凡香港脚肿痛之甚者，可用敷药以散之，或用椒艾囊以温之，或用香散之药煎汤以洗之，
如百草煎，及防风、荆芥、威灵仙、艾叶、苍术、蛇床子、当归、乌药之类，皆可用。或单
用紫苏，或忍冬藤煎汤淋洗之，俱妙。
观《活人》等书云∶凡香港脚服补药，及用汤淋洗者，皆医之所禁也。此亦一偏之说耳。
盖补有宜禁者，以邪壅气实者也；淋洗有宜禁者，以水湿汤气之宜避者也。如果下部虚寒，
或以病后，或以克伐太过，而香港脚不愈者，岂尚堪禁补乎？又若寒邪湿热，壅结不散，而为
肿为痛者，最宜以辛香疏散之药煎汤蒸洗，则退邪极速，岂禁洗乎？惟是湿热气逆而上冲心
腹者，不可骤洗，恐助湿气上升也；此必先降其气，俟其毒止在脚，再行熏洗，自无不利。
盖补以补其弱也，洗以逐其滞也。夫何禁之有。
有当禁于未发之先者，如《外台秘要》云∶第一忌嗔，嗔则心烦，烦则香港脚发。又禁大
语，大语则伤气，气伤病亦发。又不得露足当风入水，以冷水洗足，两足胫尤不宜冷。虽暑
月当着帛 ，至冬寒加绵，常令两胫及腿温暖，微汗尤佳。根据此将息，香港脚自消，而
无邪气留连之患。夏月腠理开，不宜当风取凉，凉处坐卧，须得劳动关节，令其气畅，此拒
邪之法，养生之要也。每食后宜行三五百步，疲倦便止，则脚中恶气随即下散，虽有浮肿，
气亦不上也。
孙真人云∶古人少有此疾，自永嘉南渡，衣冠之人多有之。此皆湿郁于内所致也。故凡
四时之中，皆不得久坐久立湿冷之地，亦不得因酒醉汗出脱衣洗足，当风取凉，皆成香港脚。
暑月久坐久立湿地，则湿热之气蒸人经络，病发必热，而四肢酸疼，烦闷 肿寒热。此
又山野农夫多有之，以久湿伤于外也。
凡是香港脚（足部肿痛之病）症状严重的，可以使用外敷药物来消散肿结，或者用装有花椒和艾叶的香囊来温煦患处，也可以用具有芳香发散作用的药物煎煮汤剂来清洗。例如百草煎，以及防风、荆芥、威灵仙、艾叶、苍术、蛇床子、当归、乌药等药材，都可以使用。或者单独使用紫苏，或者用忍冬藤煎汤淋洗，效果都很好。
查看《活人书》等医籍记载说：凡是治疗香港脚时服用补益药物，以及使用汤剂淋洗的，都是医生所禁忌的。这也是一偏之见罢了。大概补法有应当禁忌的情况，是因为邪气壅盛、正气充实；淋洗有应当禁忌的情况，是因为需要避开水湿热气的影响。如果是下部虚寒，或者是疾病之后，或者是攻伐太过导致香港脚久治不愈的，难道还能禁止使用补法吗？另外，如果是寒邪或湿热之邪，壅结不散，导致肿胀疼痛的，最适宜用辛香疏散的药物煎汤蒸洗，这样退除邪气极快，怎么能禁止清洗呢？只有当湿热之气上逆冲犯心腹时，不可以突然清洗，恐怕会助长湿气上升；这种情况下必须先降逆气，等到毒邪只停留在脚部时，再进行熏洗，自然没有不利之处。补法是用来补益虚弱的，清洗是用来驱逐滞涩的。有什么可禁止的呢？
有应当在疾病未发作之前加以禁忌的情况，如《外台秘要》所说：第一忌讳发怒，发怒则心烦，心烦则引发香港脚。又忌讳大声说话，大声说话则耗伤元气，气受伤则疾病也会发作。又不让双脚暴露在风中或进入水中，用冷水洗脚，两小腿尤其不宜受冷。即使在夏天也要穿着丝织品护腿，到了冬天寒冷时要加上棉絮，常使两小腿及腿部温暖，微微出汗尤其好。按照这样的调摄方法，香港脚自然会消退，而没有邪气留连的祸患。夏季腠理开泄，不应当对着风取凉，在阴凉处坐卧，必须活动关节，使气血通畅，这是抵御邪气的方法，也是养生的关键。每顿饭后可行走三五百步，疲倦了就停止，那么脚中的恶气随即向下消散，即使有浮肿，气也不会向上冲逆。
孙思邈说：古人很少患这种病，自从永嘉年间南渡以来，士大夫阶层中很多人都有此病。这都是因为湿气郁结于体内所致。所以一年四季中，都不应当长时间坐在或站在潮湿寒冷的地方，也不应当因为酒醉汗出后脱衣洗脚、对着风取凉，这些都会导致香港脚。夏季长时间坐在或站在湿地，湿热之气蒸腾侵入经络，发病必定发热，四肢酸痛，烦闷、肿胀、发冷、发热。这又是山野农夫多患此病的原因，是因为长期处于潮湿环境而损伤于外。
In cases where Hongxiangjiao (a disease characterized by swelling and pain in the feet) is severe, external applications can be used to dissipate the swelling, or a sachet containing Zanthoxylum Pericarpium (Huajiao, 花椒) and Artemisia Argyi Folium (Aiye, 艾叶) can be used for warming. Alternatively, decoctions of aromatic dispersing herbs can be prepared for washing. For instance, Baicao Jian (Hundred Herbs Decoction), as well as Saposhnikovia Radix (Fangfeng, 防风), Schizonepeta Spica (Jingjie, 荆芥), Clematis Radix et Rhizoma (Weilingxian, 威灵仙), Artemisia Argyi Folium (Aiye, 艾叶), Atractylodis Rhizoma (Cangzhu, 苍术), Cnidii Fructus (Shechuangzi, 蛇床子), Angelicae Sinensis Radix (Danggui, 当归), and Linderæ Cortex (Wuyao, 乌药), are all suitable. One may also use only Perilla Leaf (Zisu, 紫苏) alone, or decoct Polygoni Multiflori Caulis (Rendongteng, 忍冬藤) for pouring over and washing; both methods are excellent.
According to texts such as *Ren Shu* (*The Book of Living Persons*), it is stated that taking tonifying medicines and using hot water pour-washing for Hongxiangjiao are strictly prohibited by physicians. This is merely a one-sided view. Tonification should be avoided when pathogenic factors are obstructing and Qi is excessive; washing should be avoided when water-dampness vapor needs to be shunned. However, if the lower body is deficient and cold, or if the condition persists after illness or due to excessive purgation, how could tonification still be forbidden? Furthermore, if cold pathogens or damp-heat are congested and not dispersed, causing swelling and pain, it is most appropriate to steam and wash with decoctions of pungent and aromatic dispersing herbs, which removes pathogens rapidly. How can washing be forbidden in this case? Only when damp-heat qi rebels upward to rush into the heart and abdomen should sudden washing be avoided, lest it assist the dampness in rising. In such instances, one must first direct the Qi downward, wait until the toxicity is confined to the feet, and then proceed with fumigation and washing, which will yield no adverse effects. Tonification addresses deficiency, while washing eliminates stagnation. What is there to forbid?
There are prohibitions to observe before an outbreak occurs. As stated in *Waitai Miyao* (*Essential Prescriptions Worth a Thousand Gold for Emergencies*): The first taboo is anger; anger causes mental restlessness, which triggers Hongxiangjiao. Another taboo is loud talking, which damages Qi; when Qi is damaged, the disease may flare up. One must not expose bare feet to wind or enter water, nor wash feet with cold water; the calves are especially susceptible to cold. Even in summer, silk leg wraps should be worn, and in winter, cotton padding added, keeping the calves and legs warm. Slight sweating is particularly beneficial. Following these regimens allows Hongxiangjiao to subside naturally, preventing lingering pathogens. In summer, when pores are open, one should not seek coolness by facing the wind or sitting/lying in cool places. Joint movement is necessary to ensure smooth Qi flow; this is the method to repel pathogens and a key principle of health preservation. Walking three to five hundred steps after each meal, stopping when tired, helps disperse evil Qi from the feet downwards. Even if edema exists, the Qi will not rebel upward.
Sun Simiao said: In ancient times, few people suffered from this disease. Since the southward migration during the Yongjia era, many scholars and officials have suffered from it. This is caused by dampness stagnating internally. Therefore, throughout the four seasons, one must not sit or stand for long periods on wet and cold ground, nor should one remove clothes, wash feet, or face the wind for coolness after drinking alcohol and sweating, as these practices lead to Hongxiangjiao. Sitting or standing on wet ground for long periods in summer allows damp-heat vapor to invade the meridians. The onset involves fever, soreness and pain in the four limbs, mental restlessness, swelling, chills, and fever. This condition is common among rural farmers due to prolonged exposure to external dampness.