瘟疫发黄，惟阳明与太阴两经有之。黄者，土之正色。二经俱属土，故发黄。盖外不能汗，
内不得小便，脾胃之土为热所蒸，如合曲然，故发外为黄。若小便利，则热不内蓄，故不能变黄。
其有别经发黄者，亦由脾胃之土受邪也，但黄色不一。寒湿之黄，身如薰黄，色暗而不明。热盛
之黄，如橘色、黄柏而明，汗出染衣，此其辨也。而其致黄之由亦不一。有蓄血在下焦发黄者，
有湿热郁积于内发黄者，有因寒湿发黄者，有因下之太过变成阴黄者，有不因下而太阴经中（去声。）
湿之阴黄者。惟瘟疫之黄止湿热、蓄血两条。瘀热发黄，脉浮滑坚数，其症则头汗际颈而还，腹
微满，小便不利而渴者是也。瘀血发黄，脉微而沉或结，其人如狂，小腹急结 满，小便自利，
大便黑者是也。至于发黄而体如薰，直视摇头，鼻出冷气，环口黧黑，
皆不治。
凡伤寒、瘟疫变现诸症，相兼者多，惟斑黄二症少见同时而发者。□□□□□
□□□□□□□□从兄秉钦，病发黄，旋即发斑。余往诊视，甚觉骇异。以其素虚，随用托里举
斑汤、茵陈五苓散，二方中采择加减服之，斑黄并治，冀可奏效。服一剂，次早战汗，后斑黄并退，
其病豁然，随名其方曰斑黄双解散。兹录于下，以备采择，因扩而充之。或斑甚而黄轻者，则以
治斑为重，而以治黄为轻；或黄甚而斑轻者，则以治黄为重，而以治斑为轻。又或有先斑而后黄
者，有先黄而后斑者，有发黄而兼发疹者。斑黄之症不一，巧妙之治各殊。参伍以尽其变，错综以
尽其神，左右逢源，是在业医者因时以制宜耳。
斑黄双解散 （自定新方。）
茵陈 猪苓 茯苓 泽泻（盐水洗，焙） 炒栀 生地 甘草 白芍 当归（酒洗）
瘟疫导致的发黄，只有阳明经和太阴经会出现。黄色是土的正色。这两条经脉都归属于土，所以会出现发黄。这是因为体表不能通过发汗解表，体内又不能通过小便排泄，脾胃的土气被热邪熏蒸，就像制作酒曲一样发酵，所以外表呈现黄色。如果小便通畅，热邪就不会在体内蓄积，因此不会变成黄色。
其他经络出现的发黄，也是由于脾胃的土气受到邪气侵袭所致，但黄色的表现各不相同。寒湿引起的发黄，身体像被烟熏过的黄色，颜色暗淡而不鲜明。热邪炽盛引起的发黄，颜色像橘子皮或黄柏那样明亮，出汗时会染黄衣物，这是两者的区别。而导致发黄的原因也不止一种。有因瘀血蓄积在下焦导致发黄的，有因湿热郁结在内部导致发黄的，有因寒湿导致发黄的，有因过度使用泻下法而转变为阴黄的，也有不因泻下而在太阴经中因湿气导致的阴黄。只有瘟疫导致的发黄仅限于湿热和瘀血这两种情况。
瘀热发黄，脉象浮滑坚数，症状是头部出汗仅到颈部即止，腹部轻微胀满，小便不利且口渴。瘀血发黄，脉象微细而沉或结代，病人神志如狂，小腹拘急硬满，小便自利，大便黑色。至于发黄且身体像被烟熏过，眼睛直视不转，摇头，鼻孔出冷气，口唇周围发黑，这些都是无法治愈的死证。
凡是伤寒、瘟疫显现的各种症状，兼夹并见的很多，只有斑疹和黄痘这两种症状同时出现的情况很少见。我的堂兄秉钦，患病先出现发黄，随即又发出斑疹。我去诊治，感到非常惊异。因为他平时体质虚弱，随即使用了托里举斑汤和茵陈五苓散，在这两个方剂中选取药物加减服用，斑黄同治，希望能见效。服用一剂后，次日早晨发生战汗，随后斑疹和黄痘一并消退，病情豁然开朗，于是我将这个方子命名为“斑黄双解散”。现在记录如下，以备参考选用，并加以扩充完善。如果是斑疹严重而黄痘轻微的，就以治疗斑疹为主，治疗黄痘为辅；如果是黄痘严重而斑疹轻微的，就以治疗黄痘为主，治疗斑疹为辅。又或者有先发斑疹而后发黄，先发黄而后发斑疹，发黄兼发疹子的情况。斑疹和黄痘的症状不一，巧妙的治疗方法也各不相同。综合参详以穷尽其变化，错综复杂以穷尽其神妙，左右逢源，这在于从业医生能够因时制宜罢了。
Jaundice caused by plague (epidemic febrile disease) occurs only in the Yangming and Taiyin meridians. Yellow is the proper color of Earth. Since both these meridians belong to Earth, jaundice manifests. This is because the exterior cannot be resolved through sweating, and the interior cannot be drained through urination; the Earth element of the Spleen and Stomach is steamed by heat, similar to the fermentation process of making qu (starter for brewing), thus manifesting externally as yellow. If urination is smooth, heat does not accumulate internally, so jaundice cannot develop.
Jaundice occurring in other meridians also results from the Earth element of the Spleen and Stomach being affected by pathogens, but the shades of yellow vary. Jaundice due to cold-dampness presents with a body color like that of cured tobacco, dark and dull. Jaundice due to excessive heat presents with a bright color like orange peel or Phellodendri Cortex (Huangbai), staining clothes upon sweating; this distinguishes them. The causes of jaundice are diverse. There is jaundice caused by blood stasis accumulating in the Lower Jiao; jaundice caused by damp-heat stagnating internally; jaundice caused by cold-dampness; jaundice transformed into Yin Jaundice due to excessive purgation; and Yin Jaundice caused by dampness within the Taiyin Meridian without prior purgation. However, jaundice specifically caused by plague is limited to only two categories: damp-heat and blood stasis.
For jaundice due to stasis-heat, the pulse is floating, slippery, firm, and rapid; symptoms include sweating only on the head up to the neck, slight abdominal fullness, difficult urination, and thirst. For jaundice due to blood stasis, the pulse is faint, deep, or knotted; the patient exhibits manic behavior, tightness and hardness in the lower abdomen, free urination, and black stools. As for jaundice accompanied by a body color like cured tobacco, fixed staring gaze, shaking of the head, cold air issuing from the nose, and blackening around the mouth, these are all untreatable conditions.
In various manifestations of Shanghan (Cold Damage) and plague, concurrent symptoms are common, but it is rare for macules (ban) and jaundice (huang) to appear simultaneously. My cousin, Bingqin, suffered from jaundice which was quickly followed by the eruption of macules. I examined him and found the situation quite startling. Given his constitution was inherently deficient, I prescribed Tuo Li Ju Ban Tang (Support Interior Macule-Elevating Decoction) and Yinchen Wuling San (Artemisiae Scopariae Five-Ingredient Powder with Poria), selecting and modifying ingredients from both formulas to treat both macules and jaundice concurrently, hoping for efficacy. After one dose, he experienced chills and sweating the next morning, after which both macules and jaundice receded, and his condition cleared abruptly. Thus, I named this formula Ban Huang Shuang Jie San (Double-Resolving Macule and Jaundice Powder). It is recorded below for reference and has been expanded. If macules are severe and jaundice mild, treatment should focus primarily on macules and secondarily on jaundice; if jaundice is severe and macules mild, treatment should focus primarily on jaundice and secondarily on macules. Furthermore, there are cases where macules appear first followed by jaundice, jaundice appears first followed by macules, or jaundice occurs with rashes. The presentations of macules and jaundice vary, and their ingenious treatments differ accordingly. Synthesizing and analyzing to exhaust their variations, and navigating complexities to master their subtleties, allowing for flexible application, depends on the practitioner's ability to adapt to the circumstances.
Ban Huang Shuang Jie San (Self-formulated New Formula.)
Yinchen (Artemisiae Scopariae Herba), Zhuling (Polyporus), Fuling (Poria), Zexie (Alismatis Rhizoma - washed in salt water, dried), Chao Zhi (Stir-fried Gardeniae Fructus), Shengdi (Rehmanniae Radix), Gancao (Glycyrrhizae Radix et Rhizoma), Baishao (Paeoniae Radix Alba), Danggui (Angelicae Sinensis Radix - washed in wine).