夫丹疹者。为遍身肿。并白丹肉中起。痒痛微肿。如吹瘾疹起赤。亦有鸡冠赤起。大
如钱。
或有水
治赤丹。瘾疹而痒。搔之随手肿起。莽草膏方。
莽草（半两） 当归（一两） 芎 （一两） 羊踯躅（一两） 大戟（一两） 细辛
（一两） 赤
芍药（一两） 芫花（一两） 附子（一两去皮脐生用）
上件药。细锉。用猪脂三斤。煎之。候附子色黄。膏成。滤去滓。放瓷盒内贮之。每日
四五度。取少许敷于疹上。
治丹疹。烦热疼痛不止。升麻膏方。
川升麻（二两） 白薇（三两） 漏芦〔二（三）两〕 连翘（三两） 川芒硝（三两）
黄芩（
三两） 蛇衔草（三两） 枳壳（三两） 山栀子（四十枚） 蒴 （四两）
上件药。细锉。以水三升。猪脂三斤。煎候水气竭。滤去滓。用瓷器贮。不计时候涂之
治丹疹。毒瓦斯不消。时发疼痛。宜拓漏芦汤方。
漏芦（二两） 川升麻（二两） 川芒硝（二两） 黄芩〔二（三）两〕 栀子仁（二
十枚）
蒴（四两）
上件药。细锉。以水七升。煎至四升。去滓。以软帛旋蘸汤拓病上。冷即再暖用之。
又方。
羚羊角屑（三两）
上以水一大盏。浓煎取汁二合。以摩之数百遍。若无羊角。牛脂猪脂炼。候冷摩之亦效。
又方。
上用 羊角烧灰细研。以鸡子清和涂之。
又方。
上用酪和盐。热灸手涂摩即消。
又方。
上用白芷及根叶。煮洗拓之。
又方。
上用慎火草。捣熟封之。
又方。
上用白矾煮汁。拭之良。
又方。
上用蒴 汁。着少许酒相和。浴之。
又方。
上用酒煮石南汁。拭之良。
又方。
上用鸡屎汁拭之。
又方。
上用芥子。不限多少。捣罗为末。不计时候。以酽浆水调下半钱。
赤疹者。由冷湿折筋肌中。甚即为热。热即成赤胗也。得天热则剧。得冷则减。宜用此
方。
上用生蛇衔草。捣烂涂之良。
白疹者。由风气折于肌中。与风相搏。遂为疹也。得大阴而冷则剧。出风中亦剧。得晴
暖则减。身暖亦瘥。宜用此方。
上用枳实。水煮取汁拭之。
Dan zhen (Erythematous rash) refers to generalized swelling, with white dan-like rashes emerging within the muscles, accompanied by slight itching, pain, and swelling. It resembles the red patches appearing during an attack of wind wheals (Yin zhen). There are also cases where the rash rises like a rooster's comb, bright red in color, with a size comparable to a coin. Some may present with blisters.
For treating Chi Dan (Red Dan) and Yin zhen (Wind wheals) characterized by itching, where scratching leads to immediate swelling, use Mang Cao Gao (Mangcao Ointment).
Mang Cao (Radix Daphnes), Dang Gui (Radix Angelicae Sinensis), Xiong Qiong (Rhizoma Chuanxiong), Yang Zhi Zhu (Flos Rhododendri Mollis), Da Ji (Radix Euphorbiae Humifusae), Xi Xin (Herba Asari), Chi Shao Yao (Radix Paeoniae Rubra), Yuan Hua (Flos Genkwa), Fu Zi (Radix Aconiti Lateralis Preparata - here specified as raw, peeled, and de-navelled).
The aforementioned herbs are finely chopped and decocted in three jin (approx. 1.5 kg) of lard. Decoct until the Fu Zi turns yellow and the ointment is formed. Filter out the dregs and store in a porcelain box. Apply a small amount to the rash four or five times daily.
For treating Dan zhen with persistent irritability, heat, and pain, use Sheng Ma Gao (Shengma Ointment).
Chuan Sheng Ma (Rhizoma Cimicifugae), Bai Wei (Radix Cynanchi Atrati), Lou Lu (Radix Euphorbiae Humifusae), Lian Qiao (Fructus Forsythiae), Chuan Mang Xiao (Natrii Sulfas), Huang Qin (Radix Scutellariae), She Xian Cao (Herba Patriniae), Zhi Ke (Fructus Aurantii), Shan Zhi Zi (Gardeniae Fructus), Shuo Di (Herba Polygoni Avicularis).
The aforementioned herbs are finely chopped and decocted in three sheng (approx. 0.6 L) of water and three jin of lard. Decoct until the water vapor is exhausted. Filter out the dregs and store in a porcelain vessel. Apply as needed.
For treating Dan zhen where toxic factors persist and intermittent pain occurs, it is appropriate to use Tuo Lou Lu Tang (Loulu Decoction for Compress Application).
Lou Lu (Radix Euphorbiae Humifusae), Chuan Sheng Ma (Rhizoma Cimicifugae), Chuan Mang Xiao (Natrii Sulfas), Huang Qin (Radix Scutellariae), Zhi Zi Ren (Semen Gardeniae), Shuo Di (Herba Polygoni Avicularis).
The aforementioned herbs are finely chopped and decocted in seven sheng of water until reduced to four sheng. Strain the liquid. Soak a soft cloth in the warm decoction and apply compresses to the affected area. Reheat the cloth when it cools down.
Another prescription.
Ling Yang Jiao Xie (Cutis Cornu Saigae Tataricae), three liang.
Decoct one da zhan (approx. 200 ml) of water to obtain two he of concentrated juice. Massage the area hundreds of times. If Saiga antelope horn is unavailable, refined ox fat or pig fat can be used; after cooling, massage the area, which is also effective.
Another prescription.
Burn the horns mentioned above to ash, grind finely, and mix with egg white for topical application.
Another prescription.
Mix the dairy product (Lao) mentioned above with salt. Apply hot compress using hand rubbing to eliminate the condition.
Another prescription.
Use Bai Zhi (Radix Angelicae Dahuricae) and its roots and leaves. Boil and wash/compress the affected area.
Another prescription.
Use Shen Huo Cao (Herba Siegesbeckiae) mentioned above. Mash thoroughly and apply as a poultice.
Another prescription.
Boil Bai Fan (Alumen) in water to make a solution. Wipe the affected area; this is beneficial.
Another prescription.
Use the juice of Shuo Di mentioned above. Mix with a small amount of wine and bathe the affected area.
Another prescription.
Decoct Shi Nan Ye (Folium Rhododendri Daurici) in wine. Wipe the affected area; this is beneficial.
Another prescription.
Use Ji Shi (Excrementum Galli) juice to wipe the affected area.
Another prescription.
Use Jie Zi (Semen Mustardis) mentioned above, in any quantity. Grind into powder. At any time, take half qian mixed with thick rice vinegar.
Chi Zhen (Red Rash) arises from cold-dampness injuring the sinews and muscles. Severe cases transform into heat, leading to the formation of Chi Zhen. The condition worsens in hot weather and improves in cold conditions. Use this prescription.
Use fresh She Xian Cao mentioned above. Mash and apply topically; this is beneficial.
Bai Zhen (White Rash) arises from wind qi invading the muscles and battling with wind pathogens, resulting in rash. The condition worsens during cloudy/cold weather and when exposed to wind. It improves in sunny/warm weather and when the body is warm. Use this prescription.
Use Zhi Shi (Fructus Aurantii Immaturus) mentioned above. Boil in water, extract the juice, and wipe the affected area.