诸痛忌补，香港脚痛尤甚。名曰壅疾，壅者，湿气堵截经络之谓，顾其名可以思其义。有为寒湿壅者，人
迹板桥（温庭筠诗∶“鸡声茅店月，人迹板桥霜”），身历冰霜之惨；江深草阁（杜甫诗∶“五月江深草阁寒
”），泥多滑 之侵。冷凄之气，下注为湿，浸淫筋骨，昼夜憎寒作痛，其脉濡而迟。非苍术、加皮，不足以
燥劳筋之湿；非干姜、附子，不足以祛切骨之寒（经验方∶苍术、加皮、羌活、防风、防己、附片、干姜、秦
归、苡米、木瓜、炙草、大枣）。有为湿热壅者，餐瓜嗜果，惟贪口腹之甘，旨酒嘉肴，罔顾肺肠之腐。薰蒸
之气，下流为湿，煎熬阴血，临夜发热而痛，其脉濡而数。惟淮通、苏梗，庶可以疏闭塞之经；惟黄柏、麦冬
、庶可以清蕴隆之热（经验方∶淮通、苏梗、黄柏、麦冬、生赤皮、秦归、羌活、防风、苡米、木瓜、炙草）。
有为风湿壅者，湿郁为热，热则生风。其痛也，走注无常，辄肆其毒，中于踝，肿则载涂若跣（《书·说命
》∶若跣，弗视地，厥足用伤”）；中于胫，伸则 痛如刀；中于膝，形则盖大如鹤。其脉濡浮而数。必也大黄芒
硝退其火，而风斯息；防风、羌活散其风，而湿乃除（经验方∶大黄、芒硝、羌活、防风、秦归、生地、牛膝
、淮通、炙草、姜枣引）。斯三者，本非废疾，而多致成废疾者，补误之也。跛倚以为容（《礼记》有司跛
倚以临祭），许多书斋秀士；蹒跚不自便（《史
记》∶“子苦蹒跚”。言足欲进而趑趄也），偏及绣阁名姝。究其受害之由，无非流俗所尚温补医者之所为也。
外有一种蜷缩枯细，不肿而痛，名曰干香港脚痛，有润血清燥之方。又有一种足跟作痛， 肿而红，名曰阴虚
脚痛，有补肾养营之剂。验其症，或肿或痛；审其脉，为涩为细，可考而知，与湿有大不相侔者。治是症者，
勿借口斯二症而任意补之也可。
各种疼痛都忌讳使用补法，香港脚（足部肿痛之病）的疼痛更是如此。这种病被称为“壅疾”，所谓“壅”，是指湿气阻滞经络的意思，看它的名字就可以推知它的含义。
有的是因寒湿阻滞所致，患者如同温庭筠诗句中所写的“鸡声茅店月，人迹板桥霜”那样，亲身经历了冰霜的凄惨；又如同杜甫诗句中描述的“五月江深草阁寒”，遭受泥泞湿滑的侵袭。寒冷凄清之气，向下注渗成为湿气，浸淫筋骨，导致白天黑夜都怕冷且疼痛，其脉象濡缓而迟。此时非用苍术、五加皮不足以燥除劳损筋骨的湿气；非用干姜、附子不足以祛除刺骨的寒冷。（经验方：苍术、五加皮、羌活、防风、防己、附片、干姜、当归、薏苡仁、木瓜、炙甘草、大枣）。
有的是因湿热阻滞所致，贪吃瓜果水果，只图口腹之欲的甘甜；美酒佳肴，不顾肺肠的腐败。熏蒸之气，向下流注成为湿气，煎熬阴血，导致夜间发热且疼痛，其脉象濡缓而数。此时只有淮通、紫苏梗，才可以疏通闭塞的经络；只有黄柏、麦冬，才可以清除蕴积隆盛的热邪。（经验方：淮通、紫苏梗、黄柏、麦冬、生赤芍、当归、羌活、防风、薏苡仁、木瓜、炙甘草）。
有的是因风湿阻滞所致，湿气郁结化为热，热极则生风。这种疼痛，游走不定，肆意发作毒害，若病发于脚踝，肿胀则满地皆是，如同光脚走路不看地面，致使双足受伤；若病发于小腿，伸展时疼痛如刀割；若病发于膝盖，形态则膝盖肿大如鹤膝。其脉象濡浮而数。必须用大黄、芒硝退去火邪，风气才能平息；用防风、羌活疏散风邪，湿气才能去除。（经验方：大黄、芒硝、羌活、防风、当归、生地、牛膝、淮通、炙甘草，以生姜、大枣为引）。
这三种情况，本来不是废疾，但大多因此变成废疾的，是因为误用了补法。就像《礼记》中提到的有司官员跛行倚靠来祭祀一样，许多书斋里的秀士变得步履蹒跚不自在；又像《史记》中说的“子苦蹒跚”，形容脚想前进却趑趄不前，这种情况甚至波及到绣阁中的名姝。究其受害的原因，无非是受世俗崇尚温补的医者所害。
另外有一种蜷缩枯细，不肿但疼痛的情况，名叫干性香港脚痛，有润血清燥的方剂。又有一种足跟作痛，红肿的情况，名叫阴虚脚痛，有补肾养营的药剂。验证其症状，或肿或痛；审察其脉象，为涩或细，可以考证而知，这与湿邪引起的病症大不相同。治疗这些病症的人，不要借口说这是上述两种病症而任意使用补法啊。
Pain in general contraindicates the use of tonification, and this is especially true for Hong Kong Foot (a disease characterized by swelling and pain in the feet). It is named "Yong Ji" (Obstructive Disease); "Yong" refers to the obstruction of meridians and collaterals by dampness. One can deduce its meaning from its name.
There are cases caused by cold-dampness obstruction. The patient suffers as if walking on a frosty bridge at dawn ("Chicken crow, thatched inn, moon; human footprints on the frosty plank bridge"), experiencing the misery of ice and frost; or as if dwelling in a deep river pavilion in May ("In May, the river runs deep, the grass hut is cold"), suffering invasion from mud and slippery dampness. Cold and desolate qi descends and transforms into dampness, soaking into the sinews and bones, causing aversion to cold and pain day and night. The pulse is soggy (Ru) and slow (Chi). Only Cang Zhu (Atractylodis Rhizoma) and Wu Jia Pi (Acanthopanacis Cortex) are sufficient to dry the dampness afflicting the sinews; only Gan Jiang (Zingiberis Rhizoma) and Fu Zi (Aconiti Lateralis Radix Praeparata) are sufficient to dispel the bone-penetrating cold. (Empirical Formula: Cang Zhu, Wu Jia Pi, Qiang Huo, Fang Feng, Fang Ji, Fu Pian, Gan Jiang, Dang Gui, Yi Mi, Mu Gua, Zhi Cao, Da Zao).
There are cases caused by damp-heat obstruction. The patient indulges in melons and fruits, craving only the sweetness of taste; enjoys fine wines and delicacies, disregarding the corruption of the lungs and intestines. The steaming qi flows downward to become dampness, boiling the yin blood, leading to fever and pain at night. The pulse is soggy (Ru) and rapid (Shu). Only Huai Tong (Gardeniae Fructus processed specifically for clearing heat/dampness contextually often referring to specific preparations or similar herbs like Tu Fu Ling in some contexts, but here likely referring to a specific preparation or herb like 木通/Akebiae Caulis or similar diuretic, WHO term may vary based on specific identification, assuming standard diuretic/heat-clearing context) and Su Geng (Perillae Caulis) can unblock the obstructed meridians; only Huang Bo (Phellodendri Cortex) and Mai Dong (Ophiopogonis Radix) can clear the accumulated and flourishing heat. (Empirical Formula: Huai Tong, Su Geng, Huang Bo, Mai Dong, Sheng Chi Shao, Dang Gui, Qiang Huo, Fang Feng, Yi Mi, Mu Gua, Zhi Cao).
There are cases caused by wind-dampness obstruction. Dampness stagnates and transforms into heat; when heat is excessive, it generates wind. This pain wanders without fixed location, releasing its toxicity arbitrarily. If it strikes the ankle, swelling covers the ground as if one were barefoot and not watching the ground, injuring the feet; if it strikes the shin, extension causes pain like a knife cut; if it strikes the knee, the shape becomes swollen like a crane's knee (He Xi). The pulse is soggy-superficial (Ru Fu) and rapid (Shu). One must use Da Huang (Rhei Radix et Rhizoma) and Mang Xiao (Natrii Sulfas) to retreat the fire, so the wind will subside; use Fang Feng (Saposhnikoviae Radix) and Qiang Huo (Notopterygii Rhizoma et Radix) to scatter the wind, so the dampness will be eliminated. (Empirical Formula: Da Huang, Mang Xiao, Qiang Huo, Fang Feng, Dang Gui, Sheng Di, Niu Xi, Huai Tong, Zhi Cao, with Jiang and Zao as guides).
These three types are originally not disabling diseases, but many become disabling due to erroneous tonification. Just as officials might stand crookedly during sacrifices, many scholarly gentlemen become lame and awkward; just as recorded in the Records of the Grand Historian regarding hesitation, even beautiful women in inner chambers may suffer. Investigating the cause of their harm, it is nothing other than the result of physicians who follow the vulgar trend of warm-tonification.
Additionally, there is a condition where the limbs are curled, withered, and thin, painful but not swollen, named Dry Hong Kong Foot Pain, which has formulas to moisten blood and clear dryness. There is another condition where the heel hurts, is swollen and red, named Yin Deficiency Foot Pain, which has agents to tonify the kidney and nourish the nutritive qi. Verify the symptoms: either swelling or pain; examine the pulse: either choppy (Se) or fine (Xi), which can be known through investigation. These differ greatly from diseases caused by dampness. Those treating these conditions should not use the excuse of these two syndromes to arbitrarily apply tonification.