右边气胜左边风，风气兼并作火冲，可论一边皆险急，那堪左右两相攻。攻外青睛凹或凸，内攻神散照无瞳。
识得六经七种病，按方主治不无功。
此症左边头痛，右不痛者，曰左偏风；右边头痛，左不痛者，曰右偏风。丹溪曰∶头风有痰、有热、有风、
有血。在左多属风血，在右多属痰热。世人只苦头痛，全不虑及眼目，往往左发损左目，右发损右目。若血虚生
风，风盛生热，热生痰，痰逆气，风与痰并，血从中耗，耗虚则寒而痛。风不衰，必损左反攻右，损右反攻左，
而两目俱损。更验痛由内起止于外，为祸迟；痛由外起止于内，为祸速；由百会、上星、攒竹中入者，为祸烈。
外有赤肿痛泪，得外症；内有昏惑妄见，得内症，症成多不能治。风之害人，惨毒极矣！治法∶不问左右，先以
艾葱熨头，炒米、炒盐熨太阳穴，一面调神应散，徐徐啜之，俟势稍止，然后按症诊脉。如左偏风，脉浮数有力，
心烦口苦，目红狂痛，泪热如汤，二便不利，逐客饮、导赤各半汤，有翳兼服泻青丸；右偏风，脉如左，加大实，
目赤肿，眵多，二便秘涩，通气利中丸、凉膈散、清胃散，有痰，清气化痰丸用亦得。根据此主持，厥目未必就损。
不损，再对病选方，十亦可全五六。
五月阴气进，风邪任脉伏；子月阳气进，风邪伏在督。伏任眉骨疼，伏督痛枕骨，督任递相传，满头若击触。
此症指额扳骨、眉棱骨与后顶枕骨痛楚而言。阴邪发，则多于六阳用事之月。盖真阴不足，风热上炎，若胸
有宿痰，此火之所致，热甚生风也。阳邪发，则多于六阴用事之月。盖真阳不足，寒湿内攻，若耳鸣眩晕，此逆
痰所致，火兼水化也。曰督任者，即人身前后之分，非女抱阳负阴、男抱阴负阳，支离无据，奇经八脉之督任也。
症无内外，总以益营扶卫，降火散痰，俾寒者温之，湿者燥之，热者凉之，邪痛如揭。元虚、痰火及怒气甚者多
得此，忽而不治，治而或愈，愈而复作者，势必至丧明而后已。
右边气盛而左边风盛，风与气相兼化火冲逆，可判断为一侧病情险急，更何况左右两侧相互攻伐。邪气向外侵袭，导致黑睛（角膜）凹陷或凸起；向内攻冲，导致神光散乱、瞳孔无光。
这种病症中，左边头痛而右边不痛的，称为左偏风；右边头痛而左边不痛的，称为右偏风。朱丹溪说：头风病因有痰、有热、有风、有血所致。在左侧多属于风血为患，在右侧多属于痰热为患。世人只苦恼于头痛，完全不顾及眼睛，往往左侧发作损伤左眼，右侧发作损伤右眼。如果血虚生风，风盛生热，热盛生痰，痰逆阻碍气机，风与痰并结，血液从中耗损，耗损过度则因虚寒而疼痛。风邪不衰，必然先损伤左侧再反攻右侧，或先损伤右侧再反攻左侧，最终双眼俱损。更需验证疼痛是由内起至外止的，祸患较缓；由外起至内止的，祸患迅速；从百会穴、上星穴、攒竹穴进入体内的，祸患猛烈。外部出现红、肿、痛、流泪症状的，为外症；内部出现昏沉迷惑、妄见幻象的，为内症，症候形成后大多难以治愈。风邪害人，惨毒至极！治疗方法：不分左右，先用艾草和葱白熨烫头部，用炒米、炒盐熨烫太阳穴，同时服用神应散，慢慢饮用，等待病势稍止，然后辨证诊脉。如果是左偏风，脉象浮数有力，心烦口苦，眼睛红肿狂痛，热泪如汤，大小便不利，使用逐客饮、导赤各半汤，如果有翳膜，兼服泻青丸；如果是右偏风，脉象同左但更加实大，眼睛红肿，眼屎多，大小便秘涩，使用通气利中丸、凉膈散、清胃散，如果有痰，使用清气化痰丸也可以。根据此法主持治疗，厥阴目未必就会受损。如果不受损，再针对病证选方，十次治疗也可痊愈五六次。
五月阴气进，风邪潜伏于任脉；子月阳气进，风邪潜伏于督脉。潜伏于任脉则眉骨疼痛，潜伏于督脉则枕骨疼痛，督脉与任脉交替相传，整个头部如同被击打触碰一般疼痛。
此症是指额头、颞部（鬓角）、眉棱骨以及后顶枕骨疼痛而言。阴邪发作，多见于六阳主事之月。因为真阴不足，风热上炎，如果胸中有宿痰，这是火热所致，热甚而生风。阳邪发作，多见于六阴主事之月。因为真阳不足，寒湿内攻，如果出现耳鸣眩晕，这是逆痰所致，火兼水化。所谓督任，即人身前后之分野，并非女子抱阳负阴、男子抱阴负阳那种支离无据的说法，而是奇经八脉中的督脉和任脉。病症没有内外之分，总以益营扶卫、降火散痰为主，使寒者温之，湿者燥之，热者凉之，邪痛如揭去覆盖物般消除。元气虚弱、痰火及怒气严重者多得此病，忽视而不治，或者治疗虽愈但复发，势必发展到失明才停止。
The right side is dominated by Qi, the left by Wind; when Wind and Qi combine, they transform into Fire and rush upward. It can be diagnosed as a dangerous and urgent condition on one side, let alone when both left and right sides attack each other. When attacking outward, the Qingjing (cornea) may become concave or convex; when attacking inward, the Shen (spirit/vision) scatters and the pupil loses its luster.
If one can recognize the diseases of the Six Channels and the seven types of head wind, treating according to the formula will not be without merit.
In this syndrome, if the left side of the head hurts but the right does not, it is called Left Biased Wind; if the right side hurts but the left does not, it is called Right Biased Wind. Danxi said: Head wind is caused by Phlegm, Heat, Wind, and Blood. On the left, it mostly belongs to Wind and Blood; on the right, it mostly belongs to Phlegm and Heat. People only suffer from headaches and completely neglect their eyes. Often, an attack on the left damages the left eye, and an attack on the right damages the right eye. If Blood deficiency generates Wind, excessive Wind generates Heat, excessive Heat generates Phlegm, and Phlegm reverses to obstruct Qi, with Wind and Phlegm combining, Blood is consumed from within. Consumption leads to deficiency, Cold, and pain. If Wind does not subside, it must damage the left first and then counter-attack the right, or damage the right first and then counter-attack the left, resulting in damage to both eyes. Furthermore, verify that pain starting internally and ending externally causes slower harm; pain starting externally and ending internally causes rapid harm; pain entering from Baihui (GV20), Shangxing (GV23), or Cuanzhu (BL2) causes severe harm. Externally presenting with redness, swelling, pain, and tearing indicates an External Syndrome; internally presenting with dizziness, confusion, and visual hallucinations indicates an Internal Syndrome. Once formed, these syndromes are often incurable. The harm caused by Wind is extremely cruel and toxic! Treatment method: Regardless of left or right, first use moxa and green onion to warm the head, and stir-fried rice and salt to warm the Taiyang acupoints. Simultaneously, prepare Shenying San (Divine Response Powder) and sip it slowly. Wait until the condition subsides slightly, then diagnose the pulse according to the syndrome. For Left Biased Wind, if the pulse is floating, rapid, and forceful, accompanied by vexation, bitter taste, red and wildly painful eyes, hot tears like soup, and difficulty in urination and defecation, use Zhuke Yin (Guest-Expelling Decoction) and Daochi Ban Ge Tang (Half-and-Half Decoction for Guiding Out Redness). If there is nebula, take Xieqing Wan (Liver-Clearing Pill) concurrently. For Right Biased Wind, if the pulse is similar to the left but more full and large, with red and swollen eyes, excessive discharge, and constipation in urination and defecation, use Tongqi Lizhong Wan (Qi-Unblocking Middle-Promoting Pill), Liangge San (Cooling Diaphragm Powder), or Qingwei San (Stomach-Clearing Powder). If there is Phlegm, Qingqi Huatan Wan (Qi-Clearing Phlegm-Transforming Pill) is also acceptable. Following this principle, Jueyin Eye damage may be avoided. If not damaged, selecting formulas based on the disease can cure five or six out of ten cases.
In the fifth month, Yin Qi advances, and Wind Evil hides in the Ren Mai (Conception Vessel); in the Zi month, Yang Qi advances, and Wind Evil hides in the Du Mai (Governor Vessel). Hiding in Ren Mai causes eyebrow bone pain; hiding in Du Mai causes occipital bone pain. As Du and Ren alternate transmission, the whole head feels as if struck or touched.
This syndrome refers to pain in the forehead, temples, eyebrow ridge, and posterior vertex/occipital bone. When Yin Evil manifests, it occurs more often during months governed by the Six Yang channels. This is because True Yin is insufficient, allowing Wind-Heat to flare upward. If there is old Phlegm in the chest, this is caused by Fire, where excessive Heat generates Wind. When Yang Evil manifests, it occurs more often during months governed by the Six Yin channels. This is because True Yang is insufficient, allowing Cold-Dampness to attack internally. If tinnitus and vertigo occur, this is caused by rebellious Phlegm, where Fire combines with Water transformation. "Du and Ren" refer to the front and back divisions of the human body, not the baseless theory of women embracing Yang and bearing Yin, or men embracing Yin and bearing Yang; rather, it refers to the Du Mai and Ren Mai among the Eight Extraordinary Vessels. There is no distinction between internal and external in this syndrome; the general approach is to nourish Ying (Nutritive Qi) and support Wei (Defensive Qi), descend Fire, and dissipate Phlegm, so that Cold is warmed, Dampness is dried, and Heat is cooled, eliminating pain as easily as removing a cover. Those with Yuan (Primordial) deficiency, Phlegm-Fire, or severe anger are prone to this. Ignoring it without treatment, or having it recur after temporary cure, will inevitably lead to blindness.