病源赤丹者，初发疹起，大者如连钱，小者如麻豆，肉上粟如鸡冠肌理，由风毒之重，
故使赤也，亦名茱萸丹。（出第三十一卷中）
肘后疗面目身体猝得赤斑，或黑斑，如疮状，或痒搔之，随手肿起，不急疗之日甚杀人
方。
羚羊角煎，以摩之数百遍，若无，用牛脂及猪脂，有解毒药者皆可用摩，务令分散毒瓦斯
，神妙。
又若已遍身赤者方。
生鱼合皮鳞烧捣末，以鸡子白和，遍涂之。（文仲备急同）
又新附方。
羚羊角无多少，即烧之为灰，令极细，以鸡子清和涂之，极神效，无鸡子，以水和涂之
亦妙
急文
集验疗人面目身体猝赤黑丹起如疥状，不疗日剧，遍身即杀人也。
煎羊脂以摩之，青羊脂最良。（千金文仲肘后删繁同）
又方
以猪槽下土泥涂之。（千金同又以饲猪杓炙熨之即瘥并出第八卷中）
病源白丹者，初发痒痛，微虚肿如吹疹起，不痛不赤而白色，由挟风冷，故然色白也。
（出第三十一卷中）
肘后疗白丹方。
末豉以酒和涂之，捣香薷叶苦蓼敷之。
又方
屋上尘以苦酒和涂之。
又方
烧鹿角作灰以猪膏敷之。
又方
蜜和干姜末敷之。
又方
酸模草五叶草煮饮汁，又以滓薄丹，以荠亦佳。（备急文仲同出第二卷中）
集验云，有白丹者，肉中起痒痛，微虚肿如吹瘾疹起者，疗之亦如赤丹法，有鸡冠者，
赤色丹起，大者如连钱，小者如麻麦豆粒，肉上粟粟如鸡冠肌理也，方说一名为茱萸火丹，
疗之如
处，疗
疗皆成
发散，
皆由
如此
捣白瓷器屑，猪膏和涂之。
又方
烧猪矢灰，和鸡子白涂之。（肘后千金备急文仲同）
崔氏疗丹毒，或发背及诸肿方。
取马齿草熟捣敷之，数数易，勿住，若得蓝淀和之，更良。
又方
以生羊牛肉贴，数数易之良。
又方
鼠粘草根勿使见风及犬见，洗去土，熟捣以敷肿处，兼绞取汁饮之佳。
又方
茺蔚草蛇衔草慎火草相和，熟捣敷之良，数数易之。
又方
捣鲫鱼敷之，数数易之良。（出第五卷中）
备急疗白丹方。
苎根三斤，小豆四升，水二斗煮以浴，日三四遍。（肘后文仲同出第四卷中）
[Pathogenesis] Chi Dan (Red Erysipelas) initially presents with raised rashes; large lesions resemble linked coins, while small ones resemble hemp seeds or beans. The skin surface exhibits granular elevations resembling the texture of a rooster's comb. This redness is caused by severe Wind-Toxin, and it is also known as Zhuyu Dan (Cornel Erysipelas). (From Volume 31)
*Zhouhou Beiji Fang* (Emergency Prescriptions Kept Up My Sleeve) treats sudden appearance of red or black spots on the face, eyes, and body, resembling sores. Itching may occur, swelling arises immediately upon scratching. If not treated urgently, the condition worsens and can be fatal.
Formula: Apply Lingyang Jiao Jian (Antelope Horn Decoction/Paste) to the affected area hundreds of times. If unavailable, use beef tallow or pork lard. Any available detoxifying agents can also be applied to disperse the toxic qi; this method is miraculous.
Another formula for cases where redness has spread over the entire body:
Burn raw fish including skin and scales, grind into powder, mix with egg white, and apply evenly over the lesion. (Same as *Wenzhong Beiji*)
Newly Added Formula:
Burn antelope horn (Lingyang Jiao) into fine ash regardless of quantity. Mix with egg white and apply; highly effective. If egg white is unavailable, mix with water and apply, which is also excellent.
*Jiyan Fang* (Collected Effective Prescriptions) treats sudden onset of red-black erysipelas on the face, eyes, and body, presenting like scabies. Untreated, it worsens daily and becomes fatal if it covers the whole body.
Formula: Boil sheep tallow and apply to the lesion; fat from blue sheep is best. (Same as *Qianjin*, *Wenzhong*, and abridged version of *Zhouhou*).
Another formula:
Apply mud from under the pig trough to the lesion. (Same as *Qianjin*; additionally, heating a pig-feeding scoop and applying it as a hot compress cures the condition. Both from Volume 8).
[Pathogenesis] Bai Dan (White Erysipelas) initially presents with itching and pain, slight puffiness resembling wind-driven hives. It is neither painful nor red but appears white due to the presence of Wind-Cold pathogenic factors. (From Volume 31)
*Zhouhou Beiji Fang* treatment for Bai Dan:
Grind fermented soybean (Chi Dou) into powder, mix with wine, and apply. Alternatively, crush Xiangru Ye (Elsholtzia Leaf) and Ku Liao (Polygonum Bistorta Leaf) and apply as a poultice.
Another formula:
Mix dust from the roof with vinegar and apply.
Another formula:
Burn deer horn into ash and apply with pork lard.
Another formula:
Mix honey with dried ginger powder and apply.
Another formula:
Boil five leaves of Sour Dock (Rumex acetosa) in water, drink the juice, and apply the residue thinly over the erysipelas. Shepherd's purse (Qi Cai) is also good. (Same as *Beiji* and *Wenzhong*, from Volume 2).
*Jiyan Fang* states that patients with Bai Dan experience itching and pain within the flesh, with slight puffiness resembling wind-driven hives. Treat it similarly to Chi Dan. For Chi Dan presenting like a rooster's comb, large lesions resemble linked coins, small ones resemble hemp/wheat/bean grains, with granular skin elevations like a rooster's comb texture. One such prescription is called Zhuyu Huo Dan. Treatment methods are as described above... [Text fragment missing/corrupted].
Crush fragments of white porcelain, mix with pork lard, and apply.
Another formula:
Burn pig feces into ash, mix with egg white, and apply. (Same as *Zhouhou*, *Qianjin*, *Beiji*, and *Wenzhong*).
Cui Shi’s formula for treating Dan Du (Erysipelas Toxin), back carbuncles, and various swellings:
Take Purslane (Machi Cao), cook until soft, crush, and apply. Change frequently without stopping. If mixed with Indigofera tinctoria extract (Lan Dian), it is even better.
Another formula:
Apply fresh mutton or beef to the area; change frequently for good results.
Another formula:
Take Burdock root (Shuniu Zi Gen), avoid exposure to wind and dogs. Wash off soil, cook thoroughly, crush, and apply to the swollen area. Squeeze out the juice and ingest it orally for better effect.
Another formula:
Mix Leonurus japonicus (Chongwei Cao), Artemisia anomala (She Xian Cao), and Scutellaria barbata (Shen Huo Cao), cook thoroughly, crush, and apply. Change frequently.
Another formula:
Crush crucian carp and apply; change frequently for good results. (From Volume 5).
*Beiji Fang* treatment for Bai Dan:
Take three jin (approx. 1.5 kg) of Ramie root (Zhu Gen) and four sheng (approx. 0.6 liters) of adzuki beans. Boil in two dou (approx. 20 liters) of water. Use the decoction for bathing, three to four times daily. (Same as *Zhouhou* and *Wenzhong*, from Volume 4).