此有虫而作痒也。用火炉放瓦一块，撒韭菜子于瓦上，加上麻油，两足向上熏之，用布
围住勿令透风，少刻痒止，有虫落瓦上，即愈。
又方∶痒则用硫黄擦之，擦后，再用硫黄浓敷，布包穿袜，一日一换，数日断根，切不
可用手抓擦。
此湿热而有虫也。轻者用硫黄擦敷，不必抓动，三日自愈，抓则不效。重者先用苦参、
甘草、银花、苍术、生地各三钱，葱头七个，煎水，日洗一次。另用黄丹、明雄、滑石各一
钱，研细如香灰样（不细掺之则痛）敷上，如能勤洗，不敷亦可。再用苡米二两，茯苓一两，
煎服三剂（不可多服），患破烂见骨亦效。如日久不愈，用腿部白油膏必效。两脚总宜平搁，
虽大小便亦不可下地，如下地则必溃烂。最宜忍痒，谨戒抓动，抓动一次，必烂数日，不若
听其生水作脓结痂，七八日后，无不愈也。屡试屡验。如已结痂，切不可洗。又枯矾敷之作
痛，切不可用。
又方∶用陈火腿骨，米泔水漂尽盐味，烧枯研末敷，立效。
又方∶牛牙散（见痈毒诸方）敷之，极为神效。
又方∶平时洗足，将水拭干，迟迟穿袜，即无此患。
真桐油煎热，滴一滴于毛上，毛即脱落，忍痛片时，即愈。
柳叶一把，杏仁三粒，枯矾二钱，共捣烂敷，极效。
又方∶一人脚根肿痛，诸医莫识。徐之才曰∶蛤精疾也。由乘船入海，垂脚水中而得，
为剖出二蛤而愈。
This is itching caused by parasites. Use a stove, place a tile on it, sprinkle Allium tuberosum seeds (Jiucaizi) on the tile, add Sesame oil (Mayou), and steam both feet upward over the heat. Cover with cloth to prevent wind from penetrating. After a short while, the itching stops, and parasites can be seen falling onto the tile; the condition will then heal.
Another prescription: When itching occurs, apply Sulfur (Liuhuang) for rubbing. After rubbing, apply a thick layer of concentrated Sulfur, wrap with cloth, wear socks, and change once daily. The root cause will be eliminated after several days. Do not scratch or rub with hands.
This is damp-heat accumulation with parasitic infection. For mild cases, apply Sulfur for rubbing and dressing; do not scratch. It will self-heal in three days; scratching renders it ineffective. For severe cases, first decoct Sophora flavescens Radix (Kushen), Licorice Root (Gancao), Lonicerae Flos (Yinhua), Atractylodis Rhizoma (Cangzhu), Rehmanniae Radix (Shengdi), each 3 qian, and seven green onion heads (Congtou), in water. Wash once daily. Separately, take Lead monoxide (Hudan), Realgar (Mingxiong), and Talcum (Huashi), each 1 qian, grind into fine powder resembling incense ash (coarse powder causes pain upon application) and apply to the affected area. If frequent washing is maintained, medication application is optional. Additionally, decoct Coix Seed (Yimi) 2 liang and Poria (Fuling) 1 liang, take orally for three doses (do not overdose). Even if the lesion is ulcerated exposing bone, it remains effective. If the condition persists for a long time, applying Leg White Ointment (Tuibu Baiyougao) is highly effective. Both feet should always be kept flat and elevated. Even during urination or defecation, feet must not touch the ground; otherwise, ulceration is inevitable. One must endure the itching and strictly avoid scratching. Each scratch leads to days of ulceration. It is better to allow serous fluid to form, suppurate, and scab over; within seven to eight days, healing invariably occurs. This has been repeatedly tested and verified. Once scabs have formed, do not wash. Additionally, Alum (Kufan) causes pain when applied and must not be used.
Another prescription: Use old ham bones, rinse salt taste away with rice washing water (Mixiangshui), burn until charred, grind into powder, and apply. Immediate effect.
Another prescription: Apply Niuya San (see prescriptions for carbuncles and toxins). Extremely efficacious.
Another prescription: During daily foot washing, dry the feet thoroughly, delay wearing socks, and this affliction will be avoided.
True Tung oil (Zhen Tongyou) heated, one drop applied to hair causes immediate hair fall. Endure pain for a moment, and it heals.
One handful of Willow leaf (Liuye), three Almond kernels (Xingren), 2 qian of Alum (Kufan), pound together into a paste and apply. Highly effective.
Another case: A person suffered swelling and pain in the heel, unrecognized by various physicians. Xu Zhicai stated: This is "Clam Essence Disease" (Gejing Ji). It was contracted by hanging feet in seawater while boarding a ship. Two clams were surgically extracted, and the patient healed.