脑者，髓之海也。髓不足则脑为之痛，宜茸珠丹之类治之。若用风药，久之必死。脑
为元神之府，稍受微邪，即现不支之态。《内经》谓之真头痛，旦发夕死，虽进茸珠
丹，恐亦无济于事矣。
牙疼以平胃散入梅花片脑少许，研匀擦之立效。(有胃热肾虚之因，分辨明晰，庶免遗
误。平胃加片脑，仅散湿热而已。)
《难经》云∶阴维为病苦心痛。阴维行诸阴而主荣，荣为血，血属心，故苦心痛也。洁
古云∶其治在足少阳二阴交。仲景太阴证则理中汤，少阴证则四逆汤，厥阴证则当归
四逆吴茱萸汤。
阴维为病苦心痛，若手足厥逆，危候也。
目赤肿痛，人知降火而不知活血，所以不得力，只用四物汤，内地黄用生，芍药用赤，
加酒蒸大
黄，赤茯苓、薄荷叶治之甚妙，此戴复庵法。又云∶早晨盐汤下养正丹二三十粒。又云∶若
眼赤
久而不愈，用诸眼药不效，早用苏子降气汤下黑铅丹，临卧则以消风散下三黄丸，日中则以
酒调黑神散，此数药不独治久赤眼，诸眼皆治之。
降火必兼活血，发前人所未发。若不活血，寒仍凝涩，火何由而降。气血流通，火亦随
之而降矣。
经云∶膀胱移热于小肠，膈肠不便，上为口糜，宜以清凉之剂利小便，用五苓、导赤散
，却合
服之神效。又云∶少阳之火气内发热，上为口糜。则又当用苦寒之剂也。
如二法不效，则宜炮姜之类反佐之。
脑，是髓汇聚的海。髓海不足，就会引起脑部疼痛，适宜用茸珠丹等方剂治疗。如果误用风药（祛风药），时间久了必然导致死亡。脑是元神居住的地方，稍微受到轻微邪气侵袭，就会表现出支撑不住的状态。《内经》称之为真头痛，早晨发病晚上就会死亡，即使服用茸珠丹，恐怕也无济于事。
牙疼可以用平胃散加入少许梅花片脑（冰片），研磨均匀后擦拭，立刻见效。（这里区分了胃热和肾虚两种病因，分辨得清晰明确，才能避免遗漏或错误。平胃散中加入片脑，只能疏散湿热罢了。）
《难经》说：阴维脉生病会使人痛苦于心痛。阴维脉运行于诸阴经并主管营气，营气属于血，血归属于心，所以会感到心痛。洁古（张元素）说：治疗部位在足少阳胆经与足厥阴肝经的交会处。张仲景认为太阴证用理中汤，少阴证用四逆汤，厥阴证用当归四逆吴茱萸汤。
阴维脉生病使人痛苦于心痛，如果伴有手足冰冷逆冷，这是危重的征候。
眼睛红肿疼痛，人们只知道降火却不知道活血，所以效果不佳。只用四物汤，其中地黄用生地黄，芍药用赤芍，加上酒蒸的大黄、赤茯苓、薄荷叶来治疗非常巧妙，这是戴复庵的方法。又说：早晨用盐汤送服养正丹二三十粒。又说：如果眼红久了不愈，使用各种眼药无效，早上用苏子降气汤送服黑铅丹，临睡前用消风散送服三黄丸，中午时用酒调服黑神散，这几味药不仅治疗久治不愈的眼红，各种眼病都能治疗。
降火必须兼用活血，这是前人未曾阐发的见解。如果不活血，寒气仍然凝滞涩结，火气从哪里得以降下呢？气血流通，火气也随之而降了。
经文说：膀胱将热邪转移给小肠，导致肠道传导不利，热气上熏形成口糜（口腔黏膜溃烂），适宜用清凉的药剂通利小便，使用五苓散、导赤散，同时配合服用，效果神奇。又说：少阳经的火气内盛发热，上熏形成口糜。这时又应当使用苦寒的药剂。
如果这两种方法都不见效，则适宜用炮姜之类的药物进行反佐治疗。
The brain is the sea of marrow. When the sea of marrow is insufficient, it causes pain in the brain; it is appropriate to treat it with formulas such as Rongzhu Dan (Deer Antler and Pearl Pill). If wind-dispelling herbs are used, death will inevitably occur after a long time. The brain is the mansion of the primordial spirit (Yuan Shen). Even slightly affected by minor pathogenic factors, it immediately shows signs of inability to sustain itself. The *Neijing* calls this "True Headache" (Zhen Tou Tong), where onset in the morning leads to death by evening; even if Rongzhu Dan is administered, it is likely to be of no avail.
For toothache, Pingwei San (Pingwei Powder) mixed with a small amount of Meihua Pian Nao (Borneol) can be ground evenly and applied topically for immediate effect. (This distinguishes clearly between the causes of Stomach Heat and Kidney Deficiency, thereby avoiding omissions or errors. Adding Borneol to Pingwei San only disperses Damp-Heat.)
The *Nan Jing* states: "When the Yin Linking Vessel (Yin Wei Mai) is diseased, one suffers from heart pain." The Yin Linking Vessel runs through all Yin meridians and governs Ying (Nutritive) Qi. Ying Qi belongs to Blood, and Blood is associated with the Heart; therefore, one suffers from heart pain. Jiegu (Zhang Yuansu) stated: "The treatment lies at the intersection of the Foot-Shaoyang Gallbladder and Foot-Jueyin Liver meridians." Zhang Zhongjing taught that for Taiyin Syndrome, Lizhong Tang (Regulate the Middle Decoction) is used; for Shaoyin Syndrome, Sini Tang (Frigid Extremities Decoction) is used; for Jueyin Syndrome, Danggui Sini Wuzhuyu Tang (Angelica Sinensis Decoction plus Evodia) is used.
When the Yin Linking Vessel is diseased causing heart pain, if accompanied by cold extremities (Jue Ni), it is a critical condition.
For redness and swelling pain of the eyes, people know how to clear Fire but do not know how to invigorate Blood, so the effect is inadequate. Using only Siwu Tang (Four Substances Decoction), with raw Dihuang (Rehmanniae Radix), Chishao (Red Peony Root), added with Jiuzheng Dahuang (Rhubarb steamed with wine), Chi Fuling (Poria with Red Mycelium), and Bohe Ye (Mint Leaf) treats it very effectively; this is the method of Dai Fu'an. It is also said: Take Yangzheng Dan (Yangzheng Pill) 20-30 pills with salt water in the morning. It is also said: If eye redness persists without healing and various eye medicines are ineffective, use Suzi Jiangqi Tang (Perilla Seed Descending Qi Decoction) to administer Heiqian Dan (Black Lead Pill) in the morning; before sleep, use Xiaofeng San (Extinguish Wind Powder) to administer Sanhuang Wan (Three Huangs Pill); at noon, use wine to mix and administer Heishen San (Heishen Powder). These medicines not only treat chronic eye redness but also various eye diseases.
Clearing Fire must be combined with invigorating Blood; this is an insight not previously expounded. Without invigorating Blood, Cold remains stagnant and obstructed, from where can Fire descend? When Qi and Blood flow freely, Fire descends along with them.
The classics state: "Bladder transfers heat to the Small Intestine, causing obstruction in bowel movements, and heat rises to cause mouth ulcers (Kou Mi)." It is appropriate to use cooling agents to promote urination, using Wuling San (Wuling Powder) and Daochi San (Guide Out Redness Powder), taken concurrently for miraculous effects. It is also said: "Shaoyang Fire Qi internally generates heat and rises to cause mouth ulcers." In this case, bitter-cold agents should be used.
If neither of these two methods is effective, then Paojiang (Prepared Ginger) or similar substances should be used for counter-assistance (Fan Zuo).