病源丹疹者，肉色不变，又不热，但起瘾疹，相连而微痒，故谓之丹疹。（出第三十一
卷中）
千金翼疗丹瘾疹方。
酪和盐热煮以摩之，手下消也。
又方
白芷根叶煮汁洗之效。
又方
捣慎火叶封之神良。
又方
以一条艾蒿烛竿，以两手极意寻之，着壁，伸十指，当中指头以大艾炷灸烛竿上，令烛
竿断即止，灸十十瘥，于后重发，更依此灸，永瘥。
千金云，凡赤疹热时发，冷即止，白疹天阴冷即发方。
白疹以水煮白矾汁拭之，又煮蒴 着少酒以浴，又以酒煮石南拭之，又以水煮鸡屎汁拭
之，又枳实汁拭之，所疗一如疗丹法。（集验同）
又方
末白术，酒服方寸匕，日三，尽五斤。
又方
淋锻石汁渍洗之。
又方
煎白芷根叶作汤，洗之。
又方
芥子末，以醋浆水服方寸匕，日三服瘥。
又疗身体赤瘾疹而痒，搔之随手肿方。
莽草（二分） 当归 芎 踯躅花 大戟 细辛 芍药 芫花 附子（炮） 蜀椒（各
四分
）猪脂（二升半）
上十一味切，以猪膏合煎之，候附子色黄，膏成，滤去滓，收贮以敷病，日三，以瘥为
度。
又方
矾石二两，酒三升渍令 ，拭上立瘥。
延年疗赤白二疹丸方。
白术（一斤） 蔓荆子（四分） 防风（四分） 附子（二分炮） 桂心（二分）
上五味捣筛，蜜和为丸如梧子大，酒服十丸，日二服，稍加至十五丸，若能作散，服一
钱匕，此疗风疹正方，凡风皆由旧来有风气，所以方中不得不用桂心附子，白术既用一斤，
附子
又其赤疹心家稍虚，热气相搏，其色赤，宜作芒硝汤拭之方。
芒硝（三两）
上一味用汤一升，纳芒硝令消散，以帛子沾取拭疹，即渐除，汤尽更合。（以前二件赤
白疹方许崇处并出第十三卷中）
古今录验云，赤疹者，由冷湿折于肌中，甚即为热，热成赤疹也，得天热则剧，取冷则
减疗之方。
取生蛇衔草捣极烂，以涂之最验。（集验短剧同）
又白疹者，由风气折于肌中之热，热与风相搏，遂为白疹也，得天阴雨，冷则剧出，风
中亦剧，得晴暖则减，着衣身暖亦瘥，疗之方。
水煮枳实拭之佳，又捣末熬之，青布裹熨之。（集验同出第三十卷中）
【病源】丹疹，表现为皮肤颜色不变，不发热，仅出现瘾疹（风团样皮疹），连成片且轻微瘙痒，因此称为丹疹。（出自第三十一卷中）
《千金翼方》治疗丹疹和瘾疹的方剂。
用酪（乳制品）加盐加热煮后，涂抹按摩患处，手下即可消退。
又一方：
取一根艾蒿的烛竿，双手极意寻找，将其按在墙壁上，伸出十指，用中指指尖对准烛竿，以较大的艾炷灸烧烛竿，直到烛竿断裂即停止。灸治十个部位可痊愈，若日后复发，再依此法灸治，可永久治愈。
《千金方》记载：凡是赤疹，热时发作，冷时停止；白疹在天阴冷时发作的方剂。
治疗白疹：用水煮白矾汁擦拭患处；又或用蒴藋煮少许酒沐浴；又或用酒煮石南叶擦拭；又或用水煮鸡屎汁擦拭；又或用枳实汁擦拭。所治方法如同治疗丹疹的方法。（《集验方》相同）
又治疗身体出现红色瘾疹且瘙痒，搔抓后随即肿起的方剂。
莽草（二分） 当归 川芎 踯躅花 大戟 细辛 芍药 芫花 附子（炮制） 蜀椒（各四分） 猪脂（二升半）
以上十一味药材切碎，用猪膏合煎，等到附子颜色变黄，膏成，过滤去渣，收贮起来敷于患处，每日三次，以痊愈为度。
又一方：
矾石二两，酒三升浸泡至溶解，擦拭患处立即痊愈。
《延年方》治疗赤疹和白疹的丸剂方。
白术（一斤） 蔓荆子（四分） 防风（四分） 附子（二分，炮制） 桂心（二分）
以上五味药捣碎过筛，蜂蜜调和制成梧桐子大小的丸剂，酒送服十丸，每日两次，逐渐增加至十五丸。若能制成散剂，服用一钱匕。这是治疗风疹的正方，凡风疹皆因体内旧有风气所致，所以方中不得不用桂心和附子。白术既然用了一斤，附子……（此处原文似有脱漏或语意未完，依文意理解为强调温阳祛风之必要）。其赤疹多因心家稍虚，热气相搏，颜色发红，宜用芒硝汤擦拭的方剂。
芒硝（三两）
以上一味药，用水一升，放入芒硝使其溶解，用帛巾沾取擦拭疹处，即渐渐消除，汤用完再重新配制。（前两件赤白疹方，许崇处并出第十三卷中）
《古今录验》记载：赤疹，是由于冷湿折伤于肌中，严重时化为热，热盛而成赤疹，得天热则加剧，取冷则减轻。治疗方剂：
取生蛇衔草捣烂至极，涂抹患处最灵验。（《集验方》、《短剧方》相同）
又白疹，是由于风气折伤于肌中的热，热与风相搏，遂成白疹，得天阴雨冷则加剧发作，风中亦加剧，得晴暖则减轻，穿衣身暖也痊愈。治疗方剂：
水煮枳实擦拭患处佳，又或捣末炒热，用青布包裹熨烫患处。（《集验方》相同，出自第三十卷中）
[Pathogenesis] Danzhen (Dan Rash) is characterized by unchanged skin color, absence of heat sensation, and the appearance of Yinzhen (urticaria-like wheals). These wheals are contiguous and mildly pruritic, hence the name Danzhen. (From Volume 31)
*Qianjin Yi Fang* Prescriptions for Treating Danzhen and Yinzhen.
Boil dairy products (Lao) with salt, heat it, and apply/massage onto the affected area; it will subside immediately upon application.
Another Prescription:
Boil the roots and leaves of Angelica dahurica (Baizhi), use the decoction to wash the affected area; effective.
Another Prescription:
Crush Shenhuye (Aconitum coreanum leaves or similar herb depending on context, literally "Caution Fire Leaf") and apply as a poultice; miraculous effect.
Another Prescription:
Take one stalk of Mugwort (Ai Hao) candle stem. Locate it carefully with both hands and press it against a wall. Extend ten fingers. Align the tip of the middle finger with the stem. Apply a large moxa cone to burn the stem. Stop when the stem breaks. Moxibustion on ten sites leads to cure. If it recurs later, repeat this moxibustion method for permanent cure.
*Qianjin Fang* states: For Chi Zhen (Red Rash), it appears when hot and subsides when cold. For Bai Zhen (White Rash), it appears during cloudy and cold weather.
Prescription for Bai Zhen:
Wipe the affected area with a decoction of Alum (Bai Fan) boiled in water. Alternatively, bathe in a decoction of Fern (Shuodai) with a little wine. Alternatively, wipe with Stone Nan Ye (Pieris japonica) boiled in wine. Alternatively, wipe with juice from chicken manure boiled in water. Alternatively, wipe with juice from Immature Bitter Orange (Zhishi). The treatment method is the same as that for Danzhen. (*Jiyan Fang* is identical.)
Another Prescription:
Powderized Atractylodes macrocephala (Baizhu), taken orally with wine, one fangcun bi (a measure of volume) per dose, three times daily. Consume five jin total.
Another Prescription:
Filter the juice of calcined stone (Duanshi) and soak/wash the affected area.
Another Prescription:
Decoct the roots and leaves of Angelica dahurica (Baizhi) to make a soup, and wash the affected area.
Another Prescription:
Powderized Mustard Seed (Jiezi), taken orally with vinegar-fermented rice water, one fangcun bi per dose, three times daily until cured.
Another Prescription for treating red urticaria on the body accompanied by itching, where scratching causes immediate swelling:
Dongxiang Cao (Dichroa febrifuga root or similar, here listed as Mangcao - *Note: Mangcao usually refers to Daphne odora, but context suggests toxic herbs often used externally*) (2 fen)
Angelica sinensis (Danggui)
Ligusticum chuanxiong (Xiong)
Rhododendron molle (Zhi Zhu Hua)
Euphorbia pekinensis (Daji)
Asarum sieboldii (Xixin)
Paeonia lactiflora (Shaoyao)
Genkwa flos (Yuanhua)
Aconitum carmichaelii (Fuzi, processed)
Sichuan pepper (Shujiao) (4 fen each)
Lard (Zhu Zhi) (2.5 sheng)
Cut the above eleven ingredients. Decoct them together with lard. Wait until Fuzi turns yellow and the ointment is ready. Filter out the dregs. Store and apply to the diseased area. Three times daily. Continue until cured.
Another Prescription:
Alum (Fanshi) 2 liang, steeped in 3 sheng of wine until dissolved. Wipe onto the affected area for immediate cure.
*Yannian Fang* Pills for Treating Red and White Rashes:
Atractylodes macrocephala (Baizhu) (1 jin)
Vitex trifolia (Manjingzi) (4 fen)
Saposhnikovia divaricata (Fangfeng) (4 fen)
Aconitum carmichaelii (Fuzi, processed) (2 fen)
Cinnamon twig heart (Guixin) (2 fen)
Grind the above five herbs into powder. Mix with honey to form pills the size of a wutong seed. Take 10 pills orally with wine, twice daily. Gradually increase to 15 pills. If prepared as a powder, take one qianbi. This is the standard prescription for Fengzhen (Wind Rash). All wind rashes arise from pre-existing wind pathogens in the body; therefore, Guixin and Fuzi are indispensable in this formula. Since Baizhu is used in the amount of one jin... [Text implies emphasis on warming yang and dispelling wind]. Regarding Chi Zhen, it is often due to slight deficiency in the Heart, with heat qi clashing, resulting in red coloration. It is suitable to use Magnesium Sulfate (Mangxiao) decoction for wiping.
Magnesium Sulfate (Mangxiao) (3 liang)
Take one sheng of water, dissolve the Mangxiao in it. Dip a cloth in the solution and wipe the rash. It will gradually disappear. Prepare a new batch when the liquid is exhausted. (The previous two prescriptions for red and white rashes were cited from Xu Chong's collection, Volume 13).
*Gujin Luyan* states: Chi Zhen arises because cold-dampness injures the muscle layer. Severe cases transform into heat, and excessive heat forms Chi Zhen. Symptoms worsen in hot weather and improve with cooling. Treatment Prescription:
Take fresh She Xian Cao (Omphalopus japonicus or similar), crush it thoroughly, and apply to the affected area. Most effective. (*Jiyan Fang* and *Duanji Fang* are identical.)
Regarding Bai Zhen: It arises because wind-pathogen injures the heat within the muscle layer. Heat and wind clash, forming Bai Zhen. Symptoms worsen during cloudy/rainy/cold weather and in windy conditions. They improve in sunny/warm weather and when the body is kept warm by clothing. Treatment Prescription:
Decoct Zhishi (Immature Bitter Orange) and wipe the affected area; this is good. Alternatively, grind into powder, heat it, wrap in blue cloth, and apply as a hot compress. (*Jiyan Fang* is identical, from Volume 30).