太阳病，发热恶寒，热多寒少，脉微弱者，此无阳也，不可更汗。宜桂枝二越婢一汤。太阳中风，脉浮
紧，发热恶寒，身疼痛，不汗出而烦躁者，大青龙汤主之。若脉微弱，汗出恶风者，不可服也。服之则厥逆
，筋惕肉 ，此为逆也。伤寒脉浮缓，身不疼，但重，乍有轻时。无少阴证者，大青龙汤主之。发汗后，不可
更行桂枝汤。若汗出而喘，无大热者，可与麻黄杏仁甘草石膏汤主之。下后，不可更行桂枝汤。若汗出而喘，
无大热者，可与麻黄杏仁甘草石膏汤主之。
按以上诸证，或表寒少而里热多，或无汗而烦躁，或有汗而喘促，均属表寒未解，里热已作，故以表寒里
热证统之。
桂枝二越婢一汤
桂枝（一钱七分） 芍药（一钱七分） 麻黄（一钱七分） 甘草（一钱七分）
大枣（二枚） 生姜（一钱七分） 石膏（二钱） 先煮麻黄去沫，纳诸药同煎，温服。按表有寒，里有热，
故用麻桂生姜以达表郁，用石膏以清里热，用芍药以清营热，用甘草大枣以补脾精也。
大青龙汤
麻黄（六钱） 桂枝（二钱） 甘草（二钱炙） 杏仁（十三枚） 石膏（四钱） 生姜
（三钱） 大枣（四枚） 先煮麻黄去沫，后入诸药煎，温服，取微似汗。汗多者，以温粉扑之。温粉即
白术、 本、川芎、白芷为末，米粉和扑之。按卫气遏闭营郁而生内热，故用甘草、大枣补其脾精，生姜、杏
仁降其肺气，麻、桂泄营卫之郁闭，石膏清内热之烦躁也。
麻黄杏仁甘草石膏汤
麻黄（四钱） 杏仁（十六枚） 甘草（二钱） 石膏（八钱） 先煮麻黄去沫，
后入诸药煎，温服。按汗后表寒未解，郁其肺气，热蒸皮毛，故用麻黄发表，杏仁降逆，石膏清金，甘草培土，
则表里俱解矣。
太阳病，出现发热、恶寒的症状，且热象重于寒象，脉象微弱，这是阳气不足的表现，不可再次使用发汗法。适宜使用桂枝二越婢一汤。
太阳中风证，脉象浮紧，发热恶寒，身体疼痛，无汗且伴有烦躁不安的，以大青龙汤主治。如果脉象微弱，出汗且怕风的，不可服用大青龙汤。若误服，会导致四肢厥冷，筋肉跳动抽搐，这属于治疗逆乱。
伤寒病，脉象浮缓，身体不痛，只是沉重，偶尔有减轻的时候。如果没有少阴病的证候，以大青龙汤主治。
经过发汗治疗后，不可再使用桂枝汤。如果出现出汗且气喘，体表没有明显高热的，可以用麻黄杏仁甘草石膏汤主治。
经过泻下治疗后，不可再使用桂枝汤。如果出现出汗且气喘，体表没有明显高热的，可以用麻黄杏仁甘草石膏汤主治。
按语：以上各种证候，有的是表寒轻微而里热较重，有的无汗且烦躁，有的有汗且气喘急促，都属于表寒未解、里热已生的情况，因此统称为表寒里热证。
桂枝二越婢一汤
桂枝（一钱七分） 芍药（一钱七分） 麻黄（一钱七分） 甘草（一钱七分）
大枣（两枚） 生姜（一钱七分） 石膏（二钱）。先煮麻黄去除浮沫，再加入其他药物共同煎煮，温服。按语：因为表有寒邪，里有热邪，所以用麻黄、桂枝、生姜来发散表郁，用石膏来清泄里热，用芍药来清营分之热，用甘草、大枣来补益脾气精微。
大青龙汤
麻黄（六钱） 桂枝（二钱） 甘草（二钱，炙） 杏仁（十三枚） 石膏（四钱） 生姜（三钱） 大枣（四枚）。先煮麻黄去除浮沫，后加入其他药物煎煮，温服，以取得微微似出汗的效果。如果出汗过多，可用温粉扑洒身体。温粉即由白术、藁本、川芎、白芷研成粉末，与米粉混合后扑洒。按语：因为卫气被遏制闭阻，营气郁结而生内热，所以用甘草、大枣补益脾气精微，生姜、杏仁降泄肺气，麻黄、桂枝宣泄营卫的郁闭，石膏清泄内热引起的烦躁。
麻黄杏仁甘草石膏汤
麻黄（四钱） 杏仁（十六枚） 甘草（二钱） 石膏（八钱）。先煮麻黄去除浮沫，后加入其他药物煎煮，温服。按语：发汗后表寒仍未解除，导致肺气郁滞，热气蒸腾于皮毛，所以用麻黄发表散邪，杏仁降逆平喘，石膏清肺金之热，甘草培补脾土，这样表里之邪都能解除。
Taiyang disease (disease of the Taiyang channel), characterized by fever and aversion to cold, with heat predominating over cold, and a faint pulse, indicates a deficiency of Yang Qi (deficiency of defensive and warming energy). Sweating methods should not be used again. Guizhi Er Yuebi Yi Tang (Cinnamon Twig Twice-Yuebi One Decoction) is appropriate.
In Taiyang Wind-stroke syndrome (Taiyang wind-pathogen invasion), if the pulse is floating and tight, accompanied by fever, aversion to cold, body pain, anhidrosis (absence of sweating), and irritability, Da Qing Long Tang (Major Blue Green Dragon Decoction) is the primary treatment. However, if the pulse is faint, there is sweating, and aversion to wind, Da Qing Long Tang must not be administered. Ingestion would lead to limb reversal-cold (cold extremities) and muscle twitching/tremors, which constitutes a therapeutic error.
In Cold Damage disease, if the pulse is floating and slow, the body feels heavy but not painful, and the heaviness occasionally alleviates, provided there are no Shaoyin syndrome signs, Da Qing Long Tang is indicated.
After sweating therapy, Guizhi Tang (Cinnamon Twig Decoction) should not be used again. If sweating and wheezing occur without significant surface heat, Mahuang Xingren Gancao Shigao Tang (Ephedra, Apricot Kernel, Licorice, and Gypsum Decoction) may be administered.
After purgative therapy, Guizhi Tang should not be used again. If sweating and wheezing occur without significant surface heat, Mahuang Xingren Gancao Shigao Tang may be administered.
Commentary: The aforementioned syndromes, whether presenting with slight exterior cold and abundant interior heat, or anhidrosis with irritability, or diaphoresis with panting, all belong to the category where exterior cold remains unresolved while interior heat has arisen. Thus, they are collectively categorized as Exterior-Cold and Interior-Heat Syndrome.
Guizhi Er Yuebi Yi Tang (Cinnamon Twig Twice-Yuebi One Decoction)
Guizhi (Cinnamomi Ramulus, 1.7 qian) Shaoyao (Paeoniae Radix Alba, 1.7 qian) Mahuang (Ephedrae Herba, 1.7 qian) Gancao (Glycyrrhizae Radix et Rhizoma, 1.7 qian)
Dazao (Ziziphi Jujubae Fructus, 2 pieces) Shengjiang (Zingiberis Rhizoma Recens, 1.7 qian) Shigao (Gypsi Fibrosus, 2 qian). Boil Mahuang first, remove foam, then add other herbs and decoct together. Take warm. Commentary: Since there is cold on the exterior and heat on the interior, Mahuang, Guizhi, and Shengjiang are used to disperse exterior constraint; Shigao clears interior heat; Shaoyao clears Ying-level heat; Gancao and Dazao tonify Spleen essence.
Da Qing Long Tang (Major Blue Green Dragon Decoction)
Mahuang (Ephedrae Herba, 6 qian) Guizhi (Cinnamomi Ramulus, 2 qian) Gancao (Glycyrrhizae Radix et Rhizoma, 2 qian, honey-fried) Xingren (Armeniacae Semen Amarum, 13 pieces) Shigao (Gypsi Fibrosus, 4 qian) Shengjiang (Zingiberis Rhizoma Recens, 3 qian) Dazao (Ziziphi Jujubae Fructus, 4 pieces). Boil Mahuang first, remove foam, then add other herbs and decoct. Take warm. Aim for a slight sweat. If sweating is excessive, apply Wenfen (Warm Powder) externally. Wenfen consists of Baizhu (Atractylodis Macrocephalae Rhizoma), Bencao (Ligustici Chuanxiong Rhizoma), Chuanxiong (Chuanxiong Rhizoma), and Baizhi (Angelicae Dahuricae Radix) ground into powder, mixed with rice flour for external application. Commentary: Since Wei-Qi (Defensive Qi) is obstructed and Ying-Qi (Nutritive Qi) is constrained generating internal heat, Gancao and Dazao tonify Spleen essence; Shengjiang and Xingren descend Lung Qi; Mahuang and Guizhi vent the constraint of Ying and Wei; Shigao clears internal heat causing irritability.
Mahuang Xingren Gancao Shigao Tang (Ephedra, Apricot Kernel, Licorice, and Gypsum Decoction)
Mahuang (Ephedrae Herba, 4 qian) Xingren (Armeniacae Semen Amarum, 16 pieces) Gancao (Glycyrrhizae Radix et Rhizoma, 2 qian) Shigao (Gypsi Fibrosus, 8 qian). Boil Mahuang first, remove foam, then add other herbs and decoct. Take warm. Commentary: After sweating, exterior cold remains unresolved, leading to Lung Qi constraint and heat steaming the skin and hair. Therefore, Mahuang releases the exterior, Xingren descends rebellious Qi, Shigao clears Lung Metal heat, and Gancao supports Earth (Spleen/Stomach), thereby resolving both exterior and interior conditions.