陈实功曰∶妇人脚丫作痒，乃从三阳风湿下流，凝结不散，故先作痒而后生湿
烂，又或足底弯曲之处痒湿亦然。（《正宗》）
申斗垣曰∶脚丫湿烂乃湿热下注，或热足下水，以致脚丫破烂。如平素湿热盛
者，听其淌水，不须医治，湿热由此外泄，若骤用燥药收干，反助湿热内患也。（《启玄》）
又曰∶久雨淹水，跣足出入于中，脚丫湿烂成疮，疼痛难行，先用矾汤洗拭，再
以密陀僧 赤，置地下去火毒，研极细末掺之，次日即能行走。
胡公弼曰∶凡脚丫初起小泡，作痒溃烂，毒水流注之处，即作痒溃烂出水。此
乃湿气浸淫之证，以神应散治之。（《青囊》）
枯矾散
石膏 轻粉 黄丹（各三钱） 枯白矾（五钱）
研匀，温汤洗净搽药，其痒即止。
又方（《济生》）
五倍子（炒枯，一两） 松香 枯白矾 水银 铅（各五钱，同水银 死） 雄黄（三钱）
上为细末。先用荔枝草煎汤洗过，将此药掺之。
密陀僧散
密陀僧（一两） 石膏 枯白矾（各二钱） 轻粉（一钱）
研细。桐油调搽，湿则干掺。
又方 鹅掌皮焙研细末掺之。香油调敷亦良。
又方 松萝茶叶焙研细末，掺之。
又方 稻草把烧烟熏之。
又方 臭树花煎汤浸洗。
又方 九江矾纸揉软夹脚丫内。
又方
草纸煤 石粉（即妇女匀面扑粉，各等分） 和研细干掺。
Chen Shigong stated: Itching in the interdigital spaces of women is caused by wind-dampness from the three Yang meridians flowing downward, condensing and failing to disperse. Therefore, itching occurs first, followed by dampness and ulceration. Similarly, itching and dampness may occur in the creases of the soles of the feet. (*Waike Zhengzong* / *Standardized Surgery*)
Shen Douyuan stated: Damp ulceration of the interdigital spaces is due to damp-heat pouring downward, or walking barefoot into water while the feet are hot, resulting in broken skin between the toes. For those who naturally have abundant damp-heat, allowing the fluid to drain does not require medical treatment, as the damp-heat is vented outward. If astringent/drying medicines are suddenly used to dry it up, it will instead aggravate internal damp-heat complications. (*Qixuan Mizhi* / *Mystic Principles of Qixuan*)
He also stated: After prolonged rain and flooding, walking barefoot through the water causes the interdigital spaces to become damp, ulcerated, and form sores, making walking painful due to severe pain. First, wash and wipe with Alum Decoction (Fan Tang). Then, use Litharge (Mi Tu Seng, red), placed on the ground to remove fire toxicity, grind it into an extremely fine powder, and sprinkle it on the lesion. Walking can be resumed the next day.
Hu Gongbi stated: When small blisters initially appear in the interdigital spaces, causing itching, ulceration, and weeping of toxic fluid, this is a syndrome of dampness infiltrating and spreading. It should be treated with Shenying San. (*Qingnang Mishuan* / *Secret Transmissions of Qingnang*)
Kufan San (Dried Alum Powder)
Shigao (Gypsum Fibrosum), Qingfen (Calomelas), Huangdan (Lead Tetroxide) (each 3 qian), Kufan (Alumen Exsiccatum) (5 qian).
Grind uniformly. Wash with warm water and apply the powder; the itching will cease immediately.
Another Prescription (from *Jisheng Bacuì* / *Extracts from Jisheng*)
Wubeizi (Galla Chinensis, stir-fried until charred) (1 liang), Songxiang (Pini Resina), Kufan (Alumen Exsiccatum), Shuiyin (Hydrargyrum), Qian (Plumbum) (each 5 qian, ground together with Hydrargyrum until the mercury disappears, known as "dead"), Xionghuang (Realgar) (3 qian).
Grind all into a fine powder. First, wash the area with a decoction of Lizhicao (Plantago asiatica L.), then sprinkle this powder on it.
Mituo Seng San (Litharge Powder)
Mituo Seng (Litharge), Shigao (Gypsum Fibrosum), Kufan (Alumen Exsiccatum) (each 2 qian), Qingfen (Calomelas) (1 qian).
Grind finely. Mix with Tung Oil (Tongyou) for application; if the area is wet, sprinkle the dry powder directly.
Another Method: Roast goose web skin until dry, grind into a fine powder, and sprinkle on the lesion. Applying with Sesame Oil (Xiangyou) is also effective.
Another Method: Roast Songluo tea leaves, grind into a fine powder, and sprinkle on the lesion.
Another Method: Smoke the lesion with burning straw bundles.
Another Method: Soak and wash with a decoction of Choushu flower (likely referring to a specific local plant, literally "stinky tree flower").
Another Method: Soften Jiangjiu Fanzhi (Alum paper from Jiujiang) and place it between the toes.
Another Method:
Caozhimei (Soot from grass paper), Shipen (Face powder used by women) (equal parts). Grind finely and sprinkle dry.