论曰乌癞。初觉皮肤变异。肌腠之间。淫淫跃跃。如虫行动。眼前有物如丝悬布。时发
惊恐。言语错乱。皮肉瘾疹如桃李实。或赤或黑。手足 痹。不知痛所。或脚下痛不可践地。
身
治乌癞 皮丸方
皮（一枚炙令黄） 海蛤（一枚大者炙） 蚺蛇头（一枚炙黄） 虻虫（五枚去翅足
炒） 蛴
斑蝥（十五枚将水蛭亭长斑蝥虻虫四件共享糯米少许同炒米熟为度去米不用） 蜈蚣（一枚
去头足炙） 附子（炮裂去皮脐二枚） 蜘蛛（大者炙三枚） 雷丸（十五枚） 巴豆（七
枚去皮心膜出油） 大黄（锉如半栗醋炒半两） 水银（半两与丹砂同研点醋研令水银星尽）
丹砂（半两研） 桂（去粗皮半两） 射罔（半两） 黄连（去须半两） 石膏（研一两） 蜀
椒（去合口者并目炒半两） 芒硝（生用别研一两） 龙骨（别研半两） 滑石（别研一分）
矾石（枯研一两） 甘遂（一分与芝麻同炒麻熟为度弃麻不用）
上二十七味。捣罗及别研。同拌和令匀。炼蜜丸如梧桐子大。每服熟水下一丸至二丸。
空心临卧各一服。未效加一丸。如小便时。茎中觉痛。是虫已化如涕下也。痛多即止一丸。
痛少
治乌癞。马先蒿散方
马先蒿（不计多少一名马矢蒿一名烂石草细切焙干用）
上一味。捣罗为散。每服一钱匕。用荆芥薄荷汤调下。
治乌癞。浸酒方
苦参根白皮（五斤）
上一味。细锉如麻豆。生绢袋贮。好酒三斗。冬浸七日。夏浸四日。每温饮二合至三合
。日二夜一。渐加至五七合。
治乌癞。露蜂房酒方
露蜂房（五两） 苦参（四斤）
上二味。锉细。用水三斗。煮取一斗五升。去滓浸曲四斤半。炊黍米二斗。如常酝法。
酒熟每服三合至五合。日二夜一。稍增无妨。
治乌癞。葛 草浴方
葛 草（二秤锉细淘） 益母草（一秤锉细淘）
上二味。葛 取篱垣上者。益母取近屋者。用水二石五斗。煮取一石五斗。漉去滓。盆
瓮中浸浴一时辰久。方出着旧布袍。用被衣覆之。又再暖令热。复浸浴一时辰久。方出入温
室。着旧布袍。被衣盖复汗出。勿令见风。明日复作。如入汤后。举身瘙痒不可忍。令傍人
捉手。不令搔动。食顷渐定。后隔三日一浴。其药水经浴两次。即弃之。
治乌癞。雌黄散涂方
雌黄（半两研）
上一味。以米醋和鸡子清如膏。涂疮上。干即更涂。
治乌癞。大腹子膏敷方
大腹（生者二枚如无生者干者亦得）
上一味。用皮全者。勿令伤动。以酒一升浸。缓火熬。令酒尽药干。捣罗为末。炼腊月
猪膏。调和如膏敷之。
Discussion: Wu Lai (Black Leprosy). Initially, there is a sensation of skin alteration. Between the muscle and interstices, there is an itching and tingling sensation, as if insects are moving. Visual hallucinations appear, resembling silk threads hanging in the air. There are frequent episodes of fright and panic, disordered speech, and urticaria-like rashes on the skin and flesh, resembling peach or plum fruits, which may be red or black. The hands and feet experience numbness and bi-syndrome (obstruction), with an inability to locate the specific site of pain. Alternatively, there is severe pain in the soles of the feet, making it impossible to walk on them.
Formula for Treating Wu Lai: Pi Wan (Bark Pill)
Pi (Cortex, one piece, roasted until yellow); Hai Ge (Concha Arcae, one large piece, roasted); Ran She Tou (Head of Python, one piece, roasted until yellow); Meng Chong (Tabanus Fly Larva, five pieces, wings and legs removed, stir-fried); Qi Qiong (Melandrya Larva); Ban Mao (Mylabris Beetle, fifteen pieces; mix Shui Zhi (Hirudo), Ting Chang (likely a variant or typo for another insect, possibly Mantis or similar, but kept as per text context implying insect), Ban Mao, and Meng Chong with a small amount of glutinous rice, stir-fry until rice is cooked, discard rice); Wu Gong (Scolopendra, one piece, head and legs removed, roasted); Fu Zi (Radix Aconiti Lateralis Preparata, cracked, peel and navel removed, two pieces); Zhi Zhu (Araneus, large ones, roasted, three pieces); Lei Wan (Omphalia Lapponica, fifteen pieces); Ba Dou (Seminar Crotonis, seven pieces, peel, heart, and membrane removed, oil expressed); Da Huang (Radix et Rhizoma Rhei, cut into pieces half the size of a chestnut, stir-fried with vinegar, half liang); Shui Yin (Hydrargyrum, half liang, ground together with Dan Sha (Cinnabar), add vinegar and grind until mercury stars disappear); Dan Sha (Cinnabar, half liang, ground); Gui (Ramulus Cinnamomi, coarse bark removed, half liang); She Wang (Aconitum Root Juice/Honeysuckle Poison? Note: She Wang usually refers to processed Aconite juice or similar toxic plant extract, half liang); Huang Lian (Rhizoma Coptidis, whiskers removed, half liang); Shi Gao (Gypsum Fibrosum, ground, one liang); Shu Jiao (Fructus Zanthoxyli, remove closed mouth and eyes, stir-fried, half liang); Mang Xiao (Natrii Sulfas, raw use, separately ground, one liang); Long Gu (Os Draconis, separately ground, half liang); Hua Shi (Talcum, separately ground, one fen); Fan Shi (Alumen, calcined and ground, one liang); Gan Sui (Radix Euphorbiae Kansui, one fen, stir-fried with Sesame until sesame is cooked, discard sesame).
The above twenty-seven ingredients are crushed, sieved, and separately ground, then mixed evenly. Honey is refined and used to make pills the size of Sophora japonica seeds. Take one to two pills each time, swallowed with warm water. Take one dose on an empty stomach and one before bed. If ineffective, increase by one pill. If pain is felt in the urethra during urination, this indicates that the parasites have transformed and are being discharged like mucus. If pain is severe, stop increasing the dose; if pain is mild, continue.
Formula for Treating Wu Lai: Ma Xian Hao San (Pedicularis Powder)
Ma Xian Hao (Pedicularis resupinata, quantity unspecified, also known as Ma Shi Hao or Lan Shi Cao, finely cut and dried by roasting).
The above single ingredient is crushed and sieved into a powder. Take one qian bi (approx. 3-5g) each time, taken down with a decoction of Jing Jie (Schizonepeta) and Bo He (Mentha).
Formula for Treating Wu Lai: Soaked Wine
Ku Shen Gen Bai Pi (White Bark of Sophora Flavescens Root, five jin).
The above single ingredient is finely cut like hemp seeds, stored in a raw silk bag, and soaked in good wine (three dou). Soak for seven days in winter and four days in summer. Drink two to three he (approx. 20-30ml) warmed each time, twice daily and once at night. Gradually increase to five to seven he.
Formula for Treating Wu Lai: Exposed Beehive Wine
Lu Feng Fang (Expositum Nidus Vespae, five liang); Ku Shen (Radix Sophorae Flavescentis, four jin).
The above two ingredients are finely cut. Use three dou of water, boil to obtain one dan five sheng (approx. 1.5 liters), remove dregs, and soak four jin half of yeast. Cook two dou of millet. Brew according to normal methods. When the wine is ready, take three to five he each time, twice daily and once at night. Slight increase is acceptable.
Formula for Treating Wu Lai: Pueraria and Motherwort Bath
Ge Gen Cao (Pueraria Root/Caulis? Text says "Ge [blank] Cao", likely Pueraria Lobata stem or root, two cheng, finely cut and washed); Yi Mu Cao (Leonurus Japonicus, one cheng, finely cut and washed).
The above two ingredients: For Pueraria, select those from fences/walls; for Motherwort, select those near houses. Use two shi five dou of water, boil to obtain one shi five dou. Strain and remove dregs. Soak and bathe in a basin or jar for one shi chen (two hours). Then come out, wear old cloth robes, and cover with quilts/clothes. Reheat the liquid to be warm, and soak/bathe again for one shi chen. Then enter/exit a warm room, wearing old cloth robes, covered with quilts to induce sweating. Avoid wind exposure. Repeat the next day. If after entering the bath, whole-body itching becomes unbearable, have someone hold the hands to prevent scratching. After about one meal time, it will gradually settle. Afterwards, bathe once every three days. Discard the medicinal liquid after two baths.
Formula for Treating Wu Lai: Realgar Powder Application
Ci Huang (Realgar, half liang, ground).
The above single ingredient is mixed with rice vinegar and egg white to form a paste. Apply to the sores. Reapply when dry.
Formula for Treating Wu Lai: Areca Paste Application
Da Fu (Areca Seed/Petiole? Text says "Da Fu", likely Da Fu Pi or Da Fu Zi, fresh two pieces; if not available, dried ones can be used).
The above single ingredient: Use the whole piece with skin, do not damage it. Soak in one sheng of wine. Simmer over low heat until the wine is consumed and the medicine is dry. Crush and sieve into powder. Mix with refined lard from the twelfth lunar month to form a paste. Apply externally.