掉，摇也。眩，昏乱旋运也。风主动故也。所谓风气甚，而头目眩运者，由风木旺，必
是金衰不能制木，而木复生火，风火皆属阳，多为兼化，阳主乎动，两动相搏，则为之旋转
。故火本动也，焰得风则自然旋转。如春分至小满，为二之气，乃君火之位；自大寒至春分七
十三日，为初之气，乃风木之位，故春分之后，风火相搏，则多起飘风，俗谓之旋风是也，
四时多有之。由五运六气千变万化，冲荡击搏，推之无穷，安得失时而便谓之无也。但有微
甚而已。人或乘车跃马、登舟环舞而眩运者，其动不正，而左右纡曲，故《经》曰∶曲直动
摇，风之用也。眩运而呕吐者，风热甚故也。
人近火气者，微热则痒，热甚则痛，附近则灼而为疮，皆火之用也。或痒痛如针轻刺者
，犹飞迸火星灼之然也。痒者，美疾也。故火旺于夏，而万物蕃鲜荣美也。炙之以火，渍之
以汤，而痒转甚者，微热之所使也；因而痒去者，热令皮肤纵缓，腠理开通，阳气得泄，热
散而去故也。或夏热皮肤痒，而以冷水沃之不去者，寒能收敛，腠理闭密，阳气郁结，不能
散越，怫热内作故也。痒得爬而解者，爬为火化，微则亦能令痒；甚则痒去者，爬令皮肤辛
辣，而属金化，辛能散，故金化见则火力分而解矣。或云痛为实，痒为虚者，非谓虚为寒也
，正谓热之微甚也。或疑疮疡皆属火热。而反腐烂出脓水者，何也？犹骨肉果菜，至于热极
，则腐烂而溃为污水也。溃而腐烂者，水之化也。所谓五行之理，过极则胜己者反来制之，
故火热过极，则反兼于水化。又如盐能固物，令不腐烂者，咸寒水化，制其火热，使不过
极，故得久固也。万物皆然。
掉，就是摇动。眩，就是昏乱、旋转的感觉。这是因为风性主动的缘故。所谓风气盛而头目眩晕的，是由于肝木之气过旺，必定是肺金衰弱不能制约肝木，而肝木又滋生心火，风和火都属于阳，往往相互兼化，阳主运动，两种动的力量相互搏击，就会产生旋转感。所以火本性就是动的，火焰遇到风就会自然旋转。比如从春分到小满，是二之气，属于君火的位序；自大寒到春分共七十三天，是初之气，属于风木的位序，所以春分之后，风与火相互搏击，就容易产生旋风，也就是俗称的旋风，四季中经常有这种现象。由于五运六气千变万化，冲荡击搏，推演起来无穷无尽，怎么能因为某个时候没有发生就说是没有呢？只是有轻微和严重之分罢了。有人乘车、骑马、坐船或旋转跳舞而感到眩晕的，是因为他们的运动不正直，而是左右迂回曲折，所以《黄帝内经》说：曲伸动摇，是风的作用。眩晕并且呕吐的，是因为风热太盛。
人靠近火源时，感觉微热就会发痒，热得很厉害就会疼痛，靠得太近就会灼伤皮肤形成疮疡，这都是火的作用。有的痒痛像针轻轻刺一样，就像飞迸的火星灼烧那样。痒，是一种轻微的病态表现。所以火在夏季旺盛，万物生长得繁茂鲜艳美丽。用火烧炙，或用热水浸泡，如果痒反而加重，这是微热作用的结果；如果因此痒消失了，是因为热使皮肤松弛舒缓，腠理（皮肤纹理及汗孔）开通，阳气得以宣泄，热散去了所以就好了。有的人夏天皮肤痒，用冷水浇洗却止不住，这是因为寒性能收敛，使腠理闭密，阳气郁结在内，不能散发，导致郁热在体内产生。抓挠后痒能缓解，是因为抓挠产生了摩擦生热（火化），轻微时也能让人发痒；严重时能止痒，是因为抓挠使皮肤产生辛辣感，这属于金的性质，辛能发散，所以当金的性质显现时，火势分散而解除了。有人说痛是实证，痒是虚证，这并不是说虚就是寒，而是指热的轻微与严重。有人怀疑疮疡既然都属于火热，那为什么有的会腐烂流脓水呢？就像骨肉水果，到了热极的时候，就会腐烂溃烂变成污水。溃烂腐烂，是水的气化表现。所谓五行的道理，达到极端就会克制它自己的事物反过来制约它，所以火热达到极端，就会反兼有水的气化。又比如盐能固定物体，使其不腐烂，这是因为咸寒的水气化，制约了火热，使其不过于极端，所以能长久保存。万物都是这样。
All wind-induced tremors and dizziness belong to Liver Wood.
"Tiao" refers to shaking or trembling. "Xuan" refers to vertigo, confusion, and a sensation of spinning. This is because the nature of Wind is movement. When excessive Wind causes dizziness and vertigo in the head and eyes, it is due to the exuberance of Liver Wood. This inevitably implies that Metal (Lung) is deficient and unable to control Wood, leading Wood to generate Fire. Both Wind and Fire belong to Yang; they often transform into one another. Since Yang governs movement, the collision of two moving forces results in rotation. Thus, Fire inherently possesses motion; when flames encounter Wind, they naturally rotate. For instance, from the Spring Equinox to the Beginning of Summer (Xiaoman), this is the second Qi phase, corresponding to the position of Ministerial Fire. From Great Cold (Dahan) to the Spring Equinox, spanning seventy-three days, is the first Qi phase, corresponding to the position of Wind Wood. Therefore, after the Spring Equinox, the interaction between Wind and Fire frequently generates whirlwinds, commonly known as cyclones, which occur throughout the four seasons. Due to the myriad changes of the Five Movements and Six Qis, with their surging impacts and endless derivations, how can one claim their absence merely because they do not manifest at a specific time? There are only degrees of severity. If a person experiences vertigo while riding in a carriage, on horseback, in a boat, or while dancing in circles, it is because their movement is not straight but rather winding and curved. Hence, the *Classic* states: "Bending and stretching, shaking and moving—these are the functions of Wind." Vertigo accompanied by vomiting is caused by excessive Wind-Heat.
All pain, itching, sores, and ulcers belong to Heart Fire.
When people approach fire, slight heat causes itching, intense heat causes pain, and close proximity causes burning and the formation of sores; all these are manifestations of Fire. Itching and pain resembling light needle pricks are akin to being scorched by flying sparks. Itching is considered a milder pathological state. Thus, Fire is prosperous in summer, causing all things to grow luxuriantly and beautifully. If applying heat via moxibustion or soaking in hot water exacerbates itching, it is due to the effect of slight heat. Conversely, if itching subsides, it is because heat relaxes the skin, opens the interstices (Couli), allows Yang Qi to dissipate, and thus the heat scatters and departs. In cases where summer skin itching persists despite washing with cold water, it is because Cold has a contracting nature, closing the interstices and causing Yang Qi to stagnate internally without dispersing, thereby generating constrained Heat within. Scratching provides relief because scratching generates frictional heat (Fire transformation); mildly, it may induce itching, but severely, it relieves itching because the resulting sensation is pungent/spicy, belonging to the Metal transformation. Pungency promotes dispersion; thus, when Metal characteristics appear, the Fire energy divides and resolves. Some argue that pain indicates Excess and itching indicates Deficiency; however, this does not mean Deficiency equates to Cold, but rather refers to the intensity of Heat. One might question why sores and ulcers, attributed to Fire-Heat, sometimes rot and discharge pus and fluid. This is analogous to flesh, bone, fruit, or vegetables: when subjected to extreme heat, they rot, ulcerate, and turn into foul liquid. Ulceration and putrefaction represent the transformation of Water. The principle of the Five Elements dictates that when a force reaches an extreme, the element that controls it counteracts it. Therefore, when Fire-Heat reaches an extreme, it may exhibit characteristics of Water transformation. Similarly, salt preserves objects and prevents rotting because its salty-cold Water nature suppresses Fire-Heat, preventing it from reaching extremes, thus ensuring longevity. This applies to all things.