香港脚疮在足膝生，湿热相搏风气乘，壮热肿痛津黄水，心神烦躁犀角灵。
【注】此证生于足膝，由湿热内搏，滞于肤腠，外为风乘，不得宣通，故令脚膝生疮，
痒痛作肿，破津黄水，形类黄水疮，惟身体壮热，心神烦躁，经久难瘥。宜服犀角散，外
以漏芦汤洗之，兼敷龙骨散甚效。
\r香港脚疮图\p04-34a228.bmp\r
犀角散
犀角屑 天麻 黄 枳壳（麸炒） 白鲜皮 黄芩 防风 羌活 白蒺藜（各七钱五分）
槟榔（一两） 乌梢蛇（酒浸，二两） 甘草（炙，五钱）
上研粗末，每服八钱，水一盅半，生姜五片，煎一盅，去渣，不拘时温服。
【方歌】犀角散医香港脚疮，天麻 枳白鲜榔，乌蛇芩草风羌活，蒺藜粗末引加姜。
漏芦汤
漏芦 甘草生 槐白皮 五加皮 白蔹（各一两五钱） 白蒺藜（四两）
共为粗末，每用五两，水八碗，煎五碗，去渣，淋洗。
【方歌】漏芦汤甘槐白皮，五加白蔹白蒺藜，香港脚疮疼痒津水，熬汤洗患散湿急。
龙骨散
白龙骨（研） 轻粉（各二钱五分） 槟榔（研一钱） 猪粪（新瓦上焙干，再入火
中烧之存性，取出研末，五钱）
共研匀，先以口含荠水或温盐汤，洗令疮净见肉；却用香油调药，随疮大小敷之。未
愈再敷。
【方歌】龙骨散能去湿腐，香港脚疮敷自然无，轻榔猪粪香油入，久远恶疮用亦除。
香港脚疮（一种发生于足膝部位的疮疡）生于足部和膝盖，是由于湿热内蕴相互搏结，又受风邪侵袭所致。临床表现为高热、肿胀疼痛，渗出黄色液体，伴有心神烦躁不安，犀角（Rhinoceros Horn）具有疗效。
【注释】此证候发生在足膝部位，由湿热在体内搏结，阻滞于皮肤腠理之间，外部受到风邪乘袭，导致气机不得宣通，因此使足膝生疮，出现瘙痒、疼痛和肿胀，破溃后流出黄色水液，形态类似黄水疮（一种以渗出黄色浆液为特征的皮肤病），但伴有身体壮热、心神烦躁，且病程长久难以痊愈。适宜服用犀角散，外用漏芦汤清洗患处，同时外敷龙骨散，效果显著。
犀角散
犀角屑 天麻 黄芩 枳壳（麸炒） 白鲜皮 黄芩 防风 羌活 白蒺藜（各七钱五分）
槟榔（一两） 乌梢蛇（酒浸，二两） 甘草（炙，五钱）
以上药材研成粗末，每次服用八钱，加水一盅半，生姜五片，煎煮至一盅，去渣滓，不限时间温服。
【方歌】犀角散治疗香港脚疮，包含天麻、枳实、白鲜皮、槟榔，乌梢蛇、黄芩、甘草、防风、羌活，白蒺藜研成粗末，煎药时加入生姜作为引经药。
漏芦汤
漏芦 甘草（生用） 槐白皮 五加皮 白蔹（各一两五钱） 白蒺藜（四两）
共同研成粗末，每次使用五两，加水八碗，煎煮至五碗，去渣滓，淋洗患处。
【方歌】漏芦汤由甘草、槐白皮组成，加上五加皮、白蔹和白蒺藜，用于治疗香港脚疮引起的疼痛、瘙痒和渗液，熬制汤剂清洗患处可迅速散除湿邪。
龙骨散
白龙骨（研细） 轻粉（各二钱五分） 槟榔（研细一钱） 猪粪（在新瓦上焙干，再放入火中烧至存性，取出研成粉末，五钱）
共同研磨均匀，先用口中含荠菜水或温盐水，清洗疮面直至露出新鲜肌肉；然后用香油调和药粉，根据疮口大小进行外敷。未痊愈则继续敷药。
Hong Kong Foot Sores (a type of ulcer occurring on the feet and knees) arise in the foot and knee regions. This condition is caused by the internal entanglement of damp-heat, compounded by wind pathogen invasion. Clinical manifestations include high fever, swelling, pain, exudation of yellow fluid, and mental restlessness; Rhinoceros Horn (Xijiao) is effective.
[Note] This syndrome occurs at the feet and knees. It results from damp-heat clashing internally, stagnating in the skin and interstices (Couli), while being invaded externally by wind pathogens. The qi mechanism fails to circulate freely, leading to sores on the feet and knees. Symptoms include itching, pain, and swelling; upon rupture, yellow fluid oozes out. The appearance resembles Huangshui Chuang (a dermatological condition characterized by yellow serous exudate), but it is accompanied by severe body heat and mental irritability, making it difficult to heal over a long duration. It is advisable to administer Xijiao San (Rhino Horn Powder) internally, wash the affected area with Loulu Tang (Imperata Decoction) externally, and apply Longgu San (Dragon Bone Powder) for significant efficacy.
Xijiao San (Rhino Horn Powder)
Xijiao Xie (Shavings of Rhinoceros Horn), Tianma (Gastrodiae Rhizoma), Huangqin (Scutellariae Radix), Zhike (Aurantii Fructus, stir-fried with bran), Baixianpi (Dictamni Cortex), Fangfeng (Saposhnikoviae Radix), Qianghuo (Notopterygii Rhizoma et Radix), Bijieli (Tribuli Fructus) [each 7.5 qian],
Binglang (Arecae Semen) [1 liang], Wushaoshe (Zaocys), soaked in wine [2 liang], Gancao (Licorice Root), honey-fried [5 qian].
Grind the above ingredients into coarse powder. Take 8 qian per dose, add 1.5 zhong of water and 5 slices of Shengjiang (Fresh Ginger), decoct until 1 zhong remains, strain, and take warm at any time.
[Prescription Verse] Xijiao San treats Hong Kong Foot Sores, containing Tianma, Zhishi, Baixianpi, and Binglang; Wushaoshe, Huangqin, Gancao, Fangfeng, and Qianghuo; Bijieli ground into coarse powder, with Shengjiang added as an guiding agent.
Loulu Tang (Imperata Decoction)
Loulu (Imperatae Radix), Gancao (Licorice Root, raw), Huaibai Pi (Morus Alba Bark), Wujia Pi (Acanthopanacis Cortex), Bailian (Paeoniae Albae Radix) [each 1.5 liang], Bijieli (Tribuli Fructus) [4 liang].
Grind together into coarse powder. Use 5 liang per application, add 8 bowls of water, decoct until 5 bowls remain, strain, and wash the affected area.
[Prescription Verse] Loulu Tang consists of Gancao and Huaibai Pi, combined with Wujia Pi, Bailian, and Bijieli. It treats pain, itching, and exudation in Hong Kong Foot Sores; boiling the decoction to wash the affected area rapidly disperses dampness.
Longgu San (Dragon Bone Powder)
Baigulong (Fossilized Bones, finely ground), Qingfen (Calomelas) [each 2.5 qian], Binglang (Arecae Semen, finely ground) [1 qian], Zhufen (Porci Faeces) [5 qian: dried on a new tile, then calcined in fire until carbonized (Cinxing), and ground into powder].
Grind uniformly. First, rinse the sore with Qiye water (Shepherd's Purse infusion) or warm saline solution until clean flesh is exposed. Then, mix the medicine with Xiangyou (Sesame Oil) and apply according to the size of the sore. Reapply if not healed.
[Prescription Verse] Longgu San removes dampness and necrotic tissue; applying it to Hong Kong Foot Sores leads to natural healing. With Qingfen, Binglang, Zhufen, and Xiangyou, even chronic malignant ulcers can be cured.