张嗣伯尝闻屋中呻吟声嗣伯曰此病甚重乃往视之见一老姥称体痛而处处有黯黑无数嗣伯
还煮
斗余汤送令服之服讫痛势愈甚跳投床者无数须臾所黯处皆拔出钉长寸许以膏涂疮口三日而复
云此名钉疽也(史记)
唐李 尝疾医诊之云得须灰服之方止太宗遂自翦髭烧灰赐服之复令敷痈疮立愈故白乐天
云翦须烧药赐功臣 仁宗皇帝赐吕夷简古人有语髭可治疾今联翦髭与之合药表朕意也
唐柳柳州纂救死三方云元和十二年二月得干香港脚夜半痞绝左胁有块大如石且死因大寒不
知人
三日家人号哭荣阳郑洵美传杉木汤服半食顷大下三次气通块散用杉木节一大升橘叶一升无叶
以皮代大腹槟榔七个合子碎之童子小便三大升共煮一升半分二服若一服得快利停后服以前三
死皆死矣会有教者皆得不死恐他人不幸有类予病故传焉(本事方)
道士王裕曰有忽患脚心如中箭发歇不时此肾之风毒泻肾愈(泊宅编同上)
今人谓之香港脚者黄帝所谓缓风温痹也千金云顽弱名缓风疼痛为温痹
饶医熊彦诚年五十五岁病前后便溲不通五日腹胀如鼓同辈环视皆不能措力与西湖妙果僧
慧月
相善遣信邀致诀别月惊驰而往过钓桥逢一异客风姿潇洒出尘揖之曰方外高士何孑孑走趋如此
月曰一善友久患闭结势不可疗急欲往问客曰此易事也侍奉施一药即脱靴入水探一大螺而出曰
事济矣持抵其家以盐半匕和壳生捣碎置病者脐下一寸三分用宽帛紧系之仍办触器以须其通
月未深以为然姑巽谢之熊昏不知人妻子聚泣诸医知无他策谩使试之曾未安席砉然暴下医愧叹
而散月归访异人无所见矣熊后十六年乃终白石董守约以香港脚攻注为苦或教之捶数螺敷两股上
便觉冷气趋下至足既而亦安(类编)
张嗣伯曾听到屋中有呻吟声，说道：“这病很重。”于是前去查看，见一位老妇人全身疼痛，且身上有无数处暗黑色的斑点。张嗣伯回去后煮了一斗多的汤药，送给她服用。服完后，疼痛加剧，许多人跳起来投到床上（痛苦不堪）。不久之后，那些暗黑色部位都拔出了像钉子一样的东西，长约一寸多。用膏药涂抹疮口，三天后痊愈。这种病名叫钉疽。（出自《史记》注引）
唐代李绅曾患病，医生诊断说必须服用胡须灰才能停止病情。唐太宗便亲自剪下自己的胡须烧成灰赐给他服用，又令其敷在痈疮上，立刻痊愈。所以白居易写道：“剪须烧药赐功臣。”宋仁宗皇帝曾赐给吕夷简胡须，古人有话说胡须可以治病，如今我剪下胡须与他合药，以表达我的心意。
唐代柳宗元（柳州）编纂了三个救死方子，说道：元和十二年二月，我得了严重的香港脚（足部疾患），半夜里气机痞塞隔绝，左胁下有肿块大如石头，几乎要死了。因为受大寒而昏迷不知人。三天后家人痛哭流涕。荥阳郑洵美传授杉木汤，服用半顿饭的功夫，大便下了三次，气机通畅，肿块消散。方用杉木节一大升、橘叶一升（没有叶子就用树皮代替）、大腹槟榔七个（连子捣碎）、童子小便三大升，共同煎煮至一升半，分两次服用。如果一次服药后顺利通便，就停服第二次。以前这三个必死的病例都死了，如果有教导的人，都能不死。恐怕他人不幸也有类似我的病，所以传扬它。（出自《本事方》）
道士王裕说：有人忽然患脚心像被箭射中一样，发作间歇不时，这是肾的风毒，泻肾即可痊愈。（出自《泊宅编》，同上）
现在人称的香港脚，就是黄帝所说的缓风、温痹。《千金方》说：肢体顽弱称为缓风，疼痛称为温痹。
饶州医生熊彦诚，五十五岁，病发前后大小便不通五日，腹胀如鼓。同辈环视，都不能想办法。他与西湖妙果寺僧人慧月关系很好，派人邀请他诀别。慧月惊慌地赶去，经过钓桥时遇到一位异客，风度潇洒，超脱尘世。那人拱手行礼说：“您是方外的高士，为何如此匆匆忙忙奔走？”慧月说：“一位善友久患闭结之症，势不可治，急欲前往询问。”客人说：“这很容易的事。”侍奉施予一种药，即脱下靴子入水探出一个大螺出来，说：“事情办成了。”拿着回到他家，用半匙盐和壳一起生捣碎，放在病人脐下一寸三分处，用宽布紧紧系住。还准备触器以等待其通便。慧月当时不很相信，姑且谦逊地道谢。熊彦诚昏迷不知人，妻子儿女聚集哭泣。各位医生知道没有其他办法，随便让他试试。还没坐定，突然猛烈泻下，医生们惭愧叹息而散去。慧月回去寻访异人，却无所见。熊彦诚后来过了十六年才去世。董守约因香港脚攻注为苦，有人教他用槌捶打几个螺，敷在两股上，便觉得冷气趋向下方直到足部，随后也就安好了。（出自《类编》）
Zhang Sibo once heard groaning sounds in a house and said, "This illness is severe." He went to examine the patient and saw an old woman suffering from whole-body pain with numerous dark-black spots all over her body. Zhang Sibo returned home, boiled more than one dou of decoction, and sent it for her to take. After ingestion, the pain intensified, causing many to jump up and throw themselves onto beds in agony. Soon after, nail-like objects, approximately one cun long, were extracted from the dark-black areas. The wounds were treated with ointment, and she recovered in three days. This disease is named Ding Ju (Nail Carbuncle) (cited from *Shiji*).
Li Shen of the Tang Dynasty once fell ill. The physician diagnosed that he needed to consume ash from beard hair to stop the condition. Emperor Taizong personally cut off his own beard, burned it into ash, and bestowed it upon Li Shen for consumption. He also ordered the ash to be applied to the carbuncle wound, which healed immediately. Hence, Bai Juyi wrote: "Cutting beard and burning medicine bestowed upon meritorious officials." Emperor Renzong of Song once bestowed beard upon Lü Yijian. As the ancients said, beard can cure diseases; now I cut my beard to mix with medicine for him, expressing my intent.
Liu Zongyuan (of Liuzhou) of the Tang Dynasty compiled three life-saving prescriptions, stating: In the second month of the Yuanhe 12th year, I suffered from severe Xianggang Jiao (foot disorder). At midnight, my qi became obstructed and blocked, with a lump in the left hypochondrium as large as a stone, nearly leading to death. Due to severe cold exposure, I lost consciousness. For three days, my family wept bitterly. Zheng Xunmei of Xingyang transmitted the Shanmu Tang (Fir Branch Decoction). After half a meal's time, there was profuse diarrhea three times, qi flow resumed, and the lump dispersed. The prescription consists of one sheng of fir branch joints, one sheng of orange leaves (or bark if leaves are unavailable), seven Areca seeds (crushed with shells), and three sheng of urine from an uncircumcised boy. These are boiled together until reduced to one and a half sheng, divided into two doses. If smooth defecation occurs after the first dose, suspend the second dose. Previously, these three cases deemed fatal resulted in death; however, those who received instruction survived. Fearing others might suffer similarly, I transmit this knowledge (from *Benshi Fang*).
Xianggang Jiao is caused by wind-toxin residing internally and must be attacked; therefore, purgation should be performed first.
Daoist Wang Yu stated: Someone suddenly suffered from foot soles feeling like being shot by an arrow, with intermittent attacks. This is kidney wind-toxin; purging the kidney leads to recovery (from *Bozhai Bian*, same source).
What is currently called Xianggang Jiao is what the Yellow Emperor referred to as Huan Feng (Slow Wind) and Wen Bi (Warm Bi). *Qianjin Fang* states: Limb weakness is called Huan Feng, while pain is called Wen Bi.
Xiong Yancheng, a physician from Raozhou, aged fifty-five, suffered from inability to urinate or defecate for five days, with abdominal distension like a drum. His peers looked on helplessly. He was close friends with Monk Huiyue of Miaoguo Temple in West Lake and sent a messenger to invite him for final farewells. Huiyue rushed over in alarm. On crossing Diaqiao Bridge, he met an extraordinary guest who was elegant and transcendent. The guest bowed and asked, "Why does a high scholar of the unworldly realm run about so hurriedly?" Huiyue replied, "A good friend has suffered from obstipation for a long time, which seems incurable. I urgently wish to seek advice." The guest said, "This is easy." He then took off his boot, reached into the water, and pulled out a large snail, saying, "The matter is settled." Taking it home, he mixed half a spoonful of salt with the crushed shell and applied it to the point one cun three fen below the umbilicus, binding it tightly with a wide cloth. He also prepared a tool to await bowel movement. Huiyue did not fully believe it but politely thanked him. Xiong was unconscious, surrounded by weeping wife and children. The physicians, having no other strategy, allowed the trial. Before he could even sit down, there was a sudden, violent discharge. The physicians left in shame and amazement. Huiyue returned to visit the stranger but found no one. Xiong lived for another sixteen years before passing away. Dong Shouyue suffered from Xianggang Jiao attacking and pouring downwards. Someone taught him to crush several snails and apply them to both thighs. He felt cold air moving downwards to the feet, and subsequently recovered (from *Leibian*).