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（太阳入阳明去路）若脉微弱汗出恶风者不可服也服
之则厥逆筋惕肉 此为逆也以真武汤救之（方在少阴十九太阳入少阴去路）
营性发扬而寒性固涩伤寒营欲发而寒闭之故脉紧而无汗卫性敛闭而风性疏泄中风卫欲闭而风泄之故脉缓而有汗太阳
中风脉紧身痛寒热无汗脉证悉同伤寒此卫阳素旺气闭而血不能泄也卫气遏闭营郁热甚故见烦躁大青龙汤甘草大枣补其脾
精生姜杏仁降其肺气麻桂泄其营卫之郁闭石膏清神气之烦躁也盖气欲闭而血欲泄血强而气不能闭则营泄而汗出气强而血
不能泄则营闭而无汗营热内郁外无泄路是以脉紧身痛寒热无汗而生烦躁异日之白虎承气诸证皆以经热之内传者也早以青
龙发之则内热不生矣若脉微弱而汗出恶风者中风之脉证如旧而阳虚阴旺不可服此服之汗出亡阳则四肢厥逆筋惕肉 为害
非轻矣盖四肢秉气于脾胃阳亡土败四肢失温所以逆冷筋司于肝肝木生于肾水而长于脾土水寒土湿木郁风动故筋脉振惕而
皮肉 动真武汤苓术燥土而泄湿附子温经而驱寒芍药清肺而息风也
麻黄（六两） 桂枝（二两） 甘草（二两炙） 大枣（十二枚） 生姜（三两） 杏仁（五十枚） 石膏（鸡子
大一块打碎）
上七味以水九升先煮麻黄减二升去上沫内诸药煮取三升温服一升取微似汗汗出多者温粉朴之（牡蛎粉止身汗）一服
汗出者停后服汗多亡阳遂虚恶风烦躁不得眠也
太阳中风，脉象浮紧，发热恶寒，身体疼痛，无汗且烦躁的，用大青龙汤主治（这是太阳经邪气向阳明经传变的去路）。如果脉象微弱，有汗出且怕风的，不可服用。服用了就会造成四肢厥冷、筋肉跳动和肌肉瞤动，这属于误治。应当用真武汤来救治（方剂见少阴篇第十九条，这是太阳经邪气向少阴经传变的去路）。
营气的性质是发扬外散的，而寒气的性质是固涩收敛的。伤寒时，营气想要发散却被寒气闭塞，所以脉象紧而且无汗；卫气的性质是敛闭固守的，而风气的性质是疏泄开放的。中风时，卫气想要闭合却被风气泄散，所以脉象缓而且有汗。
太阳中风出现脉紧、身痛、寒热、无汗，这些脉证与伤寒完全相同，这是因为卫阳素来旺盛，气机闭塞导致血液不能宣泄。卫气被遏止闭塞，营气郁结化热严重，所以出现烦躁。大青龙汤中，甘草和大枣补益脾精，生姜和杏仁降泄肺气，麻黄和桂枝宣泄营卫的郁闭，石膏清解神气的烦躁。大概气机想要闭塞而血液想要宣泄，如果血强而气不能闭塞，则营气外泄而出汗；如果气强而血不能宣泄，则营气闭塞而无汗。营热在内郁结，外部没有宣泄的路径，因此出现脉紧、身痛、寒热、无汗并产生烦躁。日后的白虎汤证、承气汤证等，都是因为经热内传所致。如果在早期就用大青龙汤发散，那么内热就不会产生了。
如果脉象微弱且有汗出、怕风，这是中风原本的脉证，此时阳气虚弱而阴气偏旺，不可服用此方。服用了就会因汗出过多而导致亡阳，出现四肢厥逆、筋肉跳动、肌肉瞤动，危害就不轻了。大概四肢禀受脾胃之气，阳气亡失、土气败坏，四肢失去温煦，所以逆冷。筋脉由肝所主，肝木生于肾水而长于脾土，水寒土湿导致木气郁结、风气妄动，所以筋脉震颤跳动而皮肉瞤动。真武汤中，茯苓和白术燥湿健脾以泄湿邪，附子温通经脉以驱散寒邪，芍药清肺平肝以平息风动。
麻黄（六两） 桂枝（二两） 甘草（二两，炙） 大枣（十二枚） 生姜（三两） 杏仁（五十枚） 石膏（如鸡蛋大小一块，打碎）
以上七味药，用水九升，先煮麻黄，减少二升，撇去上浮的泡沫，加入其余药物，煮取三升。每次温服一升，取微似出汗的效果。如果汗出过多，用温粉扑身（牡蛎粉可止住全身出汗）。服一次药后若已出汗，停服后面的药。如果汗多导致亡阳遂致虚损，会出现怕风、烦躁、不得安眠等症状。
Taiyang wind-stroke with a floating-tight pulse, fever and aversion to cold, body pain, absence of sweating, and irritability should be treated with Da Qing Long Tang (Cyan Dragon Decoction) (This represents the pathway for Taiyang pathogenic factors to transmit to Yangming). If the pulse is faint and weak, with sweating and aversion to wind, it must not be administered. Administration would result in cold extremities (Jue Ni), twitching of sinews, and quivering of muscles, which constitutes a therapeutic error. It should be rescued with Zhen Wu Tang (True Warrior Decoction) (Formula found in Shaoyin Chapter 19; this represents the pathway for Taiyang pathogenic factors to transmit to Shaoyin).
The nature of Ying (Nutritive Qi) is to expand and disperse, whereas the nature of Cold is to consolidate and astringe. In Cold damage (Shang Han), Ying Qi desires to disperse but is closed by Cold, resulting in a tight pulse and absence of sweating. The nature of Wei (Defensive Qi) is to gather and close, whereas the nature of Wind is to vent and discharge. In wind-strike, Wei Qi desires to close but is discharged by Wind, resulting in a slow pulse and presence of sweating.
Taiyang wind-stroke presenting with a tight pulse, body pain, alternating chills and fever, and absence of sweating shares identical pulse and symptom patterns with Cold damage. This occurs because Wei Yang is inherently vigorous, causing Qi stagnation that prevents Blood from venting. When Wei Qi is obstructed and closed, Ying Qi becomes severely郁 (stagnant) and generates heat, thus manifesting as irritability. In Da Qing Long Tang, Gan Cao (Licorice Root) and Da Zao (Jujube Fruit) tonify Spleen essence; Sheng Jiang (Fresh Ginger) and Xing Ren (Apricot Seed) descend Lung Qi; Ma Huang (Ephedra Herb) and Gui Zhi (Cinnamon Twig) vent the stagnation and closure of Ying and Wei; Shi Gao (Gypsum Fibrosum) clears the irritability of Shen (Spirit). Generally, if Qi desires to close while Blood desires to vent, and Blood is strong while Qi cannot close, Ying will vent and sweating will occur. If Qi is strong while Blood cannot vent, Ying will close and sweating will not occur. When Ying-heat is internally stagnant with no external outlet, symptoms such as tight pulse, body pain, alternating chills and fever, absence of sweating, and irritability arise. Subsequent conditions such as Bai Hu Tang (White Tiger Decoction) syndrome or Cheng Qi Tang (Order the Qi Decoction) syndrome all result from the internal transmission of channel heat. If dispersed early with Da Qing Long Tang, internal heat would not generate.
If the pulse is faint and weak, accompanied by sweating and aversion to wind, these are the original pulse and symptoms of wind-strike. At this stage, Yang is deficient and Yin is flourishing, so this formula must not be taken. Taking it would cause excessive sweating leading to loss of Yang, resulting in cold extremities, twitching of sinews, and quivering of muscles, causing significant harm. Limbs derive their Qi from the Spleen and Stomach; when Yang is lost and Earth energy fails, limbs lose warmth and become cold. Sinews are governed by the Liver; Liver Wood is born from Kidney Water and grows on Spleen Earth. Cold Water and damp Earth cause Wood stagnation and Wind agitation, leading to trembling sinews and quivering flesh. In Zhen Wu Tang, Fu Ling (Poria) and Bai Zhu (Atractylodes Rhizome) dry dampness and strengthen Earth to drain damp; Fu Zi (Prepared Aconite Root) warms meridians and expels cold; Shao Yao (Peony Root) clears the Lungs and extinguishes Wind.
Ma Huang (Ephedrae Herba, 6 liang), Gui Zhi (Cinnamomi Ramulus, 2 liang), Gan Cao (Glycyrrhizae Radix et Rhizoma Praeparata cum Melle, 2 liang, honey-fried), Da Zao (Ziziphi Jujubae Fructus, 12 pieces), Sheng Jiang (Zingiberis Rhizoma Recens, 3 liang), Xing Ren (Armeniacae Semen Amarum, 50 pieces), Shi Gao (Gypsi Fibrosum, one piece the size of an egg, crushed).
Take the above seven ingredients, add nine sheng of water, first boil Ma Huang until reduced by two sheng, remove the foam on the surface, then add the remaining herbs. Boil until three sheng remain. Take one sheng warm. Aim for slight sweating. If sweating is excessive, apply warm powder to the body (Mu Li Fen/Ostreae Concha Powder can stop generalized sweating). If sweating occurs after the first dose, stop taking the remaining medicine. Excessive sweating may lead to Yang loss and subsequent deficiency, manifesting as aversion to wind, irritability, and inability to sleep.