妇人有带下而色黄者，宛如黄茶浓汁，其气腥秽，所谓黄带是也。夫黄带乃任脉之湿热也。任脉本不能容水，
湿气安得再入而化为黄带乎？不知带脉横生，通于任脉，任脉直上走于唇齿，唇齿之间，原有不断之泉下贯于任脉
以化精，使任脉无热气之绕，则口中之津液尽化为精，以入于肾矣。惟有热邪存于下焦之间，则津液不能化精，而
反化湿也。夫湿者，土之气，实水之侵；热者，火之气，实木之生。水色本黑，火色本红，今湿与热合，欲化红而
不能，欲返黑而不得，煎熬成汁，因变为黄色矣。此乃不从水火之化，而从湿化也。所以世之人有以黄带为脾之湿
热，单去治脾而不得痊者，是不知真水、真火合成丹邪、元邪，绕于任脉、胞胎之间，而化此黔色也，单治脾何能
痊乎！法宜补任脉之虚，而清肾火之炎，则庶几矣。
方用易黄汤。
山药（一两，炒） 芡实（一两、炒） 黄柏（二钱，盐水炒） 车前子（一钱，酒炒） 白果（十枚，碎）
水煎。连服四剂，无不痊愈。此不特治黄带方也，凡有带病者，均可治之，而治带之黄者，功更奇也。盖山药、
芡实专补任脉之虚，又能利水，加白果引入任脉之中，更为便捷，所以奏功之速也。至于用黄柏清肾中之火也，肾
与任脉相通以相济，解肾中之火，即解任脉之热矣。
眉批∶凡带症多系脾湿。初病无热但补脾土兼理冲任之气其病自愈，若湿久生热必得清肾火而湿始有去路。
方用黄柏、车前子妙！
山药、芡实尤能清热生津。
丹邪元邪四字未晰拟，易以真水真火为湿热之气所侵，绕于任脉云云，较无语病，然原书究不可轻改，姑仍之。
歌括∶妇人带下色发黄，任脉湿热邪气伤。
补任之虚清肾火，临证当服易黄汤。
易黄汤中用白果，山药芡实盐黄柏。
酒炒车前能利水，补任之虚清肾火。
Women may suffer from leukorrhea that is yellow in color, resembling strong tea liquor, with a fishy and foul odor; this is referred to as "Yellow Leukorrhea" (Huang Dai). Yellow Leukorrhea is caused by damp-heat in the Ren Mai (Conception Vessel). The Ren Mai normally cannot accommodate water-dampness; how can dampness enter and transform into yellow leukorrhea? It is unknown that the Dai Mai (Girdle Vessel) grows horizontally and connects with the Ren Mai. The Ren Mai ascends vertically to the lips and teeth. Between the lips and teeth, there is a continuous flow of saliva descending through the Ren Mai to transform into essence. If the Ren Mai were not surrounded by heat qi, the saliva in the mouth would entirely transform into essence and enter the Kidneys. However, when pathogenic heat remains between the Lower Jiao (Lower Burner), the body fluids cannot transform into essence but instead transform into dampness. Dampness is the qi of Earth, actually representing the invasion of Water; Heat is the qi of Fire, actually arising from Wood. The natural color of Water is black, and the natural color of Fire is red. Now, when dampness combines with heat, it desires to transform into red but cannot, and desires to return to black but fails. After being boiled down into juice, it consequently turns yellow. This transformation follows dampness rather than the normal transformations of Water and Fire. Therefore, some people mistakenly attribute yellow leukorrhea to damp-heat in the Spleen. Treating only the Spleen without success occurs because they do not realize that True Water and True Fire combine to form Dan Xie (Dan Pathogen) and Yuan Xie (Yuan Pathogen), which surround the Ren Mai and Bao Tuo (Uterus/Ovaries), thereby transforming into this dark-yellow hue. How can treating only the Spleen lead to a cure? The treatment method should tonify the deficiency of the Ren Mai and clear the flaming fire of the Kidneys, which will likely result in recovery.
The formula used is Yi Huang Tang (Change Yellow Decoction).
Shan Yao (Dioscoreae Rhizoma, 1 liang, stir-fried) Qian Shi (Euryales Semen, 1 liang, stir-fried) Huang Bo (Phellodendri Cortex, 2 qian, stir-fried with salt water) Che Qian Zi (Plantaginis Semen, 1 qian, stir-fried with wine) Bai Guo (Ginkgonis Semen, 10 pieces, crushed)
Decoct in water and take orally. Continuous administration for four doses ensures recovery in all cases. This is not merely a formula for treating yellow leukorrhea; it can treat any leukorrhea disorder, but its efficacy is particularly remarkable for yellow leukorrhea. This is because Shan Yao and Qian Shi specifically tonify the deficiency of the Ren Mai and promote diuresis. Adding Bai Guo facilitates entry into the Ren Mai, making the action more efficient and thus leading to rapid results. Regarding the use of Huang Bo to clear the fire in the Kidneys: since the Kidneys communicate with and assist the Ren Mai, resolving the fire in the Kidneys resolves the heat in the Ren Mai.
Marginal Note: Most leukorrhea syndromes are due to Spleen dampness. In early stages without heat, tonifying the Spleen Earth and regulating the Qi of the Chong Mai (Penetrating Vessel) and Ren Mai will allow the disease to heal spontaneously. If dampness persists and generates heat, clearing Kidney fire is necessary to provide an exit route for the dampness. The use of Huang Bo and Che Qian Zi in the formula is ingenious!
Shan Yao and Qian Shi are especially effective in clearing heat and generating fluids.
The terms "Dan Xie" and "Yuan Xie" are unclear. It is proposed to replace them with "True Water and True Fire invaded by damp-heat qi, surrounding the Ren Mai," which eliminates grammatical errors. However, the original text should not be lightly altered, so we retain it tentatively.
Verse:
Women's leukorrhea turns yellow,
Ren Mai damaged by damp-heat pathogen.
Tonify Ren deficiency, clear Kidney fire,
Clinically administer Yi Huang Tang.
Yi Huang Tang contains Bai Guo,
Shan Yao, Qian Shi, and salt-fried Huang Bo.
Wine-fried Che Qian Zi promotes diuresis,
Tonifies Ren deficiency, clears Kidney fire.