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。
【生地黄方】
生地黄（一斤）、白术（一斤）、优质面粉（二斤）。
以上三味药，混合捣碎，使其均匀，晒干后过筛。用酒送服一方寸匕的药粉，每日三次，剂量可逐渐增加至两方寸匕。
胡氏按语：上述主治症状描述为“心下停水”，这应当是脾气虚弱、虚热内扰导致的不调和。所以上面的方子使用生地黄来清热凉血，使用白术来补益脾气，使用优质面粉来调和脾胃。
有人问：“心下有停水，反而使用地黄，难道不会滋腻碍胃吗？”我回答说：“生地黄的性质宣通流畅，不像熟地黄那样滋腻碍膈。况且辅以白术和优质面粉，就能清除中焦的湿热，使脾土之气得到增益，水湿自然不再停留，食物也能顺利吞咽了。”张仲景的法度中，大病初愈后，腰部以下有水气者，用牡蛎泽泻散主治。那些药物药性非常猛烈。这里说的是心下停水，而所用的药物又非常平和，可见古代圣人和后世贤人，根据证候制定方剂，各自达到了精妙的境界，难道是粗劣的医生所能企及的吗？
又说：妇女患温病虽然痊愈，如果身体尚未完全恢复，血脉尚未调和，体内尚有余留的热毒，此时若进行房事，患病的一方，名为“阴易”之病。患者身体沉重，热气上冲胸部，头部沉重无法抬起，眼中分泌物增多（一说为眼膜），四肢（一说为膝盖和小腿）拘挛紧急，小腹绞痛，手足蜷缩，这些情况都会立即致死。也有不立即死亡的，痛苦在于小腹部里急后重，热气上冲胸部，头部沉重不想抬起，全身关节松懈无力，经脉弛缓软弱，血气虚弱，骨髓枯竭，呼吸微弱短促，体力逐渐减少，卧床不能动弹，起身需要依靠他人搀扶，有的拖延岁月才死亡。医生张苗说，曾有一个婢女在病愈后几天内，被六名男子奸污，结果都死了。
取该发生房事的妇人的衣服，覆盖在男子身上，立刻就会痊愈。另一个方子：取女人的手脚指甲二十枚，以及女人贴身内衣的腰带（中衣即里衣，《外台秘要》中作“衣中裳”）一尺，烧成灰后用酒或米汤送服。
胡氏按语：上述两个方子，就是张仲景“烧裈散”的遗意。男子患病取女子的衣物，女子患病取男子的衣物，按照方法服用。
《深师方》治疗妇人患温病虽然痊愈，但身体完全恢复未满一百日，不可进行房事。房事后会导致“阴易”之病，病情必定出现拘挛紧急、手足蜷缩，都会致死。丈夫患病传染给妇人，名为“阳易”。应当迅速治疗，如果痊愈已满四天则不可再治疗。适宜让患者服用此药方。
干姜（四两）。
以上一味药，捣成粉末，用开水调和，一次性服用。服药后盖被保暖以出汗，汗出病解即止，手足伸展即可痊愈。
胡氏按语：张仲景说，“阴阳易”是伤寒病初愈后的证候。到了《深师方》和孙思邈真人那里，都将其指为温病初愈后的证候。为什么呢？这就像太阳病中的中风和伤寒，起初虽然不同，但其传变规律是一致的。温病之后，是感受了温热病的余气，却反而只用干姜一味药，为什么呢？这一定是男女因房事之时，阳气耗散脱失，使得原本没病的人反而得了病，所以使用干姜的辛热之性，使其顿服。病候表现多种多样，制方也不尽相同，现在姑且保存下来，以备参考选择。
[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.