治风 节，四肢疼痛，如槌锻不可忍。
附子(炮，去皮脐) 干姜(炮) 芍药 茯苓 甘草(炙) 桂心(各三两） 白术(四两） 人参(三两)
上为锉散。每服四大钱，水二盏，煎七分，去滓，食前服。一方，去桂心，用干地黄二两。
最治 节风。近人用之甚效。亦治腰背痛，及香港脚流注。(方见腰痛门)
夫中风寒暑湿，与香港脚，皆渐、顿、浅、深之不同。中风寒暑湿，得之顿而浅；香港脚得
之渐而深，以其随脏气虚实寒热发动，故得气名。其如循经络入腑脏，证候虽不一，然三阳
多热躁，三阴多热烦，亦可类推。但香港脚不专主一气，亦不专在一经，故与中风寒暑湿为异
耳。兼有续生诸病，混杂多端，未易分别。治之，须寻其经络病证，所在去处，然后以脉察
其虚、实、浅、深为治。假如三阳经，其诊多在足外踝及手背；三阴经，其诊多在足内踝及
臂内。以此粗分阴阳，可知大概矣。其如风寒暑湿，性用各各不同，所谓风为行，寒为痛，
暑为顽，湿为着，乃不刊之说。《千金》方论，与董氏颛门，类皆蹈袭旧说，似难凭据。惟
留心斯道者，必有至当之论焉。
《千金》论香港脚，皆由感风毒所致，多不令人即觉，会因他病，乃始发动。或奄然大
闷，经三两日，方乃觉之。庸医不识，谩作余疾治之，莫不尽毙。缘始觉甚微，食饮嬉戏，
气力如故，惟卒起脚屈弱为异耳。及论风毒相貌云，夫有脚未觉异，而头、项、臂、膊，
已有所苦；诸处皆悉未知，而心腹五内，已有所困。或见食呕吐，憎闻食臭；或腹痛下利
；或大小便秘涩；或胸中冲悸，不欲见光明；或精神昏愦，语言错乱；或壮热头痛；或身体
酷冷疼烦；或觉转筋；或肿；或 腿顽痹；或时缓纵不随；或复百节挛急；或小腹不仁，皆
谓香港脚状貌也。乃至妇人产后取凉，多中此毒，其热闷掣纵，惊悸心烦，呕吐气上，脐下冷
痞， 然不快，兼小便淋沥，不同生平，皆是香港脚之候。顽弱为缓风，疼痛为湿
痹。上件《千金》节文，但备叙诸证，不说阴阳经络所受去处，亦不分风湿寒热四气，及内
脏虚实所因，后学从何为治。若一向信书，不若无书为愈，此之谓也。
治疗风邪侵袭关节，四肢疼痛剧烈，如同被锤击锻造般难以忍受。
附子（炮制，去皮和脐） 干姜（炮制） 芍药 茯苓 甘草（炙烤） 桂心（各三两） 白术（四两） 人参（三两）
以上药材切碎成散剂。每次服用四大钱，加水二盏，煎煮至七分满，滤去药渣，饭前服用。另一版本方剂，去掉桂心，改用干地黄二两。
此方最擅长治疗节风。近代人使用它非常有效。也用于治疗腰背痛，以及香港脚流注。（该方见腰痛门）
中风寒暑湿邪，与香港脚，其发病有突然与渐进、浅表与深重的不同。感受风寒暑湿邪气，发病突然且病位较浅；香港脚发病渐进且病位较深，因为它随着脏腑之气的虚实寒热而发动，所以以“气”命名。其邪气如沿着经络进入腑脏，证候虽然不一，但三阳经多表现为热躁，三阴经多表现为热烦，也可以据此类推。只是香港脚不专门由某一种邪气引起，也不专门局限于某一条经络，所以与中风寒暑湿有所不同。兼有随后产生的各种疾病，混杂繁多，不容易分辨。治疗时，必须寻找其经络病证所在的部位，然后通过脉象来察辨虚、实、浅、深，从而进行治疗。假如是三阳经，诊脉多在足外踝及手背处；三阴经，诊脉多在足内踝及手臂内侧。以此粗略区分阴阳，就可以知道大概情况了。至于风寒暑湿，其性质和作用各不相同，所谓风邪致病游走不定，寒邪致病疼痛，暑邪致病顽固，湿邪致病重着粘滞，这是不可更改的定论。《千金方》的论述，与董氏的家传学说，大多沿袭旧说，似乎难以作为依据。只有留心钻研医学之道的人，必定会有最恰当的理论。
《千金方》论述香港脚，都是由感受风毒所致，大多不会让人立即察觉，往往因为其他疾病，才引发发作。或者突然感到极度闷乱，经过两三天，才发觉异常。庸医不认识，胡乱当作其他杂病治疗，没有不导致死亡的。因为刚开始感觉非常轻微，饮食嬉戏，气力如常，只有突然起身时脚部屈伸无力是异常罢了。等到论述风毒的相貌时说，有的人脚部未觉异常，而头、颈、臂、膊，已经有所痛苦；身体各处都还不知道有问题，而心腹五脏六腑，已经受到困扰。或者看见食物就呕吐，厌恶闻到食物的气味；或者腹痛腹泻；或者大小便秘结涩滞；或者胸中冲撞悸动，不想见到光亮；或者精神昏沉糊涂，言语错乱；或者高热头痛；或者身体酷冷疼痛烦扰；或者觉得肌肉抽搐；或者肿胀；或者小腿顽麻痹痛；或者时而松弛不能随意运动；或者全身关节挛急；或者小腹麻木无知觉，都称为香港脚的症候表现。甚至妇女产后贪凉，多感染此毒，出现热闷掣纵，惊悸心烦，呕吐气逆，脐下冷痞，心中郁郁不快，兼有小便淋沥不尽，不同于平素状态，都是香港脚的征候。顽弱无力属于缓风，疼痛属于湿痹。上述《千金方》的节选文字，只是详细叙述了各种证候，没有说明阴阳经络受病的部位，也没有区分风湿寒热四种邪气，以及内脏虚实的原因，后学者根据什么来治疗呢？如果一味相信书本，那不如没有书好，说的就是这个道理。
To treat wind pathogen invading the joints, causing severe pain in the four limbs, as if beaten by a hammer or forged, unbearable.
Fuzi (Prepared Aconiti Lateralis Radix, peeled and navel removed) Ganjiang (Prepared Zingiberis Rhizoma) Shaoyao Paeoniae Radix Fuling Poria Gancao (Honey-fried Glycyrrhizae Radix et Rhizoma) Guixin Cinnamomi Ramulus (each 3 liang) Baizhu Atractodis Rhizoma (4 liang) Renshen Ginseng Radix (3 liang)
The above are crushed into a coarse powder. Take 4 qian per dose, add 2 zhan of water, decoct until reduced to 7/10, strain off the dregs, and take before meals. Another prescription removes Guixin and uses Dihuang 2 liang.
This formula is most effective for treating Jiefeng (Joint Wind). It is widely used by modern practitioners with great efficacy. It also treats lower back and leg pain, as well as Hongkongjiao Liuzhu (Hong Kong Foot Flowing Accumulation) (See the Lower Back Pain section for the formula).
Wind, cold, summer-heat, and dampness, and Hongkongjiao differ in their onset (sudden vs. gradual) and depth (superficial vs. deep). Contracting wind, cold, summer-heat, and dampness results in sudden onset and superficial location; Hongkongjiao develops gradually and penetrates deeply, as it is triggered by the deficiency/excess and cold/heat of the Zang-Fu Qi, hence named after "Qi". The pathogen may follow the meridians into the Fu and Zang organs. Although the manifestations vary, San Yang (Three Yang) meridians often present with heat and restlessness, while San Yin (Three Yin) meridians often present with heat and vexation, which can be inferred analogously. However, Hongkongjiao is not exclusively caused by one type of pathogen, nor confined to a single meridian, thus differing from wind-cold-summerheat-dampness. Accompanying various subsequent diseases are mixed and complex, making differentiation difficult. Treatment requires identifying the meridian pathology and its location, then using pulse diagnosis to assess deficiency/excess and depth/shallowness to guide therapy. For example, in San Yang meridians, pulse diagnosis is often performed at the lateral malleolus and dorsum of the hand; in San Yin meridians, at the medial malleolus and inner arm. This rough distinction of Yin and Yang reveals the general picture. Regarding wind, cold, summer-heat, and dampness, their natures and effects differ: wind causes wandering pain, cold causes pain, summer-heat causes stubbornness, and dampness causes heaviness and sticking. These are established principles. The discussions in *Qianjin Fang* (Prescriptions Worth a Thousand Gold) and Dong's family tradition largely repeat old theories and seem unreliable. Only those who diligently study medicine will arrive at the most appropriate theories.
*Qianjin Fang* states that Hongkongjiao is caused by contracting wind toxin. It often goes unnoticed initially, only manifesting when triggered by other illnesses. One might suddenly feel extreme oppression and confusion, realizing the abnormality only after two or three days. Incompetent physicians, failing to recognize it, mistakenly treat it as trivial ailments, leading to death. Initially, symptoms are subtle; diet, play, and energy remain normal, except for weakness and difficulty flexing the legs upon sudden standing. Describing the appearance of wind toxin: some have no foot abnormalities but suffer from head, neck, arms, and shoulders; internal organs (heart, abdomen, five viscera) are distressed while external areas seem fine. Symptoms include vomiting upon seeing food or smelling odors, abdominal pain with diarrhea, constipation, chest palpitations and aversion to light, mental confusion and disordered speech, high fever and headache, body coldness with painful irritability, muscle cramps, swelling, numbness and bi-syndrome in the calves, flaccidity and loss of motor control, joint spasms, or numbness in the lower abdomen. All these are considered signs of Hongkongjiao. Even postpartum women exposed to cold often contract this toxin, presenting with heat, oppression, spasms, palpitations, vexation, vomiting, qi rebellion, cold stagnation below the umbilicus, depression, dysuria, and deviations from normal state—all are signs of Hongkongjiao. Flaccidity belongs to Huanfeng (Sluggish Wind), and pain belongs to Shibi (Damp-Bi). The excerpt from *Qianjin Fang* merely lists symptoms without specifying the affected Yin/Yang meridians, distinguishing between wind/damp/cold/heat pathogens, or explaining the role of Zang-Fu deficiency/excess. How should students treat it? Blindly trusting books is worse than having no books at all; this is what is meant.