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Baihe Disease (Lily Disease) arises primarily from the recent recovery from an epidemic febrile disease. At the junction of the Sanjiao (Triple Burner), couli (interstices), Ying (Nutritive Qi), and Wei (Defensive Qi), residual heat remains unclarified, while Zheng Qi (Upright Qi) is exhausted and unable to flow smoothly. It is like a person amidst clouds and mist, suddenly clear then turbid; or like the sun and moon after an eclipse, sometimes bright, sometimes dark. Thus, there are various indescribable manifestations. The symptoms of bitter taste in the mouth, red urine, and a slightly rapid pulse are signs of residual heat. The disease does not reside in the meridians or zang-fu organs. Yang notes: This sentence warrants consideration. Treatment cannot employ tonification, purgation, warming, or cooling methods; it focuses primarily on clearing Qi-level heat. Qi belongs to the Lung, which governs all vessels. "Yi Zong" (One Source) implies unity, meaning the pathology affects the whole body. Headache during urination occurs because urination relies on Qi transformation; when water leaves, fire flares upward. In severe cases, recovery takes sixty days, as two lunar cycles allow Yin to recover. Chills during urination indicate emptiness of Bladder Fu Qi, leading to a loss of Defensive Qi protection. Dizziness alone indicates that Yang Qi fails to ascend. As heat declines and symptoms lighten, recovery accelerates. "Its symptoms" refers to headache during urination and similar signs. "Premonitory signs before disease formation" means symptoms like headache appear before Baihe Disease fully develops. Baihe (Lily Bulb) clears heat and nourishes Yin, specifically moistening Lung Qi. Using Baihe for treatment gives the disease its name.

Wang Shixiong adds: Zhang Zhongjing used Baihe as the main herb, hence the name. Actually, this is a condition where residual heat lingers in the Lung Meridian. It occurs after warm, summer-heat, or damp-heat diseases, not necessarily epidemics. The Lung governs Po (Corporeal Soul); if Po is unsettled, it feels like spiritual possession. If Lung loses its descending function, urine becomes red. Since Baihe specializes in clearing the Lung, it serves as the Sovereign herb. Yang notes: The previous annotation was sound and accessible; reading this one feels more intimate, suggesting the previous one was somewhat detached. I once said Mengying’s (Wang Shixiong’s) scholarship was unparalleled. Comparing his annotations with ancient ones will prove my words are not flattery. Recalling late spring of the Xinchou year, while serving in Lanxi at Yanzhou, I saw a woman suffering from this condition. Her parents thought it was a spirit affliction. I asked if it started after an epidemic illness and found her pulse rapid. Since Baihe was unavailable, I prescribed Weijing (Eupatorium Herb), Maidong (Ophiopogon Tuber), Sigua Zi (Luffa Seed), Dongguapi (Winter Melon Rind), and Zhimu (Anemarrhena Rhizome). Wang notes: Baihe treats the Lung; realizing this connection is logical yet unexpected. One dose brought improvement; two doses cured her.

In Baihe Disease, if Yin-type manifestations predominate, treat with Yang-methods; if Yang-type manifestations predominate, treat with Yin-methods. Treating Yang manifestations by attacking Yin and inducing sweating is contrary (Ni); treating Yin manifestations by attacking Yang and using purgation is also contrary.

This section explores the origin of Baihe Disease. "Manifesting in Yin" means the Yin aspect is affected by pathogenic factors. If Yin is affected and not immediately harmonized with Yang, Yin pathogens become closed off; thus, one should attack Yang to rescue Yin. "Manifesting in Yang" means the Yang aspect is affected. If Yang is affected and not harmonized with Yin, Yang pathogens fail to transform; thus, one should attack Yin to rescue Yang. Failing to attack Yin to rescue Yang, but instead inducing sweating, constitutes "attacking Yang upon seeing Yang." Failing to attack Yang to rescue Yin, but instead using purgation, constitutes "attacking Yin upon seeing Yin." Both are contrary treatments due to improper methods preventing the resolution of Yin-Yang imbalance, leading to Baihe Disease. If there are no indications for sweating or purgation in Baihe Disease, these methods should not be used. This logic applies to emesis, sweating, and purgation. Here, "Yin and Yang" refer specifically to Ying and Wei Qi, not Blood, Qi, or Zang-Fu organs.

For Baihe Disease persisting after sweating, Baihe Zhi Mu Tang (Lily Bulb and Anemarrhena Decoction) is indicated. Sweating injures Yang-level fluids, allowing residual heat to linger. Harmonizing Yang requires Yin; Baihe combined with Zhi Mu and Spring Water clears residual heat, resolving Yang pathogens. Note: Early disease involves heavy pathogens, requiring rescue or attack; post-disease residual pathogens require harmonization.

For Baihe Disease persisting after vomiting, Baihe Jizi Huang Tang (Lily Bulb and Egg Yolk Decoction) is indicated. Vomiting causes rebellion from above, injuring Yuan Qi more than sweating. Yin Fire ascends, obscuring clear orifices. Jizi Huang (Egg Yolk), being purely Yin and blood-nourishing, assists Baihe to harmonize Heart and Lung, employing Yin to harmonize Yang.

For Baihe Disease persisting after purgation, Baihe Huashi Daizhe Tang (Lily Bulb, Talcum, and Hematite Decoction) is indicated. Purgation damages Yin excessively; Yin deficiency allows Yang pathogens to invade, causing Lower Jiao heat signs. Adding Huashi (Talcum) and Daizhe (Hematite) to Baihe Tang calms rebellion, opens orifices, and unblocks Yang. This is using Yang to harmonize Yin.

For Baihe Disease not treated with emesis, purgation, or sweating, with symptoms remaining unchanged, Baihe Dihuang Tang (Lily Bulb and Rehmannia Decoction) is indicated. Without these treatments, Zheng Qi is intact, but pathogenic heat affecting Yin-Yang may not resolve, causing Baihe Disease variations. "Symptoms unchanged" refers to initial signs. Dihuang juice drains blood-level stasis-heat, causing black stool (not for tonification). Baihe clears Qi-level residual heat, achieving Yin-Yang harmony.

If Baihe Disease persists for a month and transforms into thirst, Baihe Xi Fang (Lily Bulb Wash Formula) is indicated. Prolonged Baihe Disease consumes fluids, causing thirst seeking self-nourishment. If thirst does not progress to Xia Xiao (Lower Wasting-Thirst), the disease remains in the Lung. The Lung governs skin and hair; washing with Baihe decoction promotes circulation between hair follicles and vessels, returning essence to the Fu organs. Eating Zhu Bing (boiled wheat noodles) utilizes Wheat Qi to assist fluid generation. Avoid Yan Chi (salted beans) as salt may deplete fluids and worsen thirst.

If thirst persists despite the wash, Gualou Muli San (Trichosanthes Root and Oyster Shell Powder) is indicated. Yang notes: This condition is heavier than the previous one. Wang Shixiong adds: You Zaijing stated: Thirst developing after Baihe Disease, failing to improve with washing, indicates intense heat damaging fluids. Gualou Gen (Trichosanthes Root) is bitter and cold, generating fluids and stopping thirst. Muli (Oyster Shell) is salty and cold, guiding heat downward to prevent upper scorching. This annotation is comprehensive; Chen’s is inferior, so we follow You.

If Baihe Disease transforms into fever, Baihe Huashi San (Lily Bulb and Talcum Powder) is indicated. Fever results from residual pathogens lingering and invading the muscle layer, entering the Yang level. Baihe clears Metal and reduces heat; adding Huashi opens orifices and unblocks Yang. Slight diuresis daily indicates heat exiting via urine.

Hu E Disease resembles Taiyang disease. The patient is silent, desires sleep, cannot close eyes, and is restless lying down or sitting up. Erosion of the throat is called "E"; erosion of the genital/anal region is called "Hu". There is aversion to food odors and poor appetite. The face alternates between red, black, and white. Erosion in the upper part (throat) causes hoarseness, treated with Gancao Xi Xin Tang (Licorice and Heartsease Decoction). Erosion in the lower part causes dry throat, washed with Kushen Tang (Sophora Decoction). Erosion of the anus is fumigated with Xionghuang (Realgar).

Baihe Disease involves residual heat lingering in Qi mechanisms; Hu E Disease involves residual toxins accumulating in deep Yin. Hu E refers to water insects. Epidemic pathogens are essentially damp-heat; prolonged stagnation generates worms. Gu Tingquan noted: Prolonged epidemic pathogens kill humans; "prolonged" should specify "residual pathogens". The throat and orifices are moist, favoring worm growth. Hoarseness indicates throat erosion; dry throat indicates genital erosion, caused by heat stagnation preventing fluid ascent. Internal heat retention mimics Taiyang disease. Internal heat causes silence and desire to sleep. Internal vexation causes inability to close eyes and restlessness. Facial color changes are due to fluctuating heat, not worm movement. Kushen and Xionghuang dry dampness and kill worms. Gancao Xi Xin Tang moves Middle Jiao Qi, transforming damp-heat, and uses bitter-pungent combinations to kill worms. Referencing You’s views.

Patients with a rapid pulse, no fever but slight vexation, silence, desire to sleep, and sweating: After 3-4 days, eyes turn red like a turtledove’s; after 7-8 days, eye corners turn black. If the patient can eat, pus has formed. Chixiao Dou Danggui San (Adzuki Bean and Angelica Decoction) is indicated.

This is epidemic heat-toxin hidden internally. Hence, rapid pulse, no fever, slight vexation, and desire to sleep. Initial sweating indicates open exterior Qi. Red eyes at 3-4 days indicate heat injuring Blood levels. Black eye corners at 7-8 days indicate blood corruption. Ability to eat indicates the disease is not in the chest/abdomen but pus forms below. Chixiao Dou (Adzuki Bean) clears heat, removes dampness, and detoxifies. Danggui (Angelica Sinensis) harmonizes blood and resolves pus, expelling toxins downward.

Ancestor Yu Jiayan cited "Clear pathogens strike the Upper Jiao, turbid pathogens strike the Lower Jiao" from Bian Mai Pian as evidence of Zhang Zhongjing discussing epidemics, showing unique insight. His treatment prioritizes eliminating filth. Upper Jiao is like fog; lift and eliminate, plus detoxify. Middle Jiao is like fermenting vat; dredge and eliminate, plus detoxify. Lower Jiao is like drain; discharge and eliminate, plus detoxify. This insight surpasses ages.

Wang Shixiong adds: Lin Beihai also said Yu’s theory on epidemics surpasses antiquity, revealing what predecessors missed. Zhang Zhongjing discussed vomiting/diarrhea and cholera from transient cold-heat, so surely he addressed epidemic plagues? Thus, epidemic patterns in Shanghan Lun are not speculation. Kun (Wang’s self-reference) lacks profound knowledge and dares not disrupt classics arbitrarily, but categorizes Shanghan/Jingui patterns incompatible with wind-cold methods as epidemics.

Wang Shixiong adds: Shouzhen discussed Warm diseases, Kui discussed Summer-heat, Keyou discussed Epidemics. Though seemingly innovative, they remain within Zhang Zhongjing’s framework.

Yang notes: This collection is excellent, covering ground unknown to ancients. However, original texts have many obscure points and mismatches between formulas and diseases. Readers should grasp the intent without forcing interpretations on unclear parts. Wang notes: This critique is brilliant; one must not be fooled by ancients. "Believing everything in books is worse than having no books."