论曰伤寒毒攻手足者，热胜则肿也，热毒之气，客于腑脏，邪结在里，循经而出，注于
四肢，故令人手足烦热赤肿疼痛也。
治伤寒后毒瓦斯攻手足，肿满疼痛，心神烦闷。连翘汤方
连翘（一两） 大黄（半两锉炒） 当归（切焙一两） 木香（半两） 麦门冬（去心
一两焙） 防风（去叉） 羌活（去芦头各半两） 黄芩（去黑心） 犀角屑（各一两） 麝
香（研一钱） 枳壳（锉麸炒去瓤） 恶实（炒各半两
上十二味，粗捣筛，每服五钱匕，用水一盏半，煎至八分，去滓食前温服。
治伤寒后毒瓦斯攻四肢虚肿，及喘息促急。防己丸方
防己（半两） 桑根白皮（锉三分） 葶苈子（炒） 郁李仁（炒各半两） 木通（锉
三分） 赤茯苓（去黑皮） 百合（各半两） 泽漆（炒一分）
上八味，捣罗为末，炼蜜和更捣三五百杵，丸如梧桐子大，每服二十丸，空心煎桑根白
皮汤下。
治伤寒毒瓦斯攻四肢，及胸背虚肿。五香汤方
沉香 木香 薰陆香 鸡舌香（别研各三分） 麝香（研一钱） 白薇（三分） 枳实
（麸炒） 麻黄（去根节） 防风（去叉） 葳蕤 秦艽（去苗土） 独活（去芦头） 甘
草（炙各半两）
上十三味，除五香别捣研外，粗捣筛，每服三钱匕，用水一盏，煎至七分，去滓下五香
末一钱匕，再煎令沸，温服，食前临卧日三服。
治伤寒毒瓦斯攻手足虚肿疼痛甚者。虎杖汤方
虎杖（细锉四两）
上一味，以水一斗，煎至五升，去滓看冷热，以渍手足即瘥，于避风处用。
治伤寒热病后，毒瓦斯攻手足肿满，疼痛欲脱者。苍耳渍手足方
苍耳（五握锉碎）
上一味，捣绞取汁，以渍手足良。
治伤寒后毒瓦斯攻手足虚肿。铅丹膏方
铅丹（半两） 蜡 松脂 乳香（各一两研） 麝香（研一分）
上五味，除松脂蜡外，各别研为末，在瓷器内先炼松脂，次下蜡及铅丹乳香等，慢火煎
少时，候冷摊于绢上，以贴肿处，一切肿毒，并宜贴此膏。
Commentary states: When the pathogenic heat of cold damage (Shanghan) attacks the hands and feet, excessive heat leads to swelling. The qi of heat-toxin lodges in the fu-zang organs; the pathogen knots within the interior, follows the meridians outward, and pours into the four limbs. Thus, it causes the person to experience vexatious heat, redness, swelling, and pain in the hands and feet.
Formula for treating toxic vapors attacking the hands and feet after cold damage, causing swelling, fullness, pain, and mental restlessness: Lianqiao Tang (Forsythia Decoction).
Lianqiao (Forsythiae Fructus, 1 liang); Dahuang (Rhei Radix et Rhizoma, 0.5 liang, sliced and stir-fried); Danggui (Angelicae Sinensis Radix, sliced and baked, 1 liang); Muxiang (Aucklandiae Radix, 0.5 liang); Maimendong (Ophiopogonis Radix, heart removed, baked, 1 liang); Fangfeng (Saposhnikoviae Radix, forked parts removed); Qianghuo (Notopterygii Rhizoma et Radix, rhizome tips removed, 0.5 liang each); Huangqin (Scutellariae Radix, black center removed); Xijiaoxie (Rhinocerotis Cornu Sectiones, 1 liang each); Shexiang (Musk, ground, 1 qian); Zhike (Aurantii Fructus, sliced, bran-fried, pith removed); E'ershi (Arctii Fructus, stir-fried, 0.5 liang each).
The above twelve ingredients are coarsely crushed and sifted. For each dose, take 5 qianbi (approx. 5-7 grams), add 1.5 zhan (approx. 300ml) of water, decoct until reduced to 0.8 zhan, remove the dregs, and take warm before meals.
Formula for treating toxic vapors attacking the four limbs after cold damage, causing deficient swelling, and rapid, difficult breathing: Fangji Wan (Stephania Pill).
Fangji (Stephaniae Tetrandrae Radix, 0.5 liang); Sangbaipipi (Mori Cortex, sliced, 3 fen); Tinglizi (Descurainiae Semen seu Lepidii Semen, stir-fried); Yuliren (Pruni Semen, stir-fried, 0.5 liang each); Mutong (Akebiae Caulis, sliced, 3 fen); Chifuling (Poria Cocos with Red Skin, black skin removed); Baihe (Lilii Bulbus, 0.5 liang each); Zeqi (Euphorbiae Helioscopiae Herba, stir-fried, 1 fen).
The above eight ingredients are crushed, sieved into powder, mixed with refined honey, and pounded three or five hundred times. Form pills the size of Sophora seeds. Take 20 pills per dose, administered on an empty stomach with a decoction of Mori Cortex.
Formula for treating toxic vapors attacking the four limbs, as well as deficient swelling of the chest and back: Wuxiang Tang (Five Fragrances Decoction).
Chenxiang (Aquilariae Lignum Resinatum); Muxiang (Aucklandiae Radix); Xunluxiang (Boswelliae Resina); Jitexiang (Caryophylli Flos, separately ground, 3 fen each); Shexiang (Musk, ground, 1 qian); Baiwei (Cynanchi Atrati Radix, 3 fen); Zhishi (Aurantii Fructus, bran-fried); Mahuang (Ephedrae Herba, roots and joints removed); Fangfeng (Saposhnikoviae Radix, forked parts removed); Weirui (Polygonati Odorati Rhizoma); Qinjiao (Gentianae Macrophyllae Radix, seedlings and soil removed); Duhuo (Angelicae Pubescentis Radix, rhizome tips removed); Gancao (Glycyrrhizae Radix et Rhizoma, honey-fried, 0.5 liang each).
The above thirteen ingredients, except for the five fragrances which are separately crushed and ground, are coarsely crushed and sifted. For each dose, take 3 qianbi, add 1 zhan of water, decoct until reduced to 0.7 zhan, remove the dregs, add 1 qianbi of the five fragrances powder, boil again, and take warm. Take three times daily before meals and before retiring.
Formula for treating severe deficient swelling and pain in the hands and feet caused by toxic vapors attacking them after cold damage: Huzhang Tang (Polygoni Multiflori Caulis Decoction).
Huzhang (Polygoni Multiflori Caulis, finely sliced, 4 liang).
The above single ingredient is decocted in 1 dou (approx. 10 liters) of water until reduced to 5 sheng (approx. 5 liters). Remove the dregs, check the temperature (hot or cold), and soak the hands and feet. It will heal. Use in a wind-sheltered place.
Formula for treating swollen, full, and painfully detached-feeling hands and feet due to toxic vapors attacking them after febrile disease of cold damage: Cang'er Soaking Formula for Hands and Feet.
Canger (Xanthii Fructus, five handfuls, sliced/crushed).
The above single ingredient is crushed, pressed to extract juice, and used to soak the hands and feet. This is effective.
Formula for treating deficient swelling of the hands and feet caused by toxic vapors attacking them after cold damage: Qiandan Plaster.
Qiandan (Lithargyrum, 0.5 liang); La (Beeswax); Songzhi (Pinus Resin); Ruxiang (Boswelliae Resina, 1 liang each, ground); Shexiang (Musk, ground, 1 fen).
The above five ingredients, excluding Songzhi and La, are separately ground into powder. First, refine Songzhi in a porcelain vessel. Then add La, Qiandan, Ruxiang, etc. Simmer over low heat for a short time. Allow to cool, spread onto silk cloth, and apply to the swollen area. This plaster is suitable for all types of swelling and toxicity.