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[Background Information]
Book: Cheng Xingxian's Medical Cases (Cheng Xingxuan Yi An)
Author: Cheng Xingxuan (Cheng Xingxuan)
Dynasty: Qing Dynasty
Chapter: A Miraculous Case of Cough Due to Yin Injury in the Son of Mr. Zhang Rugong's Elder Brother / Subsequently, Several Cases of Summer-Heat Invading the Pericardium in His Daughter and Others Were Untreatable, Along with Four Questions Answered to Disciples
Category: Medical Discussion

[English Translation]

The son of your elder brother was just a child (replacing teeth, approx. 7-8 years old). He began coughing in autumn, which persisted into winter. Initially, he had spasmodic cough with thick, difficult-to-expectorate phlegm, shortness of breath, and facial redness. Gradually, afternoon tidal fever and rapid pulse developed, accompanied by decreased appetite and emaciation. Medications such as Xiebai San (White Powder Decoction for Clearing Lung Heat), Zhisou San (Cough-Stopping Powder), and Qingzao Jiufei Tang (Decoction for Clearing Dryness and Nourishing the Lungs) were tried extensively without effect. Your brother, worried that his frail constitution would lead to "Tong Qie" (pediatric deficiency syndrome susceptible to external pathogens), instructed me to plan treatment. I advised temporarily stopping medication and using one sweet loquat (Shi Xi Ni) daily, peeled and seeded, along with four taels of lean pork, cut into pieces and boiled in clear water for drinking. The meat was eaten with rice gruel. As the child had been ill for a long time, avoiding greasy food, and finding medicine bitter, he enjoyed this palatable remedy. It showed effect within a few days and cured him within ten days. Your brother thanked me and asked for the reason. I said: This case corresponds to Yu Chang's (Yu Xichang) description of "Autumn injury by dryness, winter generation of cough." Dryness should be treated with moistening. The reason previous clearing and moistening agents failed is that the child had innate constitutional deficiency and prolonged cough damaged Yin. All herbal medicines are plant roots/stems; they can only moisten the external dry pathogen but cannot nourish the internal dryness of body fluids. The *Classic of Internal Medicine* states: The production of Yin essence originates from the Five Flavors; five grains nourish, five fruits assist, and five meats benefit. Therefore, using pork, loquat, and rice—substances that moisten and generate fluids—combined in taste and nature, can replenish essence and Qi. How can ordinary formulas compare? Your brother exclaimed: People know medicine cures disease, but do not realize medicine can exacerbate it; people know eating meat may cause relapse, but do not know eating meat can cure disease. From now on, I deeply believe medical principles are profound and difficult to master.

An Bo comments: Reading this case, every word is precious. It shows that medicine requires flexibility and adaptability. Clinging rigidly to fixed prescriptions yields no benefit.

Your brother's daughter had reached her coming-of-age (15 years old) and remained unmarried. At the end of summer, she suddenly felt slight aversion to cold in the evening, followed by high fever at night, headache, and vomiting. I visited the next morning. Her pulse was wiry, urgent, and rapid; tongue coating was white and greasy. I told your brother: The condition belongs to seasonal summer-heat wind invasion, with a severe onset, risking complications. The formula used Ge Gen (Puerariae Radix) and Fang Feng (Saposhnikoviae Radix) to dispel wind, and Xiang Ru (Elsholtziae Herba), Fu Ling (Poria), Gan Cao (Glycyrrhizae Radix), Ban Xia (Pinelliae Rhizoma), Hua Shi (Talcum), and Bian Dou Ye (Vigna umbellatae Folium) to clear summer-heat. The next day, upon re-examination, the pulse and symptoms remained unchanged, but the tongue coating turned yellow, with intense heat, thirst, fixed gaze, and dull spirit. Ge Gen, Fang Feng, and Ban Xia were removed from the formula; Lian Qiao (Forsythiae Fructus), Zhi Mu (Anemarrhenae Rhizoma), Hua Fen (Trichosanthis Radix), and fresh He Ye (Nelumbinis Folium) were added. On the fourth day, the patient sat up on the couch, drowsy and mute. When asked to extend her tongue, she barely extended half, revealing a crimson tip with prickles. Your brother said: Last night, her heat was intense, with irritability, thirst, moaning, and restlessness. At dawn, it subsided slightly, so I thought the illness improved. Unexpectedly, her consciousness became more comatose, and limbs grew cold. Why? I said: This is summer-heat invading the Pericardium (Xin Bao), with pathogenic factors sinking inward. The deeper the heat, the deeper the cold extremities (Re Shen Jue Shen). Liver wind is about to stir. The situation is dangerous; other physicians should be consulted. Your brother insisted on my treatment. I reasoned that summer-heat enters from above, first affecting the Wei (Defensive) level, then gradually entering the Ying (Nutritive) level. Ye Tianshi stated: To clear collateral heat, aromatic herbs must be added to open the orifices internally and clarify the spirit, employing the method of Zhibao Dan (Precious Treasure Pill). Our region lacked this medicine, so I temporarily used Sheng Di Huang (Rehmanniae Radix), Yuan Shen (Scrophulariae Radix), Yin Hua (Lonicerae Japonicae Flos), Mai Dong (Ophiopogonis Radix), Chuan Lian (Coptidis Rhizoma), Xi Jiao (Rhinocerotis Cornu - note: use substitutes in practice), Xian Chang Pu (Acori Tatarinowii Rhizoma), and Xi Gua Cui Yi (Watermelon Rind), decocted with lotus dew. The next day, summoned again, the condition worsened significantly. Eyes closed, limbs convulsing, jaw clenched and teeth grinding. I said: Liver wind has stirred; the condition has become Jing Jue (spasm-coma), which is untreatable. Your brother begged for any chance. Analyzing the condition, the treatment options were limited, and medication failed. Desperately seeking an external method, I had peach-colored loess spread on the ground, covered with lotus leaves, and placed the patient on it. Zixue Dan (Purple Snow Pill) and Niu Huang (Bovis Calculus) mixed with honey were applied to the tongue. Gou Teng (Uncariae Ramulus cum Uncis), Sang Ji Sheng (Taxilli Caulis), and Ling Yang Jiao (Saigae Tataricae Cornu) were added to calm the liver and extinguish wind. On the sixth day, your brother reported: Last night, limb convulsions stopped, jaw opened, showing signs of life. Please examine again. Upon seeing the patient, eyes wide open, mouth agape, with rattling phlegm sounds, and thread-like pulse. I said: This is not cessation of convulsions, but depletion of primordial Qi, lacking strength to move. Pulse and symptoms indicate collapse; death is imminent. She died on the seventh day. Soon after, I saw the case of Mr. Bao E's daughter-in-law.

Mr. Bao invited me to see his daughter-in-law, who, due to greed for coolness amidst heat, initially suffered headache and nausea/vomiting, followed by aversion to wind and fever. Fever persisted. It seemed like an external contraction; I was asked to release the exterior to prevent malaria. In the room, I asked if she had a headache; she did not answer. Asking the maid yielded silence. I said: There are likely signs of death. I declined to treat. Mr. Bao said: Illness is only two days, symptoms are merely fever and headache. Why predict death? I said: Although the harm hasn't manifested, the mechanism is revealed. This illness stems from summer-heat exposure. Summer-heat loves to damage the Heart. The Heart is the Sovereign Official, where Shen (Spirit/Mind) resides. She could not respond to questions, proving pathogenic factors invaded the Pericardium, disrupting the Spirit. According to theory, Heart and Liver are Zang organs. Pathogens entering Zang organs are hard to expel. Since Hand-Foot Jueyin meridians are interior-exterior related, Liver wind and spasm-coma will follow. Within one cycle (five days), disaster is expected. I also described the case of Mr. Zhang's daughter. Mr. Bao agreed but didn't fully believe. Other doctors were consulted, and various symptoms emerged. Indeed, she died on the seventh day, confirming my words. Ten days later, I saw Mr. Xu Limen's niece-in-law.

Mr. Xu Limen was scholarly and knowledgeable in medicine. He summoned me for his niece-in-law. I told him why the cases of the Zhang and Bao women were untreatable. Mr. Xu frowned: My niece-in-law's symptoms are similar. What should be done? I asked duration: five days. Symptoms: Body heat, cold limbs, coma, and convulsions. I said: Pathogens have entered the Zang organs; it is incurable. Her mother-in-law insisted on treatment. Pulse and symptoms were critical. Mr. Xu requested a prescription. I said: Previously, when treating the Zhang and Bao cases, patients could still move, yet were untreatable. How much worse is this? I tried to leave. His servant knelt, begging to treat the woman. She had had fever for three days, unrelenting, with gradual mental confusion and mild hand/foot twitching this morning. I said: This is also summer-heat invading the Pericardium; no need to go. Mr. Xu insisted. We arrived to find the woman lying comatose, with intense heat, coarse breathing, red face, dry lips, inability to extend tongue, crimson color upon inspection, yellow coating, and wiry-rapid pulse. I refused medication. The servant pleaded. Reluctantly, I proposed a formula to clear summer-heat and open orifices aromatically, advising a bed of loess and lotus leaves. The next day, the servant reported the mistress had died. The wife's fever subsided, convulsions stopped, and spirit cleared after medication adjustments; she recovered. A year later, I saw Mr. Hong Ruichun's niece-in-law.

Mr. Hong's niece-in-law fell ill in mid-summer. After four days, intense heat, coma, yellow tongue, thirst, cold limbs, and fine pulse. I diagnosed: Summer-heat invading the Pericardium internally, a棘手 (thorny/difficult) condition. Mr. Hong urged treatment. I suggested clearing summer-heat and eliminating pathogens, aided by aromatic orifice-opening herbs, warning: If heat reduces and spirit returns, there might be hope. If Liver wind stirs, it is incurable. Critics argued my formula was too cooling. Another doctor was hired, diagnosing Yin-cold due to cold limbs and fine pulse, prescribing Ginger (Gan Jiang) and Aconite (Fu Zi), ignoring Yang-pathogen aspects. Local custom favors hot over cold meds; diet is rich/greasy. Relatives gathered, assuming young newlyweds should be treated as Yin-cold. Mr. Hong, ignorant of medicine, followed the crowd. Friend Fang Ruizheng (patient's cousin) was present, saw the conflicting prescription, and asked why. I explained: Summer-heat entering Zang organs causes extreme heat mimicking cold; it is not Yin-cold. Urgent clearing is needed; adding Ginger/Aconite is like adding oil to fire. Fang suggested telling the aunt-in-law not to take the other meds. I replied: You are kind, but while I can predict death from wrong meds, I cannot guarantee life from mine. They took the other meds. Liver wind stirred violently: back arching, jumping feet high, crawling on bed/mats, biting tongue/teeth. Died within five days. Among my cases, none were as severe, largely due to the drying/hot nature of Ginger/Aconite clashing with the heat. Over ten years later, I saw Wu Weiyang's daughter.

Mr. Wu's daughter, married to the Hong family (Grandpa Xingheng's niece-in-law), nearly twenty, thin and weak. Grandpa Xingheng's son returned from trade due to illness; the daughter-in-law cared for him, accumulating worry and fatigue during muggy summer. She had alternating chills/fever, then persistent fever, headache, vomiting. I diagnosed Summer-Heat Wind conflict, prescribed light resolving agents. Next day, pulse/symptoms unchanged, spirit unclear. I warned Grandpa Xingheng: Condition is severe, risk of transmission. Inform relatives. Add heat-clearing/pathogen-resisting herbs. Fourth day: Intense heat, irritability last night, deeper confusion this morning. I examined and said: Pathogens entered Zang organs; Liver wind will arrive soon. Patient is frail and overworked; unlikely to survive. I recounted previous cases and urged early consultation. Mr. Wu sought strategies. I reluctantly added aromatic orifice-openers to yesterday's formula to exhaust human effort. Fifth day dawn: Grandpa Xingheng sent messenger. I declined, but was persuaded. Found patient comatose, convulsing, phlegm rattle in throat. I said: Internal closure and external collapse. No power to help. Other doctors' meds ineffective. Died next day.

An Bo comments: When critical symptoms converge, even skilled hands are useless. Prescribing is merely to fulfill a physician's compassionate heart.

Disciple asks: Summer-heat invading Pericardium is rarely detailed by ancients. Ye Tianshi's cases show treatments, implying it's not always fatal. Two-meridian contraction (Liang Gan) in Cold Damage is considered most critical, yet Ye implies treatability. Are Mr.'s cases truly more critical than Liang Gan and incurable?
Reply: Liang Gan is critical, but pathogens affect both exterior and interior, allowing some basis for treatment. Summer-heat changes unpredictably; its violent onset is so fast that even Bian Que couldn't diagnose and prescribe in time. The Heart is the Sovereign; Pericardium is its outer shield. Invasion here is extremely critical and urgent, unlike other conditions.
Disciple: Understood. But among many summer-heat patterns, are there comparable ones?
Reply: Yes. Pediatric summer-heat fever causing sudden coma and convulsions (Summer-Heat Wind Acute Convulsion) is similar in presentation and origin. However, children often get convulsions, while adults get Pericardium invasion. Pediatric cases are 70-80% curable; adult cases are 10-20% curable. Children have weak constitutions and immature Zang Qi, making pathogen entry easy and exit easy (easy to treat). Adults have strong constitutions and mature Zang Qi, making entry hard and exit hard (hard to treat). Thus, understanding this clarifies the pathology.
Disciple: Ancient texts distinguish cold/heat and warm/cool drugs. These cases all use heat-clearing, pathogen-resisting, and aromatic opening. Are there other methods?
Reply: Most diseases have cold/heat variations and warm/cool drugs. This specific condition has heat but no cold. Like Warm Diseases, it involves Yang but not Yin; thus, cold drugs are used, avoiding heat. Sudden death belongs to Fire. Bitter-cold drugs might stagnate, but summer-heat is fierce. Regarding the Eight Methods: Sweating is unsuitable for Zang invasion; Purging is for Fu organs, not Zang; Warming clashes with heat; Harmonizing/Diuretics are irrelevant; Vomiting is for phlegm/food in chest, not Zang pathogens; Tonification is for sinking pathogens in Cold Damage, but here pathogens are pervasive and blocking, so tonification is useless without clearing. Like fighting a fire, only water works. For pediatric summer-heat convulsions, those with solid constitutions tolerating cooling can be treated; those with deficient constitutions cannot. Similarly for adults. The servant girl I cured survived because she had a robust constitution from poor diet. Those with rich diets and weak constitutions rarely survive.
Disciple: *Shanghan Lun* says Taiyang headache resolves in 7+ days as the meridian cycle ends; otherwise, needle Foot-Yangming to stop transmission. Can we prevent summer-heat from entering Zang like preventing Cold Damage transmission?
Reply: Not easily. Before Cold Damage transmits, there are signs. Before summer-heat enters, there are no specific signs. Early symptoms (fever, headache, vomiting, thirst) mimic common summer-heat. Only with wisdom eye can one predict invasion. *Neijing* compares stroke to falling into water—sudden and unpredictable. However, once entered, it must be recognized. In summer-heat diagnosis, if after 2-3 days the patient's spirit appears slightly dull, it signals invasion. This insight comes from experience. Once known, if invasion is shallow and Liver wind hasn't stirred, one might try to prevent deepening. But summer-heat moves like lightning; efforts are often futile without clinical observation. I share this due to your questions, regretting I lack the legendary ability to save lives from near-death.

An Bo comments: When critical symptoms gather, even wise minds fail. Prescribing is but a gesture of compassion.