胡 时毒误药成淋，咳嗽声哑，脉细模糊，思面色苍赤，体质属火，时毒谬用补托，溺道不清，淋久肾虚
火炎金燥，致呛嗽失音，遂成重症。今夏初巳火主令，嗜寐健忘恍惚，心神溃散。焉能摄肾。速用滋阴泻火，
冀秋深气肃，得金水相涵，火毒平，音渐复。元参、生地、麦冬、贝母、丹皮、龟甲、茯神、远志、土茯苓、
淡竹叶，井华水煎。二十服淋愈音响。加熟地、阿胶、甜杏仁、枣仁。蜜丸服，症平。
（大头瘟 捻颈瘟 瓜瓤瘟 杨梅瘟 疙瘩瘟 绞肠瘟 软脚瘟附）
疫为时行疠气，有大疫，有常疫，大疫沿门阖境，多发于兵荒之后，不数见。常疫则一隅数家，一家数人。
症多相似，春夏秋三时皆有之，而夏秋为甚。其疠邪之来，皆从湿土郁蒸而发，触之成病，其后更相传染，必
由口鼻吸受，流入募原。募原乃阳明胃络，在夹脊前肠胃后，去表不远，附近于胃，为表里之分界。从鼻吸入，
故头额晕胀，背微恶寒。从口吸入，故呕恶满闷，脐痛下利，足膝逆冷，邪出募原，故壮热。有汗不解，必俟
表气入内，精气达外，大发战汗，然后脉静身凉，亦有自汗而解者，但以出表为顺，陷里为逆。从表解者，战
汗自汗发斑；从里陷者，胸腹痞痛，便秘，热结旁流，协热下利，呕恶谵语，舌黄黑刺。疫证脉不沉不浮而数，
然必右盛于左，以湿土之邪，多犯阳明胃经也。募原亦附胃。阳明居太阳之里，少阳之外，为三阳经之中道。
伤寒之邪，自表传里，温热之邪，自里达表。疫疠之邪，自阳明中道，随表里虚实而发，不循经传也。邪伏
中道，必表里分解，然不能一发便尽。故有得汗热除，二三日复热如前者∶有得下里和，二三日复见表症者；
有表和复见里症者；有表里偏胜者；有表里分传者，吴氏《温疫论》谓疫有九传，综其变也。总由伏
邪既溃，传变不一，故屡夺屡发也。疫症治法，外解如香豉、葱白、连翘、薄荷之属，内清如山栀、芩、连、
人中黄、滑石之属，下夺如芒硝、大黄之属。且疫为秽浊之邪，若熏蒸热痰，蒙蔽心包，则神识渐昏，必用芳香
宣逐，清血络以防结闭。如犀角、菖蒲、银花、郁金、佩兰之属。烦渴多汗，用石膏、知母。斑发咽痛，用犀
角、牛蒡、生地。衄血下血，用山栀、犀角、丹皮。发热自利，用葛根、芩、连。胸膈痞满，用栝蒌、枳、桔。
呕吐呃逆，用藿香、竹茹。邪混三焦，热结血分，宜大制咸苦，用元参、金银花露、金汁之属。而人中黄、
香豉尤为时疫之专药，香豉、黑豆所 ，得湿热之气，酿成败秽之质，能引内邪从巨阳蒸汗而解。人中黄、甘
草所制，渍以滓秽，专解肠腑恶毒，从下而泄，得同气相求之妙，以其总解温热时内联外热毒也。盖疫为燥热
毒疠，从无辛温发散之例，一切风燥辛热，皆不可犯。至于大疫，又宜斟酌司天岁气方向，不拘一辙也。其
发于外者，有大头、捻颈、瓜瓤、杨梅、疙瘩、绞肠、软脚等症，亦条列治法，备查用焉。此症宜与温热同参。
Patient Hu suffered from *Shi Du* (Seasonal Toxic Heat) and, due to misprescribed medication, developed strangury (dysuria with pain), cough, and hoarseness. The pulse was fine and indistinct. His complexion was dark and ruddy, indicating a constitution prone to Fire. The seasonal toxin was erroneously treated with tonifying and expelling methods, leading to unclear urinary flow. Prolonged strangury depleted Kidney essence; Rising Fire scorched Lung Metal, causing dryness, paroxysmal cough, and aphonia, resulting in a severe condition.
In early summer, when Si Fire governs the climate, he experienced lethargy, forgetfulness, and mental confusion, indicating scattered Heart Spirit unable to secure the Kidneys. Immediate treatment should employ nourishing Yin and purging Fire, hoping that by late autumn, when Qi becomes crisp, Metal and Water will mutually generate and nourish each other, extinguishing Fire toxins and gradually restoring voice. Prescription: *Xuanshen* (Scrophulariae Radix), *Shengdi Huang* (Rehmanniae Radix), *Maidong* (Ophiopogonis Radix), *Beimu* (Fritillariae Bulbus), *Danpi* (Moutan Cortex), *Guijia* (Testudinis et Chelydrae Carapax et Plastrum), *Fushen* (Poria cum Risus), *Yuanzhi* (Polygalae Radix), *Tufuling* (Smilacis Glabrae Rhizoma), *Dan Zhuye* (Lophatheri Herba). Decoct with *Jinghua Shui* (Well water drawn at dawn). After twenty doses, strangury resolved and voice became clear. Subsequently, add *Shu Di Huang* (Prepared Rehmanniae Radix), *Ejiao* (Colla Corii Asini), *Tian Xingren* (Sweet Apricot Seed), *Zao Ren* (Ziziphi Spinosae Semen). Form into honey pills and take until symptoms subside.
(Attached: *Datou Wen* [Big Head Plague], *Nianjing Wen*, *Guanang Wen* [Melon Rind Plague], *Yangmei Wen* [Bayberry Plague], *Geda Wen* [Lump Plague], *Jiaochang Wen* [Intestine-Twisting Plague], *Ruanjiao Wen* [Soft Leg Plague])
Epidemic diseases are caused by pandemic pestilential qi (*Li Qi*). There are major epidemics and common epidemics. Major epidemics spread door-to-door across regions, often occurring after war and famine, and are rare. Common epidemics affect only a few households or individuals in a corner. Symptoms are similar, occurring in spring, summer, and autumn, but most severe in summer and autumn. Pestilential pathogens arise from the stagnation and steaming of damp earth. Upon contact, disease ensues, followed by contagion. Transmission occurs via inhalation through the nose and mouth, entering the *Mu Yuan* (Sea of Origin, a semi-exterior/semi-interior region). *Mu Yuan* is the collateral network of the Stomach Meridian of Foot-Yangming, located anterior to the spine and posterior to the intestines and stomach, close to the exterior and near the Stomach, serving as the boundary between exterior and interior. Pathogens entering via the nose cause dizziness and distension of the head and forehead, and slight aversion to cold on the back. Pathogens entering via the mouth cause nausea, vomiting, chest fullness, umbilical pain, diarrhea, and cold extremities. When pathogens emerge from *Mu Yuan*, high fever occurs. If sweating does not resolve the heat, one must wait for exterior Qi to enter and Essence-Qi to reach the exterior, triggering a violent chills-and-sweat episode (*Zhan Han*), after which the pulse calms and body temperature normalizes. Some resolve via spontaneous sweating. Resolution via the exterior is favorable; sinking into the interior is adverse. Exterior resolution presents with chills-and-sweat, spontaneous sweating, or macules. Interior sinking presents with chest/abdominal fullness and pain, constipation, heat-binding with peripheral flow, diarrhea accompanying heat, vomiting, delirium, and yellow/black prickly tongue coating. Epidemic pulses are neither deep nor floating but rapid, typically stronger on the right than the left, as damp-earth pathogens often invade the Yangming Stomach Meridian. *Mu Yuan* attaches to the Stomach. Yangming lies interior to Taiyang and exterior to Shaoyang, forming the central pathway of the Three Yang meridians. Cold pathogen transmits from exterior to interior; Warm-heat pathogen transmits from interior to exterior; Epidemic pestilence originates from the Yangming central pathway and manifests according to exterior/interior and deficiency/excess, without following meridian transmission rules. Pathogens lodged in the central pathway cause exterior-interior separation but cannot be cleared in one release. Thus, heat may return after sweating; interior harmony may return after purgation, followed by exterior symptoms; exterior symptoms may resolve then interior symptoms appear; there may be exterior-interior predominance or simultaneous transmission. Wu’s *Wen Yi Lun* describes nine types of transmission, summarizing these variations. Ultimately, because latent pathogens disperse and transmit variably, repeated attacks occur despite repeated interventions.
Treatment for epidemic diseases: Exterior release uses Fangfei Douchi (Fermented Soybean), Congbai (Scallion White), Lianqiao (Forsythiae Fructus), Bohe (Menthae Haplocalycis Herba). Interior clearing uses Zhizi (Gardeniae Fructus), Huangqin (Scutellariae Radix), Huanglian (Coptidis Rhizoma), Renzhonghuang (Human Middle Yellow), Huashi (Talcum). Purging uses Mangxiao (Natrii Sulfas), Dahuang (Rhei Radix et Rhizoma). Since epidemics involve turbid pathogens, if they steam hot phlegm and obscure the Pericardium, causing gradual loss of consciousness, aromatic dispersing and draining methods must be used to clear blood collaterals and prevent blockage. Use Xijiao (Rhinocerotis Cornu - note: now substituted with Buffalo Horn), Shichangpu (Acori Tatarinowii Rhizoma), Yinhua (Lonicerae Japonicae Flos), Yujin (Curcumae Radix), Peilan (Agastaches Herba). For irritability, thirst, and excessive sweating, use Shigao (Gypsum Fibrosum), Zhimu (Anemarrhenae Rhizoma). For macules and sore throat, use Xijiao, Niubangzi (Arctii Fructus), Shengdi Huang. For epistaxis and lower bleeding, use Zhizi, Xijiao, Danpi. For fever with diarrhea, use Gegen (Puerariae Lobatae Radix), Huangqin, Huanglian. For chest/diaphragm fullness, use Gualou (Trichosanthis Fructus), Zhike (Aurantii Fructus Immaturus), Jiegeng (Platycodonis Radix). For vomiting and hiccups, use Huoxiang (Pogostemonis Herba), Zhuru (Bambusae Caulis in Taenia). When pathogens mix in the Triple Burner and heat binds in the Blood aspect, strong salty-bitter agents are needed: Xuanshen, Jinyinhua Lu (Honeysuckle Dew), Jinzhi (Golden Juice). Among these, Renzhonghuang and Fangfei Douchi are specific medicines for seasonal epidemics. Fangfei Douchi, fermented from black beans, acquires damp-heat energy, becoming turbid, capable of drawing internal pathogens out via Taiyang sweating. Renzhonghuang, prepared with licorice root soaked in waste matter, specifically resolves intestinal toxicity, evacuating downward, utilizing the principle of like attracting like, thereby resolving both internal and external heat toxins of warm-heat seasonal diseases. Generally, epidemics are dry-heat toxic pestilences; there is no precedent for using acrid-warm dispersants. All acrid-hot drugs for wind-dryness are contraindicated. For major epidemics, one must consider the governing Qi of the year and direction, avoiding rigid adherence to fixed formulas. External manifestations include Datou, Nianjing, Guanang, Yangmei, Geda, Jiaochang, and Ruanjiao syndromes, with their respective treatments listed for reference. These conditions should be studied alongside warm-heat diseases.