《发明》云∶治风当通因通用，惟宜宣发以散之，不可便以苦寒之药妄下，龙、
麝、朱砂、牛黄诸镇坠之药泻之。若风本外邪，惟宜宣散，此风在表之时也。如伤寒中
风，传入于胃，亦未尝不可下。论中便字、妄字，可见其意。便者，有早与急之义；妄
者，谓有不当下之义。
如小便少，不可以药利之。既以自汗，则津液外亡，小便自少。若利之，使荣卫枯
竭，无以制火，烦热愈甚。当俟热退汗止，小便自行也。兼此证乃阳明经。大忌利小便。
中风大率主血虚有痰，治痰为先，次养血行血。或属虚，挟火（一作痰）与湿，又须分气
虚、血虚。半身不遂，大率多痰，在左属死血瘀（一作少）血，在右属痰与热，并气虚。左以
四物汤加桃仁、红花、竹沥、姜汁，右以二陈汤、四君子汤等加竹沥、姜汁。气虚卒
倒者，用参者补之。有痰，浓煎参汤，加竹沥、姜汁。血虚用四物汤，
俱用姜汁炒，恐泥痰故也。有痰，再加竹沥、姜汁入内服。能食者，去竹沥加荆
沥。肥白人多湿，少用乌头、附子行经。凡用乌、附，必用童便煮过，以杀其毒。初昏
倒，急捏人中至醒，然后用痰药，以二陈汤、四君子汤、四物汤加减用。瘦人阴虚
火热，用四物汤加竹沥、黄芩、黄柏。有痰者，加痰药。治痰气实而能食，用荆
沥。气虚少食，用竹沥。此二味开经络行血气故也。入四物汤，必用姜汁助之。遗尿属气
虚，以参、 补之。筋枯者，举动则痛，是无血不能滋养其筋，不治也。《脉诀》内言诸
不治证∶口开手撒，眼合遗尿，吐沫直视，喉如鼾睡、肉脱筋痛、发直、摇头上窜、面亦
如妆、或头面青黑，汗缀如珠，皆不治。
《医林改错》（注：此处原文为《发明》，通常指李东垣《医学发明》或相关著作，依原文直译）中说：治疗风病应当遵循“通因通用”的原则，适宜采用宣发散邪的方法来疏散风邪，不可以随意使用苦寒性质的药物进行攻下，也不可用龙骨、麝香、朱砂、牛黄等具有镇坠作用的药物来泻实。如果风邪本是外感之邪，适宜用宣散法，这是风邪在肌表的时候。例如伤寒病中的中风证，若传入胃腑，也并非绝对不能使用下法。文中使用的“便”字和“妄”字，可以看出其用意。“便”字，有过早或急躁的意思；“妄”字，是指有不应当使用下法的意思。
如果小便量少，不可以用药来利尿。既然已经自汗出，津液就会从体表流失，小便自然减少。如果强行利尿，会使营卫之气枯竭，无法制约火邪，烦热症状会更加严重。应当等待热退汗止之后，小便自然会恢复正常。兼有此证候的属于阳明经病，特别忌讳使用利小便的方法。
中风病大多主因为血虚伴有痰湿，治疗应以化痰为先，其次养血活血。或者属于虚证，夹杂火（一说为痰）与湿，又必须区分是气虚还是血虚。半身不遂，大多多由痰引起，左侧发病属于死血瘀滞（一说为血少），右侧发病属于痰与热，并伴有气虚。左侧病变用四物汤加入桃仁、红花、竹沥、姜汁；右侧病变用二陈汤、四君子汤等加入竹沥、姜汁。气虚导致突然昏倒者，用人参来补益。如果有痰，将人参浓煎成汤，加入竹沥、姜汁。血虚用四物汤，所有药材都用姜汁炒制，恐怕会滋腻生痰的缘故。如果有痰，再加竹沥、姜汁内服。能进食的人，去掉竹沥，加入荆沥。体型肥胖面白的人多湿气，应少用乌头、附子来通行经络。凡是使用乌头、附子，必须用童子尿煮过，以消除其毒性。初起昏倒时，急忙掐按人中穴直到苏醒，然后再用化痰药，根据情况加减使用二陈汤、四君子汤、四物汤。瘦人阴虚且火热旺盛，用四物汤加入竹沥、黄芩、黄柏。有痰的，加入化痰药。痰气实证且能进食的，用荆沥。气虚且食量少的，用竹沥。这两味药能开通经络、运行气血，所以在使用四物汤时，必须用姜汁来辅助。遗尿属于气虚，用人参、黄芪来补益。筋脉干枯者，活动时疼痛，这是因为无血滋养筋脉，属于不治之症。《脉诀》中提到的各种不治之证：口张手撒，眼闭遗尿，吐沫直视，喉间声音如打鼾，肌肉脱陷筋脉疼痛，头发直立，摇头上窜，面色如妆饰般异常，或头面部青黑，汗水如珠串般凝结，都属于不治之症。
The *Fa Ming* (Invention) states: In treating wind disorders, one should follow the principle of "treating obstruction with unblocking agents" (Tong Yin Tong Yong), and it is appropriate to use methods that disperse and ventilate to scatter the pathogen. One must not recklessly administer bitter-cold herbs for purgation, nor use heavy-settling and descending herbs such as Long Gu (Fossilized Bones), She Xiang (Musk), Zhu Sha (Cinnabar), and Niu Huang (Calculus Bovis) to drain excess. If the wind pathogen is originally an external invasion, dispersing and venting is the proper approach; this applies when the wind is at the exterior level. For instance, in Taiyang Wind Strike (Taiyang Zhong Feng) within Shanghan (Cold Damage) diseases, if the pathogen transmits to the Stomach, purgation is not absolutely contraindicated. The use of the characters "bian" (convenient/precipitate) and "wang" (reckless/false) in the text reveals its intent. "Bian" implies acting too early or hastily; "wang" implies using a method that is inappropriate, such as purgation when it is not indicated.
If urine output is scant, diuretic drugs should not be used. Since spontaneous sweating has occurred, body fluids are lost from the exterior, leading to naturally reduced urine volume. If diuretics are forced, Ying (Nutritive Qi) and Wei (Defensive Qi) will become depleted, failing to control Fire, thereby exacerbating irritability and heat. One should wait until the fever subsides and sweating stops, after which urination will normalize. This syndrome belongs to the Yangming Channel; the use of diuretics is strictly prohibited.
Wind strike (Zhong Feng) is generally caused by Blood deficiency accompanied by Phlegm; treatment should prioritize resolving Phlegm, followed by nourishing and invigorating Blood. It may also present as a deficiency pattern complicated by Fire (or Phlegm) and Dampness, requiring differentiation between Qi deficiency and Blood deficiency. Hemiplegia is mostly due to Phlegm. Lesions on the left side are attributed to stagnant Blood (or insufficient Blood), while lesions on the right side are attributed to Phlegm-Heat combined with Qi deficiency. For left-sided conditions, Si Wu Tang (Four Substances Decoction) is added with Tao Ren (Peach Kernel), Hong Hua (Safflower), Zhu Li (Bamboo Sap), and Jiang Zhi (Ginger Juice). For right-sided conditions, Er Chen Tang (Two Aged Herbs Decoction) and Si Jun Zi Tang (Four Gentlemen Decoction) are used, added with Zhu Li and Jiang Zhi. For sudden collapse due to Qi deficiency, Shen (Ginseng) is used to tonify. If Phlegm is present, Shen is decocted strongly, added with Zhu Li and Jiang Zhi. For Blood deficiency, Si Wu Tang is used. All herbs are stir-fried with Ginger Juice to prevent cloying and generating Phlegm. If Phlegm is present, Zhu Li and Jiang Zhi are additionally added for oral administration. If the patient can eat, Zhu Li is removed and Jing Li (Vitex Sap) is added. Obese individuals with white complexions tend to have Dampness; Wutou (Aconite Root) and Fuzi (Prepared Aconite Root) should be used sparingly to unblock meridians. Whenever Wutou or Fuzi are used, they must be boiled in Tong Bian (Child's Urine) to reduce their toxicity. In cases of initial unconsciousness, urgently pinch the Renzhong acupoint until consciousness returns, then administer Phlegm-resolving medicines, modifying Er Chen Tang, Si Jun Zi Tang, and Si Wu Tang as needed. Thin individuals with Yin deficiency and hyperactive Fire should be treated with Si Wu Tang added with Zhu Li, Huang Qin (Scutellaria Root), and Huang Bai (Phellodendron Bark). If Phlegm is present, add Phlegm-resolving herbs. For Phlegm-Qi excess patterns where the patient can eat, use Jing Li. For Qi deficiency with poor appetite, use Zhu Li. These two substances open the meridians and promote the circulation of Qi and Blood. When added to Si Wu Tang, Ginger Juice must be used to assist. Enuresis is due to Qi deficiency and should be treated with Shen (Ginseng) and Huang Qi (Astragalus Root) to tonify. Withered sinews cause pain upon movement; this indicates Blood failure to nourish the sinews and is incurable. The *Mai Jue* (Pulse Mantra) lists various incurable syndromes: mouth open and hands relaxed, eyes closed with enuresis, foaming at the mouth with fixed gaze, snoring-like sounds in the throat, muscle wasting and sinus pain, erect hair, head shaking with upward deviation, facial appearance like makeup, or cyanotic-black head and face, and sweat beads like pearls; all are considered incurable.