吃完，不得用盐，可用醋，体重五六十斤以上的猪的肝脏，一顿吃尽；体重一百斤以上的猪的肝脏，分两次服用。（与《肘后方》相同）
另外，如果只是双脚浮肿的方子。
切碎葱叶煮至烂熟用来浸泡，每天三四次，效果良好。（与《集验方》相同，均出自第二十八卷中）
Etiologically, the Lung governs the skin and hair, while the Kidney governs water metabolism. When Kidney deficiency occurs, water flows recklessly and overflows into the skin, causing swelling of the entire body and face. Upon pressing the swollen area, an indentation remains without sweat appearing; the abdomen remains normal in shape, without fullness or thirst; the limbs feel heavy but there is no aversion to wind. If the pulse is floating, this condition is named Pi Shui (Skin Water) [Edema affecting the skin]. (From Volume 20)
The Shen Shi formula treats Pi Shui (Skin Water), characterized by edematous qi within the skin and twitching movements in the four limbs, using the Mugufangji Tang (Cocculus Decoction).
Mugufangji (Stephaniae Tetrandrae Radix) (3 liang), Huangqi (Astragali Radix) (3 liang), Guixin (Cinnamomi Cortex) (3 liang), Fuling (Poria) (6 liang), Gancao (Glycyrrhizae Radix et Rhizoma, honey-fried) (2 liang).
The above five herbs are cut, boiled in 6 sheng of water to obtain 2 sheng of decoction, taken in two doses. Avoid consuming Haizao (Sargassum), Songcai (Brassica rapa var. pekinensis), raw Cong (Allium fistulosum), and vinegar-preserved foods. (From Volume 19)
The Fan Wang formula treats Pi Shui (Skin Water) with swelling of the whole body and face, primarily using the Gancao Mahuang Tang (Licorice and Ephedra Decoction).
Gancao (Glycyrrhizae Radix et Rhizoma, honey-fried) (2 liang), Mahuang (Ephedrae Herba, nodes removed) (4 liang).
The above two herbs are boiled in 5 sheng of water; first boil Mahuang (Ephedrae Herba) until it boils twice, skim off the foam on the surface, then add Gancao (Glycyrrhizae Radix et Rhizoma) and boil to obtain 1 sheng of decoction. Strain out the dregs. When the temperature is suitable, take 1 sheng first. If sweating does not occur, repeat the dose. After walking approximately 2 zhang, sweating should occur. Do not take more after sweating; if no sweat occurs, continue taking it. Carefully protect against wind and cold; only go out after several days. Avoid Haizao (Sargassum) and Songcai (Brassica rapa var. pekinensis). (From Volume 28)
The Jin Gu Lu Yan formula treats Pi Shui (Skin Water), using Yuebi Tang (Yuebi Decoction) plus Baizhu (Atractylodis Macrocephalae Rhizoma) as the main treatment.
Mahuang (Ephedrae Herba, nodes removed) (6 liang), Dazao (Ziziphi Jujubae Fructus, broken) (12 pieces), Baizhu (Atractylodis Macrocephalae Rhizoma) (4 liang), Shengjiang (Zingiberis Rhizoma Recens, sliced) (3 liang), Gancao (Glycyrrhizae Radix et Rhizoma, honey-fried) (2 liang), Shigao (Gypsum Fibrosum) (0.5 jin).
The above six herbs are crushed, boiled in 7 sheng of water; first boil Mahuang (Ephedrae Herba) for one or two boils, skim off the foam, then add the remaining herbs and boil to obtain 2 sheng of decoction. Strain out the dregs. When the temperature is suitable, take 7 he per dose, three times a day. Dietary restrictions are the same as before. (The above three formulas from Fan Wang are originally from Zhang Zhongjing's Shanghan Lun [Treatise on Cold Damage]).
Etiologically, the Kidney belongs to Yin Qi, governs water metabolism, and also governs the waist and legs. Kidney deficiency leads to insufficient blood and qi in the waist and legs; water overflows and enters first through the deficient areas, so swelling begins in the feet. (From Volume 21)
The Zhouhou Beiji Fang: If swelling starts from the feet and progresses slightly upward, entering the abdomen will cause death. The treatment method is as follows.
Xiaodou (Vigna angularis) one hu, boiled until extremely soft, yielding 4-5 dou of juice. Soak the knees and below in the warm juice daily. After several days, the swelling will subside completely. If it has already entered the abdomen, do not soak; instead, boil Xiaodou (Vigna angularis) and eat it. Do not mix with rice, Gui fish, or salt. Drink exclusively Xiaodou (Vigna angularis) juice. If Xiaodou (Vigna angularis) is unavailable, Dadou (Sojae Semen Album) can be used.
Another formula: Peel Nanmu (Phoebe zhennan) and Tongmu (Vernicia fordii) wood, boil to obtain juice for soaking, and drink a small amount, following the method of Xiaodou (Vigna angularis). (From Volume 1)
Fan Wang formula treats Edema starting from the feet, which becomes fatal if it spreads upward into the abdomen, using Zhu Gan (Porcine Liver) formula.
One fresh pig liver, cooked according to dietary methods, finely chopped, and eaten all at once. Do not use salt; vinegar may be used. For pigs weighing 50-60 jin or more, consume the liver in one sitting. For pigs weighing over 100 jin, divide into two doses. (Same as Zhouhou Beiji Fang)
Another formula for swelling limited to both feet.
Chopped Congye (Allii Fistulosi Folium) boiled until soft, used for soaking, 3-4 times daily, yields good results. (Same as Jiyan Fang, From Volume 28)