皆血太过与不及也。太过者，血得太热而溢于上，则目壅塞而发痛；不及
者，血虚无所养而拈目痛。目之锐 ，少阳经也，血少气多；目之上纲，太
阳经也，血多气少；目之下纲，阳明经也，血气俱多。惟足厥阴连于目系而已。
治法 血实者决之；血虚者补之。佐以辛散之，以凉清之、汗之、吐之。
因风热乘虚而入于脑，宜以辛凉散之、行之；头目昏眩疼痛及脑痛，宜以辛凉散之、行之。
羌活汤 治风热壅盛，上攻头目，昏眩疼痛及脑痛。
羌活 防风 黄芩（酒） 黄连（一两酒） 柴胡（七钱） 栝蒌根（酒） 茯苓（一钱） 甘草
羌附汤 治冬天寒气犯脑痛，齿亦痛，名曰脑风。
麻黄 附子 防风 羌活 白芷 升麻 姜蚕 黄柏 甘草（三钱） 苍术 黄 （一钱）
藿香散 治脑风头痛。
藿香 川芎 天麻 蔓荆子 白芷
上槐花酒汤下。
又 谷精草 铜绿（另研各三钱） 硝石（另研一钱） 为末，吹鼻中。
又 细辛 瓜蒂 良姜（一钱） 硝（五钱） 含水满口，以药搐鼻。
又 荆芥 薄荷 木贼 姜蚕 蝎梢
上为末，茶清下二钱。
These conditions are caused by either an excess or a deficiency of Blood. When in excess, Blood becomes too hot and overflows upward, causing congestion in the eyes and resulting in pain; when deficient, the lack of Blood fails to nourish the eyes, leading to pain. The outer canthus of the eye belongs to the Shaoyang (Lesser Yang) channel, where there is little Blood and much Qi; the upper eyelid belongs to the Taiyang (Greater Yang) channel, where there is much Blood and little Qi; the lower eyelid belongs to the Yangming (Yang Brightness) channel, where both Blood and Qi are abundant. Only the Foot-Jueyin Liver Channel connects directly to the eye system.
Treatment principles: For Blood excess, use methods to drain or puncture (Jue); for Blood deficiency, use tonification. Assist with acrid herbs to disperse, cool herbs to clear heat, sweating methods, or emetic methods.
When Wind-Heat enters the brain due to deficiency, it should be treated with acrid-cool herbs to disperse and promote circulation. For dizziness, visual blurring, headache, and cephalalgia involving the brain, acrid-cool herbs should also be used to disperse and promote circulation.
Qianghuo Tang (Notopterygium Decoction): Treats excessive accumulation of Wind-Heat attacking the head and eyes, causing dizziness, visual blurring, headache, and cephalalgia involving the brain.
Ingredients: Qianghuo (Rhizoma et Radix Notopterygii), Fangfeng (Radix Saposhnikoviae), Huangqin (Radix Scutellariae, wine-processed), Huanglian (Rhizoma Coptidis, one tael, wine-soaked), Chaihu (Radix Bupleuri, seven qian), Gualougen (Radix Trichosanthis, wine-processed), Fuling (Poria), Gancao (Radix Glycyrrhizae).
Qiangfu Tang (Notopterygium and Aconite Decoction): Treats cephalalgia involving the brain caused by Cold-qi invading the brain in winter, accompanied by toothache; this condition is called Naofeng (Brain Wind).
Ingredients: Mahuang (Herba Ephedrae), Fuzi (Lateral Root of Aconitum Carmerichaelii Preparata), Fangfeng (Radix Saposhnikoviae), Qianghuo (Rhizoma et Radix Notopterygii), Baizhi (Radix Angelicae Dahuricae), Shengma (Rhizoma Cimicifugae), Jiangcan (Bombyx Batryticatus), Huangbai (Cortex Phellodendri), Gancao (Radix Glycyrrhizae, three qian), Cangzhu (Rhizoma Atractylodis Lanceae), Huangqi (Radix Astragali, one qian).
Huoxiang San (Agastache Powder): Treats Naofeng (Brain Wind) headache.
Ingredients: Huoxiang (Patchouli Herba), Chuanxiong (Rhizoma Chuanxiong), Tianma (Gastrodiae Rhizoma), Manjingzi (Fructus Viticis), Baizhi (Radix Angelicae Dahuricae).
Administration: Take with Shanghuaihua Jiu Tang (Sophora Flower Wine Decoction).
Another prescription: Gujingcao (Flos Sparganii), Tonglv (Chalcostigma, separately ground, each three qian), Xiaoshi (Natrii Nitras, separately ground, one qian), ground into powder, insufflated into the nose.
Another prescription: Xixin (Radix Asari), Gouti (Fructus Momordicae), Liangjiang (Rhizoma Galangae, one qian), Xiao (Sal Nitratis, five qian). Hold water full in the mouth, then insufflate the medicine into the nose.
Another prescription: Jingjie (Herba Schizonepetae), Bohe (Herba Menthae), Muzei (Equiseti Herba), Jiangcan (Bombyx Batryticatus), Xieshao (Cauda Scorpio).
Administration: Ground into powder, taken with Chaqing (Tea infusion), two qian per dose.
Due to Wind-Phlegm:
Ingredients: Qianghuo (Rhizoma et Radix Notopterygii), Fangfeng (Radix Saposhnikoviae), Gancao (Radix Glycyrrhizae), Huangqin (Radix Scutellariae, wine-processed), Baizhu (Rhizoma Atractylodis Macrocephalae), Banxia (Rhizoma Pinelliae Preparatum), Nanxing (Rhizoma Arisaematis Cum Bile), Xixin (Radix Asari).
Another formula: Add Chuanwu (Radix Aconiti Preparata) and Wutou (Radix Aconiti Lateralis Preparata, soaked in child's urine and stir-fried to remove toxicity) as the sovereign herbs.