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The etiology stems from the accumulation of water-toxin qi within the body, causing the abdomen to gradually enlarge with a splashing sound upon movement, frequent thirst, rough and dark skin, resembling edema; this is termed Shuigu (Water Distension). (From Volume 21)

Zhouhou treats the condition characterized solely by abdominal distension with splashing sounds and blackened skin, named Shuigu (Water Distension).
Baimaogen (Rhizoma Imperatae, a large handful, sliced) Xiaodou (Vigna angularis, three sheng)
Take the above two ingredients, boil in two sheng of water until dry, remove Baimaogen, consume the beans, and the fluid will discharge via urination.

Another prescription
Shuweicao (Herba Salviae Miltiorrhizae) Mabiancao (Herba Patriniae) (each ten jin)
Slice the above two ingredients, boil in one shi of water to obtain five dou of liquid, filter out the dregs and further decoct until five sheng remain. Mix with flour to make pills, take two pills the size of soybeans per dose, increasing to four or five pills as needed. Avoid fatty meat and raw/cold foods. (All from Volume 1)

Wenzhong treats the condition characterized solely by abdominal distension with splashing sounds and blackened skin, named Shuigu (Water Distension).
Guishan (Fungus/Plant material), crush and extract juice, administer an amount equivalent to a chicken egg, which will immediately induce the discharge of accumulated water; repeat administration until water is fully discharged. If thirsty, grinding Sesame seeds for juice and drinking it is beneficial. (Same as Zhouhou)

Another prescription
Badou (Fructus Crotonis Tiglii, ninety kernels, remove heart and peel, stir-fry until yellow) Xingren (Semen Armeniacae Amarum, sixty kernels, remove skin and tips, stir-fry until yellow)
Crush and mix the above two ingredients, take one pill the size of a small bean, stop when watery stool occurs; avoid alcohol if possible. Contraindicated: pork and Asparagus fern shoots. (Same as Zhouhou, also from Volume 5)

Zhouhou treats sudden generalized edema with swelling of the head, face, and entire body.
Moxibustion on Bairouji (White Flesh Margin, located below the medial malleolus) for three moxa cones results in cure. (Same as Beiji)

Another prescription
Xiangru (Herba Elsholtziae), slice and decoct until concentrated, apply hot compresses to the affected area; it may also be taken internally.

Another prescription
Shanglu Gen (Radix Phytolaccae Acinosae), one jin, scrape off the bark, slice thinly, decoct until soft, filter out dregs, add one jin of mutton, along with green onion, salt, and fermented soybeans, prepare according to normal culinary methods, consume according to the prescribed quantity.

Fan Wang treats sudden generalized edema with swelling of the head, face, and entire body.
Use one large carp, boil in three sheng of pure vinegar until the vinegar is completely evaporated, then eat the fish. Do not mix with vinegar, salt, fermented soybeans, or other substances. Cure can be expected in no more than two preparations. (Same as Beiji; Zhouhou uses pure wine)

Another prescription
Ten kernels from plum stones growing under carts, grind thoroughly; Sanhe (three he) of Jingmi (Oryza sativa var. japonica), grind until broken. Boil in four sheng of water to make porridge, consume when reduced to one or two sheng. Prepare three times daily; if swelling persists, increase the number of kernels. (Same as Zhouhou and Gujin Luyuan, also from Volume 28)

Beiji treats effective prescriptions for sudden onset of edema and fullness. There was a case where someone suddenly developed edema on the dorsum of the foot, spreading upward to the knee, making it impossible to bear weight, unresponsive to various treatments.
Bury Suo (Acalypha australis) stems in hot ashes until extremely hot, apply to the swollen area; replace when cool. The swelling will resolve within one day and night. (From Volume 3)