桑惠民病风，面黑色，畏风不敢出，爬搔不已，眉毛脱落作癞，医三年。一日，
戴人到棠溪，来求治于戴人。戴人曰∶非癞也。乃出《素问·风论》曰∶肾风之状，多
汗恶风，脊痛不能正立，其色 ，面 然浮肿。今公之病，肾风也。
宜先刺其面，大出血，其血当如墨色，三刺血变色矣。于是下针，自额上下
针，直至颅顶皆出血，果如墨色。偏肿处皆针之，惟不针目锐 外
旁，盖少阳经，此少血多气也。隔日又针之，血色乃紫。二日外又刺，其血色变赤。初针时痒
，再刺则额觉痛，三刺其痛不可任，盖邪退而然也。待二十余日，又轻刺一遍，方已。每刺必
以冰水洗其面血，十日黑色退，一月面稍赤，三月乃红白。但不服除根下热之药，病再作。戴人在东方，无能治者。
戴人见一男子，目下肿如卧蚕状。戴人曰∶目之下，阴也，水亦阴也。肾以水为
之主，其肿至于目下故也。此由房室交接之时，劳汗遇风，风入皮腠，得寒则闭，风不能出
，与水俱行，故病如是。不禁房则死。
高评事，中风稍缓，张令涌之；后服铁弹丸，在《普济》加减方中。或问张曰∶
君常笑人中风，服铁弹丸，今自用之，何也？张曰∶此收后之药也。今人用之于大势方来之时，
正犹蚍蜉撼大树，不识次第故也。
桑惠民患有风病，面色发黑，畏惧风吹不敢出门，不停抓挠，眉毛脱落形成癞疮，就医三年。一天，戴人来到棠溪，桑惠民前来请求戴人治疗。戴人说：“这不是癞疮。”于是引用《素问·风论》说：“肾风的症状，多汗怕风，脊背疼痛不能直立，面色晦暗，面部浮肿。”如今您的病，是肾风。应该先针刺面部，放出大量血液，血色应当像墨色一样，针刺三次后血色就会改变。”于是下针，从额头向下直到头顶都出血，果然像墨色一样。肿胀偏侧的地方都进行了针刺，唯独没有针刺目锐眦（外眼角）旁边，因为那是少阳经，此处血少气多。隔日又进行针刺，血色变为紫色。两天后又针刺，血色变为红色。初次针刺时感到瘙痒，再次针刺则额头感觉疼痛，第三次针刺时疼痛难以忍受，这是因为邪气退去而导致的。等待二十多天后，又轻轻针刺一遍，病才痊愈。每次针刺必定用冰水洗去脸上的血，十天黑色消退，一个月面部稍变红，三个月后变成红白色。但是如果不服用清除根本热邪的药物，疾病会复发。戴人在东方，没有人能治愈此病。
戴人看见一名男子，眼下肿胀像卧蚕的形状。戴人说：“眼睛下方，属阴；水也属阴。肾以水为主宰，所以肿胀出现在眼下。这是由于在房事交接之时，劳累出汗遇到风，风进入皮肤腠理，遇到寒冷则闭塞，风不能排出，与水一起运行，所以生病如此。如果不禁止房事则会死亡。”
高评事患中风，病情稍缓，张从正令其涌吐；后来服用铁弹丸，该方收录于《普济本事方》的加减方中。有人问张从正说：“您常嘲笑别人患中风时服用铁弹丸，现在自己却使用它，为什么呢？”张从正说：“这是收功后的药物。现在的人在大势（病邪）正要发作的时候使用它，正如同蚂蚁撼动大树，是不懂得先后次序的缘故。”
Mr. Sang Huimin suffered from wind disease, with a dark complexion, aversion to wind such that he dared not go out, incessant scratching, loss of eyebrows leading to leprosy-like sores, and had been treated by physicians for three years. One day, Dai Ren (Zhang Congzheng) arrived at Tangxi, and Mr. Sang came to seek treatment from him. Dai Ren said, "This is not leprosy." He then cited the *Suwen: Feng Lun* (Treatise on Wind in the Plain Questions): "The manifestations of Kidney Wind include excessive sweating, aversion to wind, back pain preventing upright standing, a dull complexion, and facial edema." Your current condition is Kidney Wind. It is advisable to first puncture the face to induce copious bleeding; the blood should appear ink-black. After three punctures, the blood color will change." Thus, needles were inserted, bleeding from the forehead down to the vertex of the skull, and indeed the blood was ink-black. All swollen areas were punctured, except for the region beside the lateral canthus (outer corner of the eye), as this area belongs to the Shaoyang channel, where blood is scant and Qi is abundant. Two days later, puncturing was performed again, and the blood turned purple. After another two days, further puncturing resulted in red blood. During the initial puncture, there was itching; upon the second puncture, the forehead felt painful; during the third puncture, the pain was unbearable, which occurred because the pathogenic factor was receding. After waiting more than twenty days, a light puncture was performed once more, after which the condition resolved. Each time, the blood on the face was washed away with ice water. Within ten days, the blackness faded; within one month, the face became slightly reddish; within three months, it turned red and white. However, without taking herbs to clear the root heat, the disease would recur. In the eastern region, no one else could cure this illness.
Dai Ren observed a man whose lower eyelids were swollen like a lying silkworm. Dai Ren said, "The area below the eyes is Yin; water also belongs to Yin. The Kidney governs water, hence the swelling appears below the eyes. This arises from engaging in sexual intercourse while fatigued and sweating; wind enters the skin and interstices. Upon encountering cold, it becomes closed, trapping the wind which cannot exit, and moves together with water, thus causing this illness. If sexual activity is not abstained from, death will ensue."
Magistrate Gao suffered from stroke (Zhongfeng), with symptoms slightly alleviated. Zhang Congzheng induced vomiting (Yong method); subsequently, he took Tie Dan Wan (Iron Pill), which is included in the modified prescriptions of the *Puji Fang*. Someone asked Zhang, "You often ridicule others for taking Tie Dan Wan when suffering from stroke, yet now you use it yourself. Why?" Zhang replied, "This is a medication for the consolidation phase (post-acute). People who use it when the pathogenic trend is just beginning to rise are like ants trying to shake a large tree; they fail to understand the proper sequence of treatment."