凡疽发于胫，名曰兔啮疮。一名血实疮。又随月生死。盖月食之类，非胫疮也。寻此疮
，亦风湿搏于血气，血气实热所生，故一名血实。又名兔啮者，亦当以其形状似于兔啮，因
血疮者，云诸患风湿搏血气而生疮。其热气发逸，疮但出血者，名为血疮也。
凡诸疮生之初，因风湿搏血气，发于皮肤，故生也。若久不瘥，多中风、冷、水
气。若中风，则噤痉；中冷，则难瘥；中水，则肿也。
凡患诸疮及恶疮，初虽因风湿搏血气，蕴结生热，蒸发皮肉成疮。若触水露气，动经，
十数年不瘥，其疮瘀黑作痂，如被霜瓠皮，疮内肉似断，故名露败疮也。
诸疮及痈疽，皆是风湿搏血气，血气蕴结生热，而发肌肉成疮，久不瘥者，多生恶肉，
四边突起，而好肉不生。此由毒热未尽，经络尚壅，血气不到故也。
诸恶疮，皆因风湿毒所生也。当时虽瘥，其风毒瓦斯犹在经络者，后小劳热，或食毒物，
则复更发也。
漆有毒，人有禀性畏漆，但见漆，便中其毒。喜面痒，然后胸、臂、 、
皆悉瘙痒，面为起肿，绕眼微赤。诸所痒处，以手搔之，随手辇展，起赤 瘰； 瘰消已，
生细粟疮甚微。有中毒轻者，证候如此。其有重者，遍身作疮，小者如麻豆，大者如枣、杏
，脓 疼痛，摘破小定，有小瘥，随次更生。若火烧漆，其毒瓦斯则厉，着人急重。亦有性自
耐者，终日烧煮，竟不为害也。
Whenever a ju (deep-seated abscess) occurs on the lower leg, it is called Tuni Chuang (Rabbit-Bite Sore). It is also known as Xueshi Chuang (Blood-Excess Sore). This condition varies with the phases of the moon (similar to lunar eclipses), but this does not refer to sores on the lower leg per se. Investigating this sore, it arises from the interaction of Wind-Dampness pathogenic factors with Blood and Qi, generated by excess heat in Blood and Qi; hence it is named Blood-Excess. It is also named Rabbit-Bite because its shape resembles a bite mark left by a rabbit.
Regarding Xue Chuang (Blood Sore), it is stated that various sores are generated when Wind-Dampness interacts with Blood and Qi. When the pathogenic heat dissipates and escapes, and the sore only bleeds, it is named Xue Chuang.
At the initial stage of any sore, it forms because Wind-Dampness interacts with Blood and Qi and manifests on the skin. If it persists for a long time without healing, it is prone to contracting Wind, Cold, or Water-Dampness pathogens. Contracting Wind leads to trismus and spasms; contracting Cold makes it difficult to heal; contracting Water-Dampness leads to edema.
For all types of sores and malignant sores, although they initially arise from Wind-Dampness interacting with Blood and Qi, causing accumulation and heat generation which steams the skin and flesh into a sore, if exposed to water and dew moisture, disturbing the meridians, they may fail to heal for over ten years. The sore becomes dark and purplish with scabs, resembling frost-bitten gourd skin, and the flesh inside appears severed; thus it is named Lubai Chuang (Dew-Rotting Sore).
All sores and carbuncles are caused by Wind-Dampness interacting with Blood and Qi, leading to accumulation and heat generation, manifesting in the muscles as sores. If they do not heal for a long time, malignant flesh (necrotic tissue) often grows, protruding at the four sides, while healthy flesh fails to regenerate. This is due to incomplete elimination of toxic heat, obstruction of the meridians, and inability of Blood and Qi to reach the area.
All malignant sores are generated by Wind-Dampness and toxic pathogens. Although they may heal initially, if the Wind-Toxic qi remains in the meridians, subsequent slight exertion with fever or consumption of toxic foods can cause recurrence.
Lacquer contains toxicity. Some individuals have a congenital sensitivity to lacquer; merely seeing lacquer can induce poisoning. They may experience itching on the face, followed by itching in the chest and arms. The face swells, and the area around the eyes becomes slightly red. At all itchy sites, scratching causes raised red streaks and nodules along the scratch marks. After the nodules subside, tiny millet-grain-like pustules appear, very subtle. These are the symptoms of mild poisoning. In severe cases, sores cover the entire body; small ones resemble hemp seeds or beans, large ones resemble dates or apricots. The pus-filled blisters are painful; after being broken, there is slight improvement, but new ones form subsequently. Burning lacquer intensifies its toxic vapors, causing acute and severe reactions in people. However, some individuals are naturally tolerant; even if they boil lacquer all day, they suffer no harm.