《素问·风论》帝曰∶风之伤人也，或为寒热，或为热中，或为寒中，或为疠风，或为偏枯，或为风也，
其病各异，其名不同，或内至五脏六腑，不知其解，愿闻其说。岐伯曰∶风气藏于皮肤之间，内不得通，外不
得泄，风者善行而数变，腠理开则洒然寒，闭则热而闷，其寒也则衰饮食，其热也则消肌肉，故使人 而不
能食，名曰寒热。
风由阳气所化，随寒热温凉而变。寒热之伤人，必由于风，故风为百病之长，善行而数变。如其藏于皮肤
之间，营卫不得通和，腠理开闭不常，以致阴阳相争，阴胜则寒而饮食减，阳胜则热而肌肉消，气血两伤，故
使人 而不能食，名曰寒热病也。 者，畏怯战 之状。
风气与阳明入胃，循脉而上至目内 ，其人肥，则
风气不得外泄，则为热中而目黄；人瘦，则外泄而寒，则为寒中而泣出。
同感风邪，因人之肥瘦不同，而为病各异，故凡邪之伤人，必随人身之气变化为病。若风由阳明而入于胃，
其人体盛肌浓，则风不得外泄，与水谷之气郁蒸而成湿热，随脉上行而至目黄也；瘦人肌薄腠疏，中宫阳气随
风邪而外泄，以致中寒，风气上行至目，则泣出也。
风气与太阳俱入，行诸脉俞，散于分肉之间，与卫气相干，其道不利，故使肌肉愤 而有疡，卫气有所碍
而不行，故其肉有不仁也。
太阳主一身之表而统营卫，风气入太阳，行诸脉俞，散于分肉，与卫气相干，使脉道不利，则营气不从，
逆于肉里，乃生痈肿；卫气碍而不行，则肌肉不知痛痒，为不仁也。
疠者，有营气热 ，其气不清，故使其鼻柱坏而色败，皮肤疡溃。风寒客于脉而不去，名曰疠风，或名曰
寒热。
疠者，邪热毒厉之气，腐其营脉，其气秽浊不清，上熏于鼻，故使鼻柱坏而色败，皮肤疡溃。初由风寒客
于脉中而不去，挟瘴恶之气所酿成，故名疠风，俗名大麻风，古名癞，最为恶病，其邪入骨，传延子孙，而方
书亦有治法也。
黄帝问道：风邪侵袭人体，有的导致寒热证，有的导致热中证，有的导致寒中证，有的导致疠风，有的导致偏枯，有的导致风病。这些病症各不相同，名称也不同，有的病邪深入五脏六腑，我不明白其中的道理，希望听听您的解释。岐伯回答说：风邪潜伏在皮肤之间，向内不能通达，向外不能宣泄。风性善于游走且变化多端，腠理开泄时则感到洒淅恶寒，腠理闭塞时则发热且胸闷。当表现为寒象时，食欲减退；当表现为热象时，肌肉消瘦。因此使人畏怯战栗而不能进食，称为寒热病。
风由阳气所化生，随寒、热、温、凉的变化而变化。寒热之邪伤人，必然通过风邪，所以风被称为“百病之长”，善于游走且变化多端。如果风邪潜伏在皮肤之间，营卫之气不能通畅调和，腠理开闭失常，导致阴阳相互争斗。阴气胜则发冷而饮食减少，阳气胜则发热而肌肉消瘦，气血两伤，因此使人畏怯战栗而不能进食，称为寒热病。“”是指畏怯战栗的状态。
风邪与阳明经之气一同入胃，沿经脉上行至目内眦。如果患者体型肥胖，风邪不得外泄，就会形成热中证，出现目黄；如果患者体型消瘦，风邪随汗外泄而致寒，就会形成寒中证，出现流泪。
同样感受风邪，因人体肥瘦不同，发病各异。所以凡是邪气伤人，必然随着人体之气的变化而转化为不同的疾病。如果风邪从阳明经进入胃中，患者体质壮实、肌肉丰厚，则风邪不得外泄，与水谷之气郁结蒸腾而成湿热，随经脉上行导致目黄；瘦人肌肤薄弱、腠理疏松，中焦阳气随风邪外泄，导致中寒，风气上行至目，则引起流泪。
风邪与太阳经之气一同侵入，运行于各经脉的俞穴，散布于分肉之间，与卫气相搏结，致使脉道不利，因此使肌肉肿胀并发生疮疡。卫气受到阻碍而不能运行，所以肌肉会出现麻木不仁。
太阳经主一身之表而统摄营卫，风邪侵入太阳经，运行于各经脉俞穴，散布于分肉之间，与卫气相搏结，使脉道不通利，则营气不从顺，逆乱于肌肉纹理之中，从而产生痈肿；卫气受阻而不能运行，则肌肉不知痛痒，称为不仁。
疠风，是由于营气热盛，其气秽浊不清，从而导致鼻梁塌陷、面色败坏、皮肤溃疡。风寒之邪客居在脉中而不离去，称为疠风，有时也称为寒热。
疠风，是邪热毒厉之气，腐蚀营脉，其气秽浊不清，向上熏蒸于鼻部，导致鼻梁塌陷、面色败坏、皮肤溃疡。起初由风寒客居于脉中而不离去，挟带瘴恶之气酿成，所以称为疠风，俗称大麻风，古称癞，是最为严重的恶疾。其邪气深入骨髓，甚至遗传子孙，但医书中也有治疗的方法。
Huangdi asked: When wind pathogen invades the human body, it may cause cold-heat syndrome (Han Re Bing), heat-in-the-middle syndrome (Re Zhong), cold-in-the-middle syndrome (Han Zhong), leprosy-like wind (Li Feng), hemiplegia (Pian Ku), or wind disease (Feng Bing). These diseases are different from each other and have different names. Some pathogens reach the five zang organs and six fu organs internally. I do not understand the explanation; I wish to hear your theory. Qibo replied: Wind pathogen hides between the skin and hair follicles. It cannot circulate internally nor be excreted externally. Wind is characterized by its ability to move rapidly and change frequently. When the interstices (Cou Li) open, one feels chilly and shivering; when they close, one experiences fever and chest stuffiness. In the case of cold predominance, appetite declines; in the case of heat predominance, muscles emaciate. Thus, the person becomes fearful and trembling, unable to eat, which is named cold-heat disease.
Wind is transformed from yang qi and changes according to cold, heat, warmth, and coolness. The injury caused by cold and heat must occur through wind; therefore, wind is considered the "chief of a hundred diseases," capable of moving rapidly and changing frequently. If wind hides between the skin, Ying (nutritive) and Wei (defensive) qi cannot circulate harmoniously. The opening and closing of the interstices become irregular, leading to a struggle between yin and yang. When yin prevails, there is cold and reduced food intake; when yang prevails, there is heat and muscle wasting. Both qi and blood are injured, causing fearfulness and trembling with an inability to eat, known as cold-heat disease. "Tan Han" refers to the state of fearfulness and trembling.
When wind pathogen enters the stomach along with the Qi of the Yangming channel, traveling up the meridians to the inner canthus of the eye: if the person is obese, the wind pathogen cannot be excreted externally, resulting in heat-in-the-middle syndrome with yellowing of the eyes; if the person is thin, the wind pathogen escapes externally with sweat, causing cold, resulting in cold-in-the-middle syndrome with tearing.
Although affected by the same wind pathogen, the diseases manifest differently due to variations in body constitution (obesity vs. thinness). Therefore, whenever pathogenic factors injure the body, they transform into diseases according to the changes in the body's qi. If wind enters the stomach via the Yangming channel, and the person has a robust physique with thick muscles, the wind cannot escape externally. It stagnates and steams together with the qi of food and drink, forming damp-heat that travels upward along the meridians to cause yellowing of the eyes. Conversely, thin individuals have thin skin and loose interstices; their middle jiao yang qi escapes externally with the wind pathogen, leading to cold in the middle. As wind qi ascends to the eyes, it causes tearing.
When wind pathogen enters together with the Taiyang channel, circulating through the shu points of various meridians and scattering between the muscle intervals, it interferes with Wei (defensive) qi. This obstruction makes the meridian pathways unfavorable, causing the muscles to swell and develop sores. Because Wei qi is hindered and cannot flow, the muscles become insensible (Bu Ren).
The Taiyang channel governs the exterior of the whole body and controls Ying and Wei qi. When wind enters the Taiyang channel, circulates through the shu points, and scatters between the muscle intervals, it interferes with Wei qi. This obstructs the meridian pathways, causing Ying qi to fail to follow smoothly and reverse into the muscle tissue, generating carbuncles and swelling. When Wei qi is blocked and cannot circulate, the muscles lose sensation of pain and itch, a condition called insensibility (Bu Ren).
Leprosy-like wind (Li Feng) occurs when Ying qi becomes hot and turbid, causing the nasal bridge to collapse, complexion to deteriorate, and skin to ulcerate. When wind-cold lodges in the vessels and does not depart, it is named leprosy-like wind, also sometimes called cold-heat.
"Leprosy" refers to the toxic heat pathogen corrupting the Ying vessels, creating turbid and foul qi that steams upward to the nose, causing the nasal bridge to collapse, complexion to deteriorate, and skin to ulcerate. Initially, wind-cold lodges in the vessels and remains, combining with miasmic and evil qi to form this condition. Hence it is named leprosy-like wind, commonly known as Hansen's disease (leprosy), and anciently called "Lei." It is the most severe malignant disease. Its pathogen penetrates the bones and can be transmitted to descendants, although medical texts do contain treatment methods for it.