血风疮，乃风热、湿热、血热三者交感而生。发则搔痒无度，破流脂水，日渐沿开。甚者内服消风散加牛
膝、黄柏，外搽解毒雄黄散或如意金黄散俱可敷之。如年久紫黑坚硬，气血不行者，用针砭去黑血，以神灯照
法熏之，以解郁毒，次以前药敷之方效。
解毒雄黄散
治风湿流注腿脚，致生血风顽疮，紫黑瘙痒者。
雄黄（四两） 硫黄（八两）
上二味，共碾细末，地沥青调搽，纸盖之，三日一换。
如意金黄散（见肿疡门）
治症同前。
用公猪胆汁调稠敷患上，油纸盖托勿动，待其自脱，脱后色红再敷之，以色白为度。
神灯照法（见肿疡门）
治年久紫黑血风顽疮，流水作痒不绝。
先用葱汤洗净患上，点火以灯焰熏之，每熏二拈为度。
凉血消风散（见疥疮门）
顽癣乃风、热、湿、虫四者为患。发之大小圆斜不一，干湿新久之殊。风癣如云朵，皮肤娇嫩，抓之则起
白屑；湿癣如虫
形，瘙之则有汁出；顽癣抓之则全然不痛；牛皮癣如半项之皮，顽硬且坚，抓之如朽木；马皮癣微痒、白点相
连；狗皮癣白斑相簇，此等总皆血燥风毒克于脾、肺二经。初起用消风散加浮萍一两，葱、鼓作引，取汗发散。
久者服首乌丸、蜡矾丸，外擦土大黄膏，用槿皮散选而用之，亦可渐效。
土大黄膏
土大黄膏用白矾 硫黄八两共加参
川椒三味研成末 顽癣搽之不费难
治干湿顽癣，不论新久，但皮肤顽浓，串走不定，惟痒不痛者。
硫黄（八两） 生矾（四两） 点红川椒（二两）
上各为末，用土大黄根捣汁，和前药调成膏碗贮，新癣抓损擦之，多年顽癣加醋和擦，如日久药干，以醋
调搽；牛皮癣用穿山甲抓损擦之妙。
顽癣必效方
顽癣必效川槿皮 轻粉雄黄巴豆宜
斑蝥大黄百药煎 阴阳水和海桐皮
治多年顽癣，诸药熏擦搽洗不效者，用之即愈。
川槿皮（四两） 轻粉 雄黄（各四钱） 百药煎（四饼） 斑蝥（全用，一钱） 巴豆（去油，一钱五分）
大黄（二两） 海桐皮（二两）
上为极细末，用阴阳水调，抓损敷药，必待自落。
又∶顽癣方
顽癣方中川槿皮 斑蝥轻粉各相宜
再加七个枫子肉 新笔涂将患处医
川槿皮（二钱） 轻粉（五分） 斑蝥（七个） 大枫子（七个）
河、井水共一钟，煎一半，露一宿，笔蘸涂之。
顽癣浮萍丸
浮萍丸内苍耳草 苍术黄芩共苦参
姜蚕钩藤并 酒丸服下可回春
紫背浮萍 苍术 苍耳草（各二两） 苦参（四两） 黄芩 姜蚕（各一两） 钩藤（一两五钱）
草（二两，酒蒸）
共为末，酒糊丸，白滚汤每服二钱，随病上下服。
血风疮，是由于风热、湿热、血热三种邪气相互感应而引发的。发作时瘙痒无度，抓破后流出脂水，皮损日渐扩大蔓延。病情严重者，内服消风散并加入牛膝、黄柏，外用解毒雄黄散或如意金黄散涂抹均可。若病程长久，患处呈紫黑色且坚硬，气血运行不畅者，可用针砭法刺破排出黑血，再以神灯照法熏蒸，以解除郁积之毒，随后再用前述药物敷贴才有效。
解毒雄黄散
治疗风湿流注于腿脚，导致产生血风顽疮，患处紫黑瘙痒的情况。
雄黄（四两） 硫黄（八两）
以上两味药，共同研磨成细末，用地沥青调和后涂抹，用纸覆盖，每三天更换一次。
如意金黄散（见肿疡门章节）
治疗的病症与上述相同。
用公猪胆汁调成稠状敷于患处，用油纸覆盖固定不动，等待其自然脱落，脱落后若肤色发红再行敷贴，直到肤色恢复正常白色为止。
神灯照法（见肿疡门章节）
治疗病程长久、呈紫黑色的血风顽疮，流水不止且持续瘙痒。
先用葱汤洗净患处，点燃灯火，用灯焰熏烤患处，每次熏烤以燃烧两根灯芯为限度。
顽癣是由风、热、湿、虫四种因素致病所致。发病形态大小、圆形或斜形不一，干湿程度及新久病程也有差异。风癣如同云朵形状，皮肤娇嫩，抓挠则出现白屑；湿癣如同虫形，搔抓则有汁液流出；顽癣抓挠则完全不痛；牛皮癣如同半片牛皮，顽固坚硬，抓挠感觉如朽木；马皮癣轻微瘙痒，有白点相连；狗皮癣白斑聚集簇拥，这些情况总归都是血燥风毒侵犯脾、肺二经所致。初起时用消风散加入浮萍一两，以葱、豆豉为引，取汗发散。病程久者服用首乌丸、蜡矾丸，外擦土大黄膏，选用槿皮散使用，也可逐渐见效。
土大黄膏
土大黄膏由白矾、硫黄各八两，加上川椒三味药研磨成末制成，用于搽治顽癣并不困难。
治疗干湿顽癣，不论新病久病，只要皮肤顽固浓厚，游走不定，只有瘙痒而不疼痛的。
硫黄（八两） 生矾（四两） 点红川椒（二两）
以上各药分别研成粉末，用土大黄根捣出的汁液，与前药调和成膏状，用碗贮存。新发的癣症抓损处擦拭，多年的顽癣加醋调和擦拭，如果日久药干，用醋调匀涂抹；牛皮癣用穿山甲刮破皮肤后擦拭效果奇妙。
顽癣必效方
治疗多年的顽癣，各种药物熏、擦、涂、洗均无效者，使用此方即可痊愈。
川槿皮（四两） 轻粉、雄黄（各四钱） 百药煎（四个饼状） 斑蝥（全用，一钱） 巴豆（去油，一钱五分） 大黄（二两） 海桐皮（二两）
以上药物研成极细粉末，用阴阳水调和，抓破患处敷药，必须等待其自然脱落。
另外：顽癣方
川槿皮、斑蝥、轻粉比例适宜，再加上七个大枫子肉，用新毛笔涂抹患处医治。
川槿皮（二钱） 轻粉（五分） 斑蝥（七个） 大枫子（七个）
河水、井水共一杯，煎至一半量，露天放置一夜，用笔蘸取涂抹。
顽癣浮萍丸
浮萍丸内含苍耳草、苍术、黄芩、苦参、姜蚕、钩藤，制成酒丸服用可恢复健康。
紫背浮萍、苍术、苍耳草（各二两） 苦参（四两） 黄芩、姜蚕（各一两） 钩藤（一两五钱） 甘草（二两，酒蒸制）
以上药物共同研成粉末，用酒糊制作成丸剂，白开水送服，每次二钱，根据病变部位上下随证服用。
Xuefeng Chuang (Blood Wind Eczema) arises from the mutual interaction of wind-heat, damp-heat, and blood-heat pathogens. Upon onset, it causes excessive itching; when broken, it exudes serous fluid, and the lesions spread gradually. For severe cases, internal administration of Xiaofeng San (Wind-Dispersing Powder) with added Niuxi (Achyranthes Root) and Huangbai (Phellodendron Bark), combined with external application of Jiedu Xionghuang San (Antidote Realgar Powder) or Ruyi Jinhuang San (Ruyi Golden Yellow Powder), is effective. If the condition persists for years, presenting as purple-black and hard with stagnant Qi and Blood, use needle scarification to drain the dark blood, followed by fumigation using Shendeng Zhao Fa (Divine Lamp Illumination Method) to resolve stagnant toxicity, then apply the aforementioned medicines externally for efficacy.
Jiedu Xionghuang San (Antidote Realgar Powder)
Treats rheumatism flowing into the legs and feet, causing blood wind stubborn ulcers characterized by purple-black discoloration and itching.
Xionghuang (Realgar, 4 liang) Liuhuang (Sulfur, 8 liang)
Grind these two ingredients into fine powder, mix with bitumen for topical application, cover with paper, and change every three days.
Ruyi Jinhuang San (Ruyi Golden Yellow Powder) (See section on Swollen Ulcers)
Indications are the same as above.
Mix with bile from a male pig to form a thick paste, apply to the affected area, cover with oiled paper without moving it, wait for natural detachment, and reapply if redness appears after detachment, continuing until the skin returns to normal white color.
Shendeng Zhao Fa (Divine Lamp Illumination Method) (See section on Swollen Ulcers)
Treats chronic blood wind stubborn ulcers that are purple-black, weeping continuously, and persistently itchy.
First wash the affected area with scallion soup, then ignite a lamp and fumigate the area with the flame. Each fumigation session should last for the burning of two wicks.
Liangxue Xiaofeng San (Cool-Blood Wind-Dispersing Powder) (See section on Scabies)
Wan Xuan (Stubborn Tinea) is caused by the pathogenic factors of wind, heat, dampness, and insects. The lesions vary in size and shape (round or oblique) and differ in dryness/moisture content and duration (new or old). Feng Xuan (Wind Tinea) resembles clouds, with tender skin that flakes white when scratched; Shi Xuan (Damp Tinea) resembles worm shapes, exuding fluid when scratched; Wan Xuan (Stubborn Tinea) does not hurt when scratched; Niu Pi Xuan (Cowhide Tinea) resembles half a piece of cowhide, being stubbornly hard and firm, feeling like rotten wood when scratched; Ma Pi Xuan (Horse Skin Tinea) is slightly itchy with connected white spots; Gou Pi Xuan (Dog Skin Tinea) features clustered white patches. All these conditions are generally due to blood dryness and wind-toxin attacking the Spleen and Lung meridians. In the early stage, use Xiaofeng San (Wind-Dispersing Powder) with 1 liang of Fuping (Mint Weed), using Cong (Scallion) and Gu (Fermented Soybeans) as guides to induce sweating and disperse the pathogen. For chronic cases, administer Shouwu Wan (Polygonum Pill) or Lafan Wan (Beeswax-Alum Pill), externally apply Tudahuang Gao (Wild Rhubarb Ointment), and selectively use Jinpi San (Hibiscus Bark Powder), which can yield gradual improvement.
Tudahuang Gao (Wild Rhubarb Ointment)
Prepared with Baifan (Alum), Liuhuang (Sulfur, 8 liang each), and Chuanjiao (Sichuan Pepper, 3 ingredients ground together), this ointment treats stubborn tinea easily.
Treats dry or damp stubborn tinea, regardless of new or old onset, where the skin is stubbornly thick, migratory, itchy but painless.
Liuhuang (Sulfur, 8 liang) Shengfan (Raw Alum, 4 liang) Dianhong Chuanjiao (Red-point Sichuan Pepper, 2 liang)
Grind each ingredient separately into powder. Use juice extracted from wild rhubarb roots to mix with the powders into an ointment, stored in a bowl. Apply to scratched areas for new tinea; for chronic tinea, mix with vinegar for application. If the medicine dries out over time, re-mix with vinegar. For Niu Pi Xuan (Cowhide Tinea), scratching the skin with Pangshanjia (Pangolin Scales) before application yields excellent results.
Wan Xuan Bixiao Fang (Certain-Efficacy Formula for Stubborn Tinea)
For chronic stubborn tinea unresponsive to various fumigation, rubbing, applying, or washing treatments, this formula brings immediate cure.
Chuanjinpi (Chrysanthemum Kiusianum Bark, 4 liang) Qingfen (Calomel, 4 qian) Xionghuang (Realgar, 4 qian) Baiyaojian (Black Tea Cake, 4 pieces) Banmao (Mustard Beetle, whole, 1 qian) Badou (Croton Seed, oil removed, 1.5 qian) Dahuang (Rhubarb, 2 liang) Haitongpi (Cryptocarya Cortex, 2 liang)
Grind all ingredients into extremely fine powder. Mix with Yin-Yang Water (mixed spring and well water), apply to scratched areas, and wait for natural detachment.
Additionally: Another Formula for Stubborn Tinea
Chuanjinpi (Chrysanthemum Kiusianum Bark), Banmao (Mustard Beetle), and Qingfen (Calomel) are used in appropriate proportions, plus seven seeds of Dafengzi (Boswellia Fruit). Apply with a new brush to the affected area.
Chuanjinpi (2 qian) Qingfen (0.5 qian) Banmao (7 beetles) Dafengzi (Seven seeds)
Boil one cup of river water and well water together until reduced by half, leave exposed overnight, and apply with a brush.
Wan Xuan Fuping Wan (Floating Duckweed Pill for Stubborn Tinea)
Contains Cang'ercao (Xanthium Herb), Cangzhu (Atractylodes Rhizome), Huangqin (Scutellaria Root), Kushen (Sophora Root), Jiangcan (Silkworm), and Gouteng (Uncaria Ramulus). Formed into wine pills, taking them restores health.
Zibei Fuping (Purple-backed Floating Duckweed), Cangzhu (Atractylodes Rhizome), Cang'ercao (Xanthium Herb) (each 2 liang) Kushen (Sophora Root, 4 liang) Huangqin (Scutellaria Root), Jiangcan (Silkworm) (each 1 liang) Gouteng (Uncaria Ramulus, 1.5 liang) Gancao (Licorice Root, 2 liang, steamed with wine)
Grind into powder, bind with wine paste to make pills. Take 2 qian per dose with plain boiled water, adjusting dosage based on the location of the disease.