（丹火附）
《巢氏病源》小儿火丹候∶火丹之状往往如伤寒赤着身，而日渐大者，谓之火丹候。
《巢氏病源》小儿丹火候∶丹火之状，发赤如火之烧，须臾 浆起是也。
《婴孺》云∶火丹者，往来如伤寒赤着身体，不从伤火而得名。赤如日出时，以从其处，又名日丹。宜同用
《千金》漏芦汤。治小儿热毒痈疽，赤白朱丹疮疖。（漏芦汤方见痈门。）
《千金》治小儿火丹赤如朱，走皮中方。
上以醋和豉研，敷之。
《千金》又方
上鲤鱼血敷之，良。
《千金》又方
上捣荏子敷之，良
《千金》又方
上猪屎水和，绞取汁，服少许良。
《仙人水鉴》治火丹疮方。
荞面 黄连（各少许）
上同研令细，涂之立瘥。切不得入油及盐。
《广利方》∶小儿火丹，热如火绕腰即损。
上杵马齿菜敷之，日二。
《婴孺》治小儿火丹走皮中赤者方。
上栀子末以醋和，敷之。
《婴孺》又方
上鲤鱼杵烂，或片拓之。
《婴孺》治小儿天火丹者，凡小儿肉中有赤如丹色，大者如手极，遍身赤痒而微淫者方。
上小豆二升为末，鸡子白和，封之。遍身者合涂之令遍。
《婴孺》治小儿火丹方。
上取不犯水羊脂向火上炙，敷丹上，以白粉粉之，大良，无忌。
【火丹附篇】
《诸病源候论》中关于小儿火丹的论述：火丹的症状往往像伤寒一样，皮肤发红并蔓延至全身，且日渐扩大，这被称为火丹候。
《诸病源候论》中关于小儿丹火的论述：丹火的症状，发作时皮肤赤红如火烧一般，片刻之间就会起水泡。
《婴孺书》记载：火丹的症状，往来变化如同伤寒导致身体发红，并非因为被火灼伤而得名。其颜色赤红如日出之时，因此从其形态特征，又被称为日丹。适宜共同使用《千金方》中的漏芦汤。该方可治疗小儿热毒引起的痈疽，以及赤白朱丹疮疖。（漏芦汤的方剂组成见痈门章节。）
《千金方》治疗小儿火丹，症状为皮肤赤红如朱砂色，且在皮中游走的方子。
以上述方法，用醋调和豆豉研磨后，外敷患处。
《千金方》的另一方：
以上述方法，取鲤鱼血外敷，效果良好。
《千金方》的又一方案：
以上述方法，捣碎荏子（紫苏籽）外敷，效果良好。
《千金方》的又一方案：
以上述方法，用猪粪水调和，绞取汁液，服用少许，效果良好。
《仙人水鉴》治疗火丹疮的方子。
荞麦面、黄连（各取少许）
以上药物共同研磨成细末，涂抹患处，可立即痊愈。切记不可加入油和盐。
《广利方》记载：小儿火丹，若热气如火般环绕腰部，则会损伤身体。
以上述方法，将马齿苋捣烂后外敷，每日两次。
《婴孺书》治疗小儿火丹在皮中游走发红的方子。
以上述方法，取栀子末，用醋调和后外敷。
《婴孺书》的另一方：
以上述方法，将鲤鱼捣烂，或者切片拓敷患处。
《婴孺书》治疗小儿天火丹的方子，凡小儿肌肉中有赤红如丹色的皮疹，大的如手掌大小，遍布全身，伴有瘙痒且轻微渗液的病症。
以上述方法，取小豆二升研为粉末，用鸡蛋清调和，封贴患处。若遍布全身，则需涂抹全身。
《婴孺书》治疗小儿火丹的方子。
以上述方法，取未接触过水的羊脂，在火上烤炙，敷于丹毒之上，再撒上白粉，效果极佳，无禁忌。
[Appendix on Huodan]
*Zhubing Yuanhou Lun* (Source of All Diseases) regarding the condition of pediatric Huodan: The manifestation of Huodan often resembles Taiyang disease (disease of the Taiyang channel) with redness spreading over the body, enlarging day by day; this is termed the Huodan syndrome.
*Zhubing Yuanhou Lun* regarding the syndrome of pediatric Danhuo: The appearance of Danhuo involves skin turning crimson like a fire burn, with blisters arising within moments.
*Yingru Shu* states: Huodan manifests intermittently with redness on the body similar to Taiyang disease; it is not named after injury by fire. Its redness resembles the sunrise, hence it is also called Ridan (Sun Dan). It is appropriate to jointly use Loulu Tang (Ludang Root Decoction) from *Qianjin Fang*. This formula treats pediatric heat-toxin carbuncles and sores, as well as Chi Bai Zhudan sores and boils. (The prescription for Loulu Tang is found in the Carbuncle section.)
*Qianjin Fang* treats pediatric Huodan where the skin is crimson like cinnabar and moves within the dermis.
Take fermented soybeans (Chidou), grind them with vinegar, and apply externally.
Another prescription from *Qianjin Fang*:
Apply blood from a common carp (Cyprinus carpio) externally; it is effective.
Another prescription from *Qianjin Fang*:
Grind seeds of Perilla frutescens (Shenzi) and apply externally; it is effective.
Another prescription from *Qianjin Fang*:
Mix pig feces with water, squeeze out the juice, and ingest a small amount; it is effective.
Prescription for treating Huodan sores from *Xianren Shuijian*:
Buckwheat flour (Fagopyri Esculenti Semen) and Rhizoma Coptidis (Huanglian) (each in small amounts).
Grind these together into a fine powder and apply topically for immediate recovery. Strictly avoid adding oil or salt.
*Guangli Fang* records: In pediatric Huodan, if the heat wraps around the waist like fire, it causes damage.
Pound fresh Portulaca oleracea (Machixiancai) and apply externally twice daily.
*Yingru Shu* treats pediatric Huodan moving within the skin causing redness.
Take powder of Gardenia jasminoides fruit (Zhizi), mix with vinegar, and apply externally.
Another prescription from *Yingru Shu*:
Pound common carp flesh until paste-like, or slice and apply to the affected area.
*Yingru Shu* treats pediatric Tianhuodan (Heavenly Fire Dan), characterized by crimson, dan-colored rashes within the flesh of children, large ones up to the size of a palm, covering the whole body with itching and slight exudation.
Take two sheng of Vigna angularis (Xiaodou/Adzuki bean), grind into powder, mix with egg white (Jizi Bai), and apply as a compress. If covering the whole body, apply thoroughly over the entire surface.
*Yingru Shu* treats pediatric Huodan.
Take sheep fat (Yangzhi) that has not been exposed to water, roast it over fire, and apply it onto the Dan lesion, then dust with white powder (Baifen); this is highly effective and free from contraindications.