香港脚痹挛者，寒气多也。寒则筋急，热则纵；寒则脉闭，热则流。寒搏于筋脉则挛痹不
能转移，艰于步履，甚则不可屈伸也。
肉苁蓉丸
苁蓉 牛膝 天麻 黄 首乌 木瓜（各十两，酒五斤浸一日，晒入后药） 狗脊 续
断萆 （各三两）
共末，用木瓜三枚剜空，入青盐一两，闭口饭上蒸研成膏，入上件和丸，如干加酒，糊
丸梧子大，盐汤酒任下三十丸。
石南丸 香港脚挛痹，去风湿，活血络，益元气。
石南 白术 牛膝（同上酒浸） 天麻 防风 枸杞 黄 （二两） 鹿茸 桂枝（一两五
钱）
共为末，用木瓜一枚，去皮瓤蒸烂，捣膏入糊丸梧子大，酒下三五十丸。
《杨氏家藏方》 治寒湿香港脚，腿膝疼痛，行步乏力。
胡芦巴酒浸一宿，焙，破故纸炒香各四两为末，以木瓜切顶去瓤，安药在内，令满，用
顶合住签之，烂蒸捣丸梧子大，每服七十丸，空心温酒下。
脚膝肿痛者，风寒温气客于气血，不能宣通，则壅滞为肿，凝涩为痛。人之气血，得温
则行
，遇寒则止故也。又邪气国中，但在于下而未及乎上，所谓伤于湿者，下先受之也。疏导其
下，固护其中，法斯善矣。
防己汤
防己 猪苓 郁李仁 槟榔 木通 枳壳 紫苏（五钱） 赤茯苓 炙草（一两）
姜水煎四钱。一方有白术。
经验加味二妙丸 治两脚湿痹疼痛，或如火燎，从足跗热起，渐至腰胯，或麻痹
痿软，皆是湿热为病，此药主之。
苍术（四两，米泔浸） 黄柏（二两，酒浸晒干） 川牛膝（一两，去芦） 防己 当归尾
川萆 龟板（酥炙，各一两）
上为细末，酒煮面极熟，糊丸如梧子大，每一百丸，空心姜盐汤下。
槟榔散 治风毒香港脚肿痛。
橘叶 杉木节（各一握）
上用童子尿一盏，醇酒半盏，煎六分，滤清，乘热调槟榔末二钱。（《仁斋》）
香港脚痹挛，多由寒气所致。寒邪导致筋脉拘急，热邪则使筋脉弛缓；寒邪使脉道闭塞，热邪则使气血流行。寒邪搏结于筋脉，会导致筋脉拘挛、麻木，肢体不能随意转动，行走困难，严重时甚至无法屈伸。
肉苁蓉丸
肉苁蓉、牛膝、天麻、黄芩、何首乌、木瓜（各十两，用五斤酒浸泡一天，晒干后加入后续药物）、狗脊、续断、萆薢（各三两）。
以上药物研为细末，取三个木瓜挖空，放入一两青盐，封口后在饭上蒸熟，研磨成膏状，加入上述药粉混合制成丸剂。如果药粉太干可加酒，用米糊制作如梧桐子大小的丸剂，服用时可用淡盐水或酒送服三十丸。
石南丸
主治香港脚引起的筋脉拘挛和麻木，具有祛除风湿、活血通络、补益元气的作用。
石南叶、白术、牛膝（同上法用酒浸泡）、天麻、防风、枸杞、黄芩（二两）、鹿茸、桂枝（一两五钱）。
以上药物研为细末，取一个木瓜，去皮去瓤后蒸烂，捣成膏状，加入米糊制成如梧桐子大小的丸剂，每次服用三五十丸，用酒送服。
《杨氏家藏方》
治疗寒湿型香港脚，症状为腿膝疼痛，行走乏力。
葫芦巴用酒浸泡一夜，焙干；破故纸（补骨脂）炒香。两者各四两研为细末。将木瓜切去顶部并挖去瓤，把药粉填入其中直至填满，盖上顶部并用签子固定，蒸烂后捣碎制成如梧桐子大小的丸剂。每次服用七十丸，空腹时用温酒送服。
脚膝肿痛，是由于风寒湿热之邪侵袭气血，导致气血不能宣通，从而壅滞形成肿胀，凝涩形成疼痛。这是因为人的气血，遇到温暖则运行通畅，遇到寒冷则停滞不前。此外，邪气侵犯人体，若仅在下部而未波及上部，这就是所谓的“伤于湿者，下先受之”。因此，疏导下部的气血，固护中焦脾胃，是较好的治疗方法。
防己汤
防己、猪苓、郁李仁、槟榔、木通、枳壳、紫苏（五钱）、赤茯苓、炙甘草（一两）。
用生姜水煎煮，每次服用四钱。另一版本方剂中含有白术。
经验加味二妙丸
治疗双脚湿痹疼痛，感觉如火烧般灼热，热度从足背升起，逐渐蔓延至腰胯部位，或者出现麻痹、痿软无力等症状，这些都是湿热致病，此药主治此类病症。
苍术（四两，用米泔水浸泡）、黄柏（二两，用酒浸泡后晒干）、川牛膝（一两，去掉芦头）、防己、当归尾、川萆薢、龟板（用酥油炙烤，各一两）。
以上药物研为细末，用酒煮面至极熟，制成糊状，再做成如梧桐子大小的丸剂。每次服用一百丸，空腹时用姜盐汤送服。
槟榔散
治疗风毒型香港脚引起的肿痛。
橘叶、杉木节（各一握）。
以上药物用一盏童子尿、半盏醇酒，煎煮至剩余六分，滤去渣滓澄清，趁热调入二钱槟榔粉末服用。（出自《仁斋直指方论》）
Hongjiao (Gout) with Bi syndrome and spasms is mostly caused by Cold pathogen. Cold causes tendons to contract, while Heat causes them to relax; Cold obstructs the vessels, while Heat promotes flow. When Cold combines with the tendons and vessels, it leads to spasms and numbness, making movement difficult, walking arduous, and in severe cases, flexion and extension impossible.
Roucongrong Wan (Cistanche Pill)
Cistanche Herba (Roucongrong), Achyranthes Root (Niuxi), Gastrodia Rhizome (Tianma), Scutellaria Root (Huangqin), Polygonum Multiflorum Root (Shouwu), Quince Fruit (Mugua) (each 10 taels, soaked in 5 jin of wine for one day, then dried before adding subsequent herbs), Drynaria Rhizome (Gouji), Dipsacus Root (Xuduan), Dioscorea Hypoglauca Rhizome (Bixie) (each 3 taels).
Grind all into fine powder. Take three quinces, hollow them out, insert 1 tael of Green Salt, seal the opening, steam over rice until cooked, grind into a paste, mix with the above powder, and make pills. If too dry, add wine. Make pills the size of wu-tzu seeds. Take 30 pills with salt water or wine as desired.
Shinan Wan
Indicated for Hongjiao with spasms and numbness, it dispels Wind-Damp, invigorates blood and unblocks collaterals, and benefits Yuan Qi.
Euryale Seed? No, Erythroxylum? No, *Rhododendri Daurici Folium* (Shinan Ye), Atractylodes Macrocephala Rhizome (Baizhu), Achyranthes Root (Niuxi) (soaked in wine as above), Gastrodia Rhizome (Tianma), Saposhnikovia Root (Fangfeng), Lycium Fruit (Gouqi), Scutellaria Root (Huangqin) (2 taels), Deer Antler Glue? No, Deer Antler (Lurong), Cinnamon Twig (Guizhi) (1 liang 5 qian).
Grind all into fine powder. Take one quince, peel and remove pulp, steam until soft, mash into a paste, mix with flour paste to make pills the size of wu-tzu seeds. Take 30-50 pills with wine.
*Yang's Family Preserved Formulas*
Treats Cold-Damp Hongjiao, characterized by pain in legs and knees, and weakness in walking.
Legume Seed? No, *Trigonella Foenum-graecum* Seed (Huluba), soaked in wine overnight, baked; Psoralea Fruit (Poguzhi), stir-fried until fragrant. Each 4 taels, ground into powder. Cut the top off a quince, remove pulp, fill with medicine until full, replace the top, secure with a skewer, steam until soft, mash and make pills the size of wu-tzu seeds. Take 70 pills each time, with warm wine on an empty stomach.
Swelling and pain in feet and knees occur when Wind-Cold-Warm pathogens invade Qi and Blood, preventing their smooth circulation, leading to stagnation causing swelling and coagulation causing pain. This is because human Qi and Blood flow when warmed and stop when chilled. Furthermore, when pathogens invade the body but remain only in the lower part without reaching the upper part, this is referred to as "those injured by Dampness are first affected below." Therefore, dredging the lower part and protecting the middle part is the proper method.
Fangji Tang
Stephania Root (Fangji), Polyporus (Zhuling), Prunus Seed (Yuliren), Areca Seed (Binglang), Akebia Stem (Mutong), Bitter Orange (Zhiqiao), Perilla Leaf (Zisu) (5 qian), Red Poria (Chifuling), Honey-fried Licorice Root (Zhigancao) (1 liang).
Decoct with ginger water, take 4 qian per dose. Another version includes Atractylodes Macrocephala Rhizome (Baizhu).
Empirical Modified Ermiao Wan
Treats painful damp-Bi in both feet, feeling like burning fire, starting from the dorsum of the foot and spreading to the waist and hips, or presenting with numbness and flaccidity. These are all diseases caused by Damp-Heat, which this formula treats.
Coix Seed? No, *Atractylodes Lancea* Rhizome (Cangzhu) (4 taels, soaked in rice wash water), Phellodendron Bark (Huangbai) (2 taels, soaked in wine and sun-dried), Cyathula Root? No, Achyranthes Bidentata Root (Chuanniuxi) (1 liang, remove rhizome), Stephania Root (Fangji), Angelica Sinensis Root Tail (Dangguiwei), Dioscorea Hypoglauca Rhizome (Bixie), Turtle Shell (Guiban) (roasted with su, each 1 liang).
Grind all into fine powder. Cook flour thoroughly with wine to make a paste, form pills the size of wu-tzu seeds. Take 100 pills with ginger-salt water on an empty stomach.
Binglang San
Treats swelling and pain in Hongjiao caused by Wind-Toxin.
Tangerine Leaf (Juye), Bamboo Joint? No, Cedar Wood Node (Shanmu Jie) (each one handful).
Decoct one cup of urine from an uncircumcised boy and half a cup of strong wine until reduced to six parts. Filter clear, and while hot, mix with 2 qian of Areca Seed (Binglang) powder. (*Renzhai*)