头风即首风也。经曰∶首风之状，头面多汗，恶风，当先风一日则头痛甚，至其风日少愈。一风气循风府而
上则脑痛，曰脑风。经曰∶头风者，本风寒入于脑髓也。头痛数岁不愈，当犯大寒。其人素有痰火，风寒客之，
则热郁而瞀闷，似痛非痛，曰头晕。有目花黑暗，视定犹动，且身转耳聋，如立舟车之上，起则欲倒，甚而呕吐，
饮食罕御，此肝木为风所撼，鼓动其气，痰火随气上逆。倘因吐衄、崩漏而致，此脾虚不能收摄血气，使诸血失
道。或酒色过度，肾虚不能纳气，逆奔而上，或虚极乘寒得之，曰头眩。若头暴痛不可忍，有如劈如纹者，但名
头痛，深而久而愈，名头风亦可。痛风必害眼者，经曰春气在头，风气通于肝，肝窍开于
目故也。要当首辨六经，次厥痛、偏痛、真痛，次血虚、气虚、湿热、寒湿不等。如太阳头痛者，恶风寒，脉浮
紧，痛在巅顶两额角；少阳头痛者，寒热往来，脉弦，痛连耳根；阳明头痛者，发热自汗，脉浮大，痛在巨阳穴，
连目 齿颊；太阴头痛者，必有痰，体重或腹痛，脉沉迟，头重；少阴头痛者是寒气逆，为寒厥，脉沉小；厥阴
头痛者，吐痰沫，厥冷，脉浮缓，痛引目系。此六经头痛多挟外邪也。血虚头痛者，自鱼尾上攻，脉浮而无力；
气虚头痛者，耳鸣，九窍不利，脉沉濡；湿热头痛者，心烦恶热，头重而天阴转甚；寒湿头痛者，气上而不下，
或时泄，近湿热之物则稍松；偏头痛者，邪正相持，势不中立，邪气营运，正气则壅遏而痛，在左主风、主血虚，
在右主气、主痰热，亦兼有虚寒者；厥头痛者，所犯大寒至骨髓，髓以脑为主，脑逆故头痛，脉沉迟；真头痛者，
痛甚连脑户，手足寒至节，脉迟极而止，旦发夕死，夕发旦死。此七种头痛多由内生也。外此，若眉棱骨痛甚，
既而上攻头角、下注目睛者，有属心肝壅热，有属风痰上逆，有湿气内郁，有风寒外挟。才见光明则眶痛者，此
肝虚。痛而眼不可开，昼静夜剧，此脾胃停饮，土木不和。头痛旋去旋来，倏在此一点，在彼一片，此下虚上实，
游风流火。丹溪曰∶头痛多主于痰，甚者火，有可吐，有可下者。此未窥全豹，不可轻从。执事者必先视其所挟，
究其所因，定以经络，参合脉理，然后施以某阵某方，庶可差救其弊。中工知头风于目不利，绝不考其所自。粗
工只就目论症，连头风都不识得，甚至有妄乱激成头风者，为之太息。是故本集于风之一字，言外三致意焉。头
风虽另列症内，终乎分辨不清，因不厌琐细，谨编如上，兼志其眩晕、头痛云云。
头风就是首风。医经上说：首风的症状，是头面部多汗，怕风，通常在刮风前一天头痛就会加重，到了刮风那天疼痛会稍微减轻。如果一股风气沿着风府穴向上侵入，就会导致脑痛，这叫做脑风。医经又说：头风的成因，本是风寒之邪侵入脑髓所致。头痛持续数年不愈，通常是遭受了严重寒邪侵袭。如果患者体内素有痰火，风寒外邪客居其中，导致热气郁结而出现视物昏花、胸闷不适，这种似痛非痛的感觉，叫做头晕。如果有眼前发黑、视物模糊且感觉静止的物体在晃动，同时伴有身体转动时耳聋，感觉像站在摇晃的车船上一样，起身想要跌倒，严重时甚至呕吐，饮食难以进用，这是肝木受到风邪摇撼，鼓动肝气，使得痰火随着气机上逆。如果是由于吐血、鼻衄或妇女崩漏失血而导致的，这是脾虚不能统摄血液和气机，使各种血液运行失常。或者是因饮酒和房事过度，导致肾虚不能纳气，气逆奔涌而上；或者是极度虚弱时又感受寒邪而得的，这叫做头眩。如果头部突然剧烈疼痛难以忍受，感觉像被斧劈或被细纹割裂一样，只称为头痛；如果病位深且病程长久，则称为头风。痛风必定伤害眼睛，医经说这是因为春气位于头部，风气与肝脏相通，而肝的开窍在于眼睛的缘故。治疗时必须首先辨别六经（太阳、阳明、少阳、太阴、少阴、厥阴），其次区分厥头痛、偏头痛、真头痛，再次区分血虚、气虚、湿热、寒湿等不同证型。例如太阳头痛，表现为怕风怕冷，脉象浮紧，疼痛部位在头顶和两侧额角；少阳头痛，表现为忽冷忽热，脉象弦，疼痛牵连耳根；阳明头痛，表现为发热自汗，脉象浮大，疼痛在巨阳穴附近，牵连眼睛、牙齿和面颊；太阴头痛，必然有痰，身体沉重或腹痛，脉象沉迟，头部沉重感明显；少阴头痛是由于寒气上逆，属于寒厥，脉象沉小；厥阴头痛，表现为吐痰沫，四肢厥冷，脉象浮缓，疼痛牵引至目系。这六种由六经引起的头痛大多夹杂外邪。血虚头痛，疼痛从眼角鱼尾处向上攻冲，脉象浮而无力；气虚头痛，表现为耳鸣，九窍不通利，脉象沉濡；湿热头痛，表现为心烦怕热，头部沉重，遇到阴天病情加重；寒湿头痛，表现为气机上逆而不能下行，有时腹泻，接触湿热物品后症状稍缓解；偏头痛，是邪气与正气相持不下，势不两立，邪气运行，正气壅遏阻滞而致痛，左侧疼痛主要主风邪或血虚，右侧疼痛主要主气滞或痰热，也有兼有虚寒的情况；厥头痛，是遭受大寒侵袭直达骨髓，骨髓以脑为主宰，脑气上逆所以头痛，脉象沉迟；真头痛，疼痛剧烈连及脑户穴，手足寒冷直到关节，脉象极迟甚至停止，早晨发病晚上死亡，晚上发病早晨死亡。这七种头痛多由内生因素引起。除此之外，如果眉棱骨疼痛剧烈，进而向上攻冲头角、向下注视眼珠的，有的属于心肝蕴热，有的属于风痰上逆，有的属于湿气内郁，有的属于风寒外袭。刚见到光亮眼眶就痛的，这是肝虚。疼痛导致眼睛无法睁开，白天安静晚上加剧的，这是脾胃停聚水饮，土木不和。头痛去而复来，忽然在这一处痛，忽然在那一片痛，这是下虚上实，游风流火（游走的风邪和火热）。朱丹溪说：头痛多由痰引起，严重的由火引起，有的可以用吐法，有的可以用下法。这种观点没有窥探到全貌，不可轻易听从。行医者必须先观察其所夹杂的病邪，探究其病因，确定所属经络，结合脉理，然后施用相应的方剂，才可以挽救弊端。中等水平的医生只知道头风会导致视力不利，绝不考察其根源。粗劣的医生只就眼睛谈论症状，连头风都不认识，甚至有胡乱治疗激惹成头风的，对此令人叹息。因此本集对于“风”这个字，在言外再三致意。头风虽然单独列为一种病症，但终究分辨不清，所以不厌其烦地琐碎编写如上，并记录其眩晕、头痛等情况。
Headwind (Toufeng) is the same as Shoufeng. The Classics state: The manifestation of Shoufeng involves excessive sweating on the head and face, aversion to wind, with headache intensifying one day prior to the wind blowing, and subsiding slightly on the day of the wind. If a pathogenic wind qi ascends along the Fengfu (GV16) acupoint, it causes brain pain, termed Naofeng (Brain Wind). The Classics further state: The etiology of Toufeng lies in Wind-Cold invading the brain marrow. Headache persisting for years without cure indicates severe Cold invasion. If the patient has pre-existing Phlegm-Fire within, and external Wind-Cold pathogens lodge therein, heat becomes stagnant causing visual dimness and chest oppression; this sensation, which feels like pain but is not distinct pain, is called Touyun (Dizziness/Vertigo). If accompanied by blurred vision, darkness, the illusion that stationary objects are moving, deafness upon body rotation, a sensation of standing on a rocking boat or carriage, desire to fall when rising, and even vomiting with poor appetite, this results from Liver Wood being shaken by Wind, stirring its Qi, causing Phlegm-Fire to rebel upward with the Qi. If caused by hematemesis, epistaxis, or uterine bleeding (Benglou), this is due to Spleen deficiency failing to control Blood and Qi, leading to disordered blood flow. Or, if caused by excess alcohol and sexual indulgence, resulting in Kidney deficiency failing to grasp Qi, causing Qi to rush upward; or acquired through extreme deficiency combined with Cold exposure, this is called Toutxuan (Dizziness). If sudden, unbearable head pain occurs, feeling like splitting or fine cutting, it is simply named Tengtong (Headache); if deep-seated and chronic, it is named Toufeng. Gouty pain inevitably affects the eyes because, as the Classics state, Spring Qi resides in the head, Wind Qi connects with the Liver, and the Liver opens into the eyes. Treatment must first differentiate among the Six Channels (Taiyang, Yangming, Shaoyang, Taiyin, Shaoyin, Jueyin), then distinguish between Jue Tengtong (Jue Headache), Pian Tengtong (Hemicrania), and Zhen Tengtong (True Headache), followed by differentiating Blood Deficiency, Qi Deficiency, Damp-Heat, and Cold-Damp patterns. For instance, Taiyang Headache presents with aversion to wind and cold, floating-tight pulse, and pain at the vertex and lateral frontal angles; Shaoyang Headache presents with alternating chills and fever, wiry pulse, and pain radiating to the ear root; Yangming Headache presents with fever and spontaneous sweating, floating-large pulse, and pain at the Juyang area, radiating to the eyes, teeth, and cheeks; Taiyin Headache necessarily involves Phlegm, heavy body or abdominal pain, sinking-slow pulse, and a heavy sensation in the head; Shaoyin Headache is due to rebellious Cold Qi, constituting Cold Jue, with a sinking-small pulse; Jueyin Headache presents with spitting of phlegm foam, cold extremities, floating-slow pulse, and pain radiating to the Eye System (Muxi). These six types of Channel-related headaches mostly involve external pathogens. Blood Deficiency Headache involves pain attacking upward from the outer canthus (Yuwu), with a floating-but-weak pulse; Qi Deficiency Headache presents with tinnitus, dysfunction of the nine orifices, and a sinking-soft pulse; Damp-Heat Headache presents with vexation and aversion to heat, heavy head worsening on cloudy days; Cold-Damp Headache presents with rebellious Qi failing to descend, occasional diarrhea, and slight relief upon contact with damp-heat items; Hemicrania involves a stalemate between Pathogenic and Righteous Qi, where Pathogenic Qi circulates while Righteous Qi is obstructed causing pain; left-sided pain primarily indicates Wind or Blood Deficiency, right-sided pain primarily indicates Qi Stagnation or Phlegm-Heat, though Cold-Deficiency may also be present; Jue Headache results from severe Cold invading to the bone marrow; since Marrow governs the Brain, rebellious Brain Qi causes headache, with a sinking-slow pulse; True Headache involves severe pain connecting to the Naohu (GV17) acupoint, cold extremities reaching the joints, extremely slow or absent pulse, with death occurring from morning to evening or evening to morning. These seven types of headaches mostly arise from internal factors. Furthermore, if pain in the supraorbital ridge is severe, attacking upward to the temporal angle and downward to the eyeballs, it may belong to Heart-Liver Heat accumulation, Wind-Phlegm rebellion, internal Damp stagnation, or external Wind-Cold. Pain in the eye sockets upon exposure to light indicates Liver Deficiency. Pain preventing eye opening, worse at night than during the day, indicates retained fluids in the Spleen-Stomach and disharmony between Wood and Earth. Headache that comes and goes, shifting suddenly from one spot to another, indicates Lower Deficiency and Upper Excess, with wandering Wind and Fire. Zhu Danxi stated: Headache is mostly due to Phlegm, severely due to Fire, treatable by emesis or purgation. This view does not encompass the whole picture and should not be lightly followed. Practitioners must first observe accompanying pathogens, investigate etiology, determine the involved channels, integrate pulse diagnosis, and then apply specific formulas to remedy the condition. Average physicians know only that Toufeng impairs vision but never investigate its origin. Crude physicians discuss symptoms solely regarding the eyes, failing to recognize Toufeng altogether, and some even cause Toufeng through reckless treatment, which is lamentable. Therefore, this collection emphasizes the character "Wind" repeatedly. Although Toufeng is listed separately, distinctions remain unclear; thus, detailed compilation follows, including records of vertigo and headache.