夫大麻疯者，经谓之疠风，又谓之癞风。乃因其人中气不足，而感天地间阴疠浊恶之邪
；或受风木之化，而风热化虫；或受湿毒于皮毛，而后及营卫；或犯不洁；或因传染，皆得
生虫。盖虫者，厥阴主之，厥阴为风木，主生五虫也，初不为意，而渐久渐多，致不可解救
。先则眉痒而渐脱落，两颧红润，浮肿而痒；渐至两臂皮粗毛落，甚而通身肌肤淫淫作痒难
忍。其毒深入血脉之中，而湿热蕴积于脏腑之内，虫蚀脏腑，沿蛀肌肉，久之精神枯涸，诸
虫聚食，遂传为痨瘵而死。古人谓∶其病有三因五死。三因者，一曰风毒，二曰湿毒，三曰
传染。五死者，一曰皮死，麻木不仁；二曰脉死，血溃成脓；三曰肉死，割切不痛；四曰筋
死，手足缓纵；五曰骨死，鼻梁崩塌。与夫眉落眼盲，唇翻声噎，皆为难治。凡遇此证，初
起速为清散，可保无恙。其或岁月已久，而精神气血未衰，六脉洪大而实，或洪数有力者，
用汗、吐、下三法，分表里攻逐之，使毒瓦斯不得稽留而速化。继服清热解毒、凉血补血，
兼养营益卫之剂，禁用辛燥之品，致耗津精，血耗而助酷烈之势。历考前方，若冯氏之再造
散、醉仙散、陈氏之万灵丹、苦参丸、神应养真丹，诸法已备，学人宗之可也。然患者必须
断酒戒色，忌食发风动气、荤腥盐酱、炙 生冷之物，方为有益，否则无功。慎之慎之！
Leprosy (Dama Feng), referred to in classics as Li Feng, is also known as Lai Feng. It arises because the patient's Middle Qi (vital energy of the middle jiao) is deficient, leading to infection by yin pathogenic qi and turbid, evil pathogens from heaven and earth; or due to transformation by Wind-Wood qi, causing wind-heat to generate parasites; or moisture-toxin invading the skin and hair, subsequently affecting Ying (Nutritive) and Wei (Defensive) qi; or contact with unclean substances; or through contagion, all can lead to the generation of parasites. Generally, the generation of parasites is governed by the Jueyin (Liver/Pericardium) channel, which belongs to Wind-Wood and governs the generation of five types of parasites. Initially disregarded, they gradually increase over time, becoming incurable. Early symptoms include itching of the eyebrows leading to gradual loss, redness and swelling of the malar regions with itching; progressing to rough skin and hair loss on both arms, and eventually generalized pruritus intolerable to bear. The toxin penetrates deeply into the blood vessels, while damp-heat accumulates within the Zang-Fu organs. Parasites erode the Zang-Fu and bore into muscles. Over time, spirit and essence become depleted, parasites feed collectively, transforming into Lao Zhai (consumptive disease) leading to death. Ancients stated: this disease has three causes and five deaths. The three causes are: one, Wind-Toxin; two, Damp-Toxin; three, Contagion. The five deaths are: one, Skin Death, characterized by numbness and insensitivity; two, Vessel Death, characterized by blood ulceration turning to pus; three, Flesh Death, characterized by lack of pain upon cutting; four, Tendon Death, characterized by flaccidity and laxity of hands and feet; five, Bone Death, characterized by collapse of the nasal bridge. Along with eyebrow loss, blindness, everting lips, and hoarse/swallowed voice, these are all difficult to treat. Whenever encountering this syndrome, if treated early with clearing and dispersing methods, safety can be ensured. If the disease has persisted for years, but the patient's spirit, Qi, and Blood have not yet declined, and the six pulses are surging, large, and solid, or surging, rapid, and forceful, employ the Sweating (Han), Vomiting (Tu), and Purgation (Xia) methods to attack and expel from the exterior and interior respectively, preventing the toxin from stagnating and facilitating its rapid resolution. Subsequently administer formulas that clear heat, detoxify, cool blood, nourish blood, and simultaneously tonify Ying and benefit Wei. Strictly avoid acrid-drying substances to prevent consumption of fluids and essence; blood depletion would exacerbate the fierce nature of the pathogen. Reviewing previous prescriptions, such as Feng Shi's Zaizao San (Reconstruction Powder), Zuixian San (Intoxicated Immortal Powder), Chen Shi's Wanling Dan (Myriad Spirits Pill), Kushen Wan (Sophora Root Pill), and Shenyang Zhenzhen Dan (Divine Response Nourishing True Spirit Pill), various methods are already comprehensive; students may follow them. However, patients must abstain from alcohol and sexual activity, and avoid foods that trigger wind and stir up qi, including meat, fish, salt, soy sauce, roasted, and raw-cold items. Only then will it be beneficial; otherwise, it will be ineffective. Exercise utmost caution!