麻出浑身似火烧。毒邪壅甚急难消。解肌只许皮肤暖。救里宜令便溺调。
麻本火候。非热则不得出。麻疹欲出。则遍身发热。或烦躁。或头疼。或身拘急。及既出。则身
便凉。清此一层。麻随收矣。若麻既出。而热甚不减。此毒邪壅遏。宜以古方大青汤去甘草解其
表。如便涩者。以古方黄连解毒汤加牛蒡子、连翘、川木通、枳壳、石膏、知母。或以大连翘汤。
以地骨皮易柴胡去赤芍治之。若大便不通者。以河间凉膈散（见二十六条）去甘草。加牛蒡子以
解其里。既出发热不退。饮食少进者。此毒逼胃。宜以加味地骨皮散去赤芍、甘草。加酒蒸石斛
治之。
朱曰 热甚不减。总是毒邪壅遏。古方大青汤、大连翘汤、加味地骨皮散方中。或用荆
芥。或用防风。或用葛根。即托邪外出。不敢一味清凉。阻塞向外之机也。
古方大青汤 治斑疹解毒良方。
大青 元参 知母 石膏 木通 生地黄 荆芥穗 鲜地骨皮 甘草 淡竹叶十二片引。
古方黄连解毒汤 治火毒。痘麻通用。
黄连 黄柏 黄芩 栀仁 水煎服 加大黄。名金华丸。润肠泻热。
大连翘汤 解里热良方。
连翘 防风 瞿麦 荆芥穗 木通 车前子 当归 蝉蜕 黄芩 滑石 栀仁 柴胡
赤芍药（各等分） 加紫草茸（五分） 水煎。食前温服。
加味地骨皮散
地骨皮（三钱） 桑白皮 麦冬（各二钱） 葛根 柴胡 赤芍药（各一钱） 生犀角屑 甘草（各五分）
水煎服。
麻疹发出后，全身皮肤感觉像火烧一样烫。这是因为毒邪壅盛，难以迅速消除。治疗时，解肌透疹只允许皮肤保持温暖；救里（调理内脏）则应当使大小便通畅调和。
麻疹的发出依赖于体内的“火候”（阳气与热势），如果没有足够的热势，麻疹就无法透出。在麻疹欲出未出之际，患者会遍身发热，或者出现烦躁不安、头痛、身体拘急不舒等症状。等到麻疹已经发出之后，身体热度自然会下降变凉。如果能清楚把握这一层规律，麻疹就能顺利收没。如果麻疹已经发出，但高热仍然不减，这是毒邪壅滞遏伏所致，适宜使用古方大青汤去掉甘草来解除表邪。如果出现小便涩痛不畅的情况，可以使用古方黄连解毒汤，加入牛蒡子、连翘、川木通、枳壳、石膏、知母。或者使用大连翘汤，用地骨皮代替柴胡，并去掉赤芍药来进行治疗。如果大便不通畅的，可以使用河间凉膈散（参见第二十六条），去掉甘草，加入牛蒡子来解除里邪。如果麻疹发出后发热不退，且饮食摄入减少的，这是毒邪逼迫胃腑所致，适宜使用加味地骨皮散去赤芍、甘草，加入酒蒸石斛进行治疗。
朱氏说：高热持续不减，总是因为毒邪壅滞遏伏。在古方大青汤、大连翘汤、加味地骨皮散的方剂中，有的使用荆芥，有的使用防风，有的使用葛根，这些都是为了托举毒邪向外排出，不敢单纯使用一味清凉的药物，以免阻塞毒邪外透的机转。
古方大青汤：是治疗斑疹解毒的良好方剂。
组成：大青、元参、知母、石膏、木通、生地黄、荆芥穗、鲜地骨皮、甘草。煎服时加淡竹叶十二片作为引经药。
古方黄连解毒汤：治疗火毒，痘疮和麻疹通用。
组成：黄连、黄柏、黄芩、栀仁。水煎服用。如果加大黄，则名为金华丸，具有润肠泻热的功效。
大连翘汤：是解除里热的良好方剂。
组成：连翘、防风、瞿麦、荆芥穗、木通、车前子、当归、蝉蜕、黄芩、滑石、栀仁、柴胡、赤芍药（以上各等分）。加入紫草茸五分。水煎，饭前温服。
After the eruption of measles, the whole body feels as hot as if burning with fire. This is because pathogenic toxins are severely congested and difficult to eliminate quickly. For resolving the muscle layer (Ji) to promote eruption, only allowing the skin to remain warm is permitted; for saving the interior (Liu) by regulating internal organs, it is appropriate to ensure the smoothness of urination and defecation.
The eruption of measles relies on "fire energy" (Yang Qi and heat momentum); without sufficient heat, measles cannot erupt. When measles are about to erupt, the patient experiences fever throughout the body, or may exhibit restlessness, headache, or bodily stiffness and tension. Once the measles have erupted, the body temperature naturally decreases and becomes cool. If this principle is clearly understood, the measles will subside smoothly. If the measles have erupted but high fever persists without reduction, this indicates that pathogenic toxins are congested and obstructed. It is appropriate to use the ancient formula Daqing Tang (Cyan Blue Decoction), removing Gancao (Licorice Root), to resolve the exterior pathogens. If there is difficulty or pain in urination, the ancient formula Huanglian Jiedu Tang (Coptis Decoction for Resolving Toxicity) can be used, adding Niubangzi (Arctii Fructus), Lianqiao (Forsythiae Fructus), Chuan Mutong (Akebiae Caulis), Zhike (Aurantii Fructus), Shigao (Gypsum Fibrosum), and Zhimu (Anemarrhenae Rhizoma). Alternatively, Dalianqiao Tang (Large Forsythia Decoction) can be used, substitiying Digupi (Lycii Cortex) for Chaihu (Bupleuri Radix) and removing Chishao (Paeoniae Radix Rubra). If defecation is obstructed, Hejian Liangge San (Cooling Chamber Powder from Liu Wansu's School), removing Gancao (Licorice Root) and adding Niubangzi (Arctii Fructus), should be used to resolve interior pathogens. If fever persists after eruption and food intake is reduced, this indicates that toxins are pressing upon the Stomach. It is appropriate to use Jiawei Digupi San (Modified Lycium Bark Powder), removing Chishao (Paeoniae Radix Rubra) and Gancao (Licorice Root), and adding Jiuzheng Shihu (Dendrobii Caulis steamed with wine).
Zhu stated: Persistent high fever is always due to the congestion and obstruction of pathogenic toxins. In the formulas of the ancient Daqing Tang, Dalianqiao Tang, and Jiawei Digupi San, some use Jingjie (Schizonepetae Spica), some use Fangfeng (Saposhnikoviae Radix), and some use Gegen (Puerariae Lobatae Radix). These herbs are used to push the toxins outward. One dare not use purely cooling herbs indiscriminately, as this would block the mechanism of toxin expulsion.
Ancient Formula Daqing Tang (Cyan Blue Decoction): A good prescription for detoxification in treating macules and rashes.
Ingredients: Daqing (Isatidis Folium), Yuan Shen (Scrophulariae Radix), Zhi Mu (Anemarrhenae Rhizoma), Shi Gao (Gypsum Fibrosum), Mu Tong (Akebiae Caulis), Sheng Di Huang (Rehmanniae Radix), Jingjie Sui (Schizonepetae Spica), Xian Digupi (Fresh Lycii Cortex), Gan Cao (Glycyrrhizae Radix et Rhizoma). Use twelve leaves of Dan Zhuye (Phyllostachydis Folium) as a guiding herb.
Ancient Formula Huanglian Jiedu Tang (Coptis Decoction for Resolving Toxicity): Treats Fire Toxin, commonly used for both smallpox and measles.
Ingredients: Huang Lian (Coptidis Rhizoma), Huang Bo (Phellodendri Cortex), Huang Qin (Scutellariae Radix), Zhi Ren (Gardeniae Semen). Decoct in water and take orally. Adding Da Huang (Rhei Radix et Rhizoma) creates the name Jinhua Wan (Golden Flower Pill), which moistens the intestines and purges heat.
Dalainqiao Tang (Large Forsythia Decoction): A good prescription for resolving interior heat.
Ingredients: Lian Qiao (Forsythiae Fructus), Fang Feng (Saposhnikoviae Radix), Qu Mai (Dianthi Herba), Jingjie Sui (Schizonepetae Spica), Mu Tong (Akebiae Caulis), Che Qian Zi (Plantaginis Semen), Dang Gui (Angelicae Sinensis Radix), Chan Tui (Cicadae Periostracum), Huang Qin (Scutellariae Radix), Hua Shi (Talcum), Zhi Ren (Gardeniae Semen), Chai Hu (Bupleuri Radix), Chi Shao Yao (Paeoniae Radix Rubra) (all in equal parts). Add Zi Cao Rong (Arnebiae Radix et Rhizoma cum Mucilage) 5 fen. Decoct in water and take warm before meals.
Modified Digupi San (Modified Lycium Bark Powder)
Ingredients: Di Gu Pi (Lycii Cortex) 3 qian, Sang Bai Pi (Mori Cortex) and Mai Dong (Ophiopogonis Tuber) each 2 qian, Ge Gen (Puerariae Lobatae Radix), Chai Hu (Bupleuri Radix), Chi Shao Yao (Paeoniae Radix Rubra) each 1 qian, Sheng Xi Jiao Xie (Rhino Cerios Cornu et Os Trachea fragment) and Gan Cao (Glycyrrhizae Radix et Rhizoma) each 5 fen. Decoct in water and take orally.