生地黄（一斤） 白术（一斤） 好面（二斤）
上三味。合捣。令相得。曝干。下筛。酒服方寸匕。日三。加至二匕。
琥按上主治云。心下停水。当是脾气虚热而不和也。故上方用生地以凉之。白术以补之。好面以和之。
或问心下停水。而反用地黄。得毋泥膈邪。余答云。生地之性宣通。不比熟地之泥膈。况助以白术好面。则中焦
之湿热清。而土气得益。水自不停。食自能下矣。仲景法。大病瘥后。从腰以下有水气者。牡蛎泽泻散主之。其药甚厉。
此云。心下停水。而其药又甚平。可见先圣后贤。其因证制方。各臻其妙。岂粗工所能仿佛乎哉。
又曰。妇人温病虽瘥。若未平复。血脉未和。尚有热毒。而与之交接。得病者。名为阴易之病。其人身体重。热上
冲胸。头重不能举。眼中生眵 。（一作膜 。）四肢（一云膝胫）拘急。小腹绞痛。手足拳。皆即死。其亦有不即死者。
病苦小腹里急。热上冲胸。头重不欲举。百节解离。经脉缓弱。血气虚。骨髓竭。便嘘嘘吸吸。气力转少着床不能动摇。
起止仰人。或引岁月。方死。医者。张苗。说有婢得瘥后。数日。有六人奸之皆死。
取所交接妇人衣服。以覆男子。立愈。又一方取女人手足爪二十枚。女人中衣带（中衣。里衣也。外台方作衣中裳。）
一尺。烧以酒。若米饮汁服之。
琥按上二方。即仲景烧 散之遗意也。男病取女。女病取男。如法服之。
深师疗妇人得温病虽瘥。平复未满一百日。不可与交合。交合为阴易之病。病必拘急手足拳皆死。丈夫病以易妇人。
名为阳易。速当疗之。可瘥满四日不可疗也。宜令服此药方。
干姜（四两）
上一味。捣末。汤和。一顿服。温覆汗出。得解止。手足伸遂愈。
琥按仲景云。阴阳易。乃伤寒病瘥后之证。至深师与孙真人。皆指为温病瘥后之证。何也。此犹之太阳病中风伤
寒。其初虽异而其传变则一也。温病后。是感得温热之余气。而反用干姜一味者。何也。此必是男女因交接之时。走脱
阳气。令不病者。反得病。故用干姜之辛热。使顿服之也。病候多端。制方不一。今姑存之。以备采择。
[Shengdi Huang Formula]
Shengdi Huang (Rehmanniae Radix, 1 jin), Baizhu (Atractylodis Macrocephalae Rhizoma, 1 jin), and high-quality flour (2 jin).
The above three ingredients are mixed, pounded together until uniform, dried in the sun, and sifted. Take one fangcun bi (a traditional Chinese measure for powder) with wine, three times a day. The dosage may be gradually increased to two fangcun bi.
Commentary by Hu: The aforementioned main indication describes "water retention under the heart" (Xin Xia Ting Shui). This should be due to Spleen Qi deficiency and internal heat causing disharmony. Therefore, the above formula uses Shengdi Huang to cool and clear heat, Baizhu to tonify Spleen Qi, and high-quality flour to harmonize the Middle Jiao.
One might ask: "If there is water retention under the heart, why use Rehmannia? Will it not cause stagnation?" I reply: "The nature of Shengdi Huang is circulating and unobstructing, unlike Shu Di Huang which can be cloying and obstructive. Moreover, assisted by Baizhu and flour, the damp-heat in the Middle Jiao will be cleared, and the Earth Qi (Spleen/Stomach function) will benefit. Water will naturally cease to accumulate, and food intake will resume." According to Zhang Zhongjing's methods, for patients after a major illness who have fluid accumulation below the waist, Muli Zexie San (Oyster Shell and Thunberg Fritillary Powder) is indicated. These drugs are very potent/aggressive. Here, it refers to water retention under the heart, yet the drugs used are very mild. This shows that ancient sages and later sages tailored formulas to specific conditions, each achieving subtlety and excellence. How could crude physicians hope to emulate this?
Furthermore: If a woman suffers from Warm Disease (Wen Bing) but has not fully recovered, her blood vessels are not yet harmonized, and residual toxic heat remains, engaging in sexual intercourse may cause the infected party to contract a disease named "Yin Yi" (Yin Exchange). Symptoms include heavy body sensation, hot qi rushing up to the chest, heaviness in the head making it difficult to lift, excessive eye discharge (or eye membrane), spasm and urgency in the four limbs (or knees and shins), severe colic in the lower abdomen, and curling of hands and feet. These conditions may lead to immediate death. Those who do not die immediately suffer from urgency and tension in the lower abdomen interior, hot qi rushing to the chest, heaviness in the head preventing lifting, joints feeling loose and separated, meridians becoming slack and weak, deficiency of Blood and Qi, exhaustion of Marrow, shallow and rapid breathing, decreasing physical strength, inability to move while lying in bed, requiring assistance to stand or walk, and some may linger for months or years before dying. Physician Zhang Miao stated that he knew of a maid-servant who, several days after recovering from an illness, was assaulted by six men, all of whom died.
Take the clothes worn by the woman involved in the intercourse and cover the man with them; he will recover immediately. Another prescription: Take twenty pieces of fingernails or toenails from a woman, and one chi (approx. 33 cm) of the belt from her inner garment (inner garment refers to underwear; *Waitai Miyao* records this as 'clothing middle skirt'). Burn these into ash and administer with wine or rice water decoction.
Commentary by Hu: The above two prescriptions embody the intent of Zhang Zhongjing's Shao Kun San (Burnt Underwear Powder). For male illness, take female garments; for female illness, take male garments. Administer according to the method.
*Shen Shi Fang* treats women who have suffered from Warm Disease and although recovered, if less than one hundred days have passed since full recovery, sexual intercourse is forbidden. Intercourse leads to "Yin Yi" disease, characterized by spasms, urgency, and curling of hands and feet, leading to death. If a husband's illness is transmitted to his wife, it is named "Yang Yi". It must be treated promptly; if more than four days have passed since recovery, it cannot be treated. The patient should be given this prescription.
Gan Jiang (Dried Ginger, 4 liang).
Pound the single ingredient into powder, mix with boiling water, and take in one dose. Cover warmly to induce sweating. Stop when sweat appears and the condition resolves. Extension of hands and feet indicates recovery.
Commentary by Hu: Zhang Zhongjing stated that "Yin Yang Yi" is a syndrome occurring after the recovery from Cold Damage (Shang Han). However, *Shen Shi Fang* and Sun Simiao both refer to it as a syndrome after the recovery from Warm Disease. Why? This is analogous to Wind Strike and Cold Damage in the Taiyang stage; although they differ initially, their progression is the same. After Warm Disease, the pathogen is residual warm-heat qi. Why use only Gan Jiang? This is likely because during sexual intercourse, Yang Qi escapes and dissipates, causing the healthy partner to fall ill. Therefore, the pungent and hot nature of Gan Jiang is used, administered in a single dose. Since symptoms vary widely and formulas differ accordingly, we preserve this text here for reference.