夫久 者。是诸 连滞经久不瘥。或暂瘥后复发。或移易三两处。更相应通。故为久
也。
治久 疮。斑蝥丸方。
斑蝥（一两以糯米拌炒米黄为度去头翅足） 伏翼粪（四两微炒） 皂荚花（一两微炒）
上件药。捣罗为末。炼蜜和丸。如梧桐子大。先用皂荚涂酥炙微黄。捣罗为末。用半钱
煎汤。每日空心。下一丸。壮者三（二）丸。其 根并于小便中出。
治久 移易三数处。皆生疮孔者方。
蝙蝠粪（一两半） 白僵蚕（半两） 雄蚕蛾（半两） 乳头香（半两） 蜀茶末（半
两）
上件药。捣细罗为散。敷疮上。以瘥为度。
又方。
乌蛇（一两半酒浸去皮骨炙令微黄） 蒺藜子（三分） 曲头棘针（半两） 马齿苋（三
分墙
上者） 头发（半两烧灰） 雄黄（一分细研） 绯帛（半两烧灰）
上件药。都捣研为末。以酒调。纳疮中。看干。即更着。以瘥为度。
治积年 疮。及一切恶疮救急者。五分帛膏方。
五分帛（各一寸） 乱发〔二分（两）洗令净〕 黄芩（一两） 紫菀（一两洗去苗土）
莨菪子
（一两） 倒钩棘刺（一两） 乳香（二两） 石盐（一两） 黄蜡（二两） 麝香（一两
细研） 黄丹
（七两） 胡粉（
两并胡粉
点少水研令星尽
上件药。各捣研讫。先将酒入于铛中。炼烟少出。即下五分帛乱发。用武火煎发帛消尽
。后
石盐
二三
治 疮多年不瘥。出于胸前或胁肋脚胫间者。无效者。
上取江淮多年破船上泥缝脂灰。不限多少。捣罗为末。以鸡子清和作团。用炭火烧令通
赤。待冷。准前团烧之。如此三遍。即捣细罗成散。入麝香少许。以生油调涂。以瘥为度。
年多
治久 。生九孔者方。
露蜂房（炙黄为末）
上以腊月猪脂和涂于疮孔上。神效。
又方。
上取栀子烧成灰。细研。以羊髓调涂之。
The term "Jiu Gan" (Chronic Parasitic Disease) refers to various parasitic conditions that persist for a long time and do not heal. Some may temporarily heal but then relapse; others may shift between two or three locations, responding to each other. Hence, it is called "Jiu Gan" (Chronic Parasitic Disease).
Formula of Banmao Wan (Cantharides Pill) for treating chronic Gan sores:
Banmao (Cantharis, one tael, stir-fried with glutinous rice until the rice turns yellow, remove head, wings, and feet), Fuyi Fen (Bat guano, four taels, slightly stir-fried), Zaojia Hua (Gleditsia sinensis flower, one tael, slightly stir-fried).
Grind the above ingredients into fine powder. Mix with refined honey to form pills the size of Sophora japonica seeds. First, prepare a decoction by taking half a qian of Gleditsia sinensis pod coated in lard and roasted until slightly yellow, ground into powder, and boiled in water. Take one pill on an empty stomach daily; those with strong constitutions may take two to three pills. The root of the disease will be expelled through urine.
Formula for treating chronic Gan where lesions shift among several locations and all develop sores:
Bianfu Fen (Bat guano, one and a half taels), Bai Jiangcan (White silkworm, half a tael), Xiong Can'e (Male silkworm moth, half a tael), Ruto Xiang (Nipple incense, half a tael), Shu Cha Mo (Shu tea powder, half a tael).
Grind the above ingredients finely and sieve them into a powder. Apply to the sores until healed.
Another formula:
Wushe (Deinagkistrodon acutus, one and a half taels, soaked in wine, skin and bones removed, roasted until slightly yellow), Jili Zi (Tribulus terrestris seed, three fen), Qutou Ji Zhen (Curved thorn needle, half a tael), Machixian (Portulaca oleracea, three fen, preferably from walls), Toufa (Human hair, half a tael, burned to ash), Xionghuang (Realgar, one fen, finely ground), Feibo (Red silk fabric, half a tael, burned to ash).
Grind all ingredients into fine powder. Mix with wine and apply into the sore. Reapply as needed when dry until healed.
Formula of Wufen Bo Gao (Five-Part Silk Ointment) for treating chronic Gan sores over many years and for emergency treatment of all kinds of malignant sores:
Wufen Bo (Five-part silk, one cun each), Luafa (Tangled hair, two fen, washed clean), Huangqin (Scutellaria baicalensis root, one tael), Ziwan (Aster tataricus root, one tael, washed to remove roots and soil), Langdangzi (Datura metel seed, one tael), Daogou Ji Ci (Inverted hook thorns, one tael), Ruxiang (Frankincense, two taels), Shiyan (Rock salt, one tael), Huangla (Yellow beeswax, two taels), Moxiang (Musk, one tael, finely ground), Huangdan (Lead monoxide, seven taels), Hufen (Cerussa/Basic lead carbonate, one tael, mixed with a little water and ground until smooth).
Process each ingredient separately by grinding. First, put wine into a pan and heat until slight smoke appears. Add the five-part silk and tangled hair, and boil over high heat until completely dissolved. Then add... [text missing] ...for treating Gan sores that have not healed for years, appearing on the chest, hypochondrium, or calves, which are ineffective against this method.
For the above, take mud-seal grease ash from old broken boats in the Jianghuai region, in any quantity. Grind into fine powder. Mix with egg white to form dough balls. Burn over charcoal until red-hot. Let cool, then burn again in the same manner. Repeat this process three times. Finally, grind finely and sieve into powder. Add a small amount of Musk. Mix with raw oil and apply topically until healed.
Formula for treating chronic Gan with nine holes:
Lufengfang (Honeycomb, roasted yellow and ground into powder).
Mix the above with pig fat from the twelfth lunar month and apply to the sores. This is highly effective.
Another formula:
Burn Gardenia jasminoides fruit to ash, grind finely, and mix with sheep marrow for topical application.