Cough, Fever, Vomiting After Every Meal, Wasting Away Fast? — Doctor Zhang Xichun Treated a 22-Year-Old’s Consumptive Cough with Li Quan Yin
Patient search terms: cough / fever / vomiting right after eating / coughing badly at night / getting thinner and thinner / no bowel movement for days Medical terms: consumptive cough (xu lao ke sou) · lung yin deficiency · tuberculosis (lao zhai) · deficiency consumption (xu lao)
Opening: a 22-year-old so thin it broke your heart
Today we continue with another case from Doctor Zhang Xichun (张锡纯). This time the patient was a 22-year-old young man from Shenyang — called Fengtian in those days — the son of a merchant family, named Lou Shuntian (楼顺田). Young as he was, he had fallen into consumptive cough: terribly thin and frail, coughing without stop all day long.
💬 Note from Doctor Luo: Is consumptive cough really tuberculosis? People say the old “consumption” and today’s tuberculosis are the same thing — not necessarily. Tuberculosis can certainly present as consumptive cough, but if the upright qi is truly insufficient, if a person has been chronically weak and the cough grows out of that, the ancient physicians also called it consumptive cough. So consumptive cough may simply be a wasting disease in its own right.
Where did the illness come from? One overheated brick bed
These patients share a common trait: insufficient upright qi — a puff of wind and they catch a cold, again and again, and the lungs begin to have problems. When Doctor Zhang Xichun questioned Lou Shuntian closely, the illness actually had a clear origin — he had slept on a heated kang (the traditional brick bed). When he got up the next morning he felt heat, restlessness and fever in the chest, and from that time on he vomited every time he ate, and coughed badly at night.
💬 Note from Doctor Luo: In northern winters, many families fire their kang so hot you could bake pancakes on it. I know for a fact that plenty of people toss and turn all night on those beds. The heat of the kang scorched the body’s yin fluids — once yin runs dry, heat flares up, and the lungs suffer right along with it.
How bad was it? He couldn’t eat, couldn’t sleep
After more than twenty days of this, Lou Shuntian gave up food and sleep alike — he couldn’t sleep, couldn’t eat, and grew more listless by the day, until finally his spirit was confused and he could barely hold himself together. His family panicked and urgently called in Doctor Zhang Xichun.
💬 Note from Doctor Luo: Twenty-odd days without eating or sleeping — the young man was truly at the end of his rope. When the family came to Doctor Zhang Xichun at this point, they were already desperate. A young man this ill — anyone who saw him felt a pang of pity.
Taking the pulse: eight beats per breath, yet this could be treated
Doctor Zhang Xichun felt the pulse: within one respiration the pulse beat eight times — large and fast — but when he pressed down, it vanished, showing the pulse was empty at the root. With such a fierce pulse, Doctor Zhang Xichun said something surprising: “The pulse is dangerously fast, but this is a newly contracted illness, so there’s no danger; if a chronic illness showed this pulse, then I would not treat it.”
💬 Note from Doctor Luo: Do you catch the logic here? In a new illness, the upright qi can still be rescued, so although it looks dangerous it can be treated; in a chronic illness, qi and blood are already exhausted — a pulse this fast then means there is truly nothing to be done. Doctor Zhang Xichun’s first question was always whether the illness could still be turned around — he knew exactly where he stood.
The prescription: Li Quan Yin — Chinese yam as the base, ginseng paired with asparagus root
The formula Doctor Zhang Xichun gave was Li Quan Yin (醴泉饮, Sweet Spring Decoction) — his formula for consumptive fever: the person is deficient and slightly feverish, with wheezing or coughing, and the pulse is rapid yet weak — fast but feeble. This kind of cough is not caused by external invasion; it arises from insufficient upright qi, and is especially common among the elderly, and more frequent still when heat has damaged yin.
What is in the formula? One liang of dried Chinese yam slices as the base — the same Zhang Xichun approach as always; this time he paired it with ginseng, not bai zhu — ginseng tonifies qi, tonifies lung qi. But ginseng tends toward the warm — what to do? Pair it with tian dong (asparagus root) to temper its heat. Then xuan shen (Scrophularia root) and niu bang zi (burdock seed) to clear heat, and da sheng di (large raw Rehmannia) to nourish yin — because here the yin is deficient and the pulse races. Sheng di at 5 qian, ginseng at 4 qian, xuan shen at 4 qian, niu bang zi at 3 qian, tian dong at 4 qian, plus some sheng zhe shi (raw hematite), and finally 2 qian of gan cao (licorice) to harmonize the formula.
💬 Note from Doctor Luo: The most distinctive ingredient here is hematite. It is a mineral, heavy in nature, able to press things downward. Lou Shuntian had been vomiting continuously; adding hematite presses the medicine down so it cannot be thrown back up. The decoction comes out the color of rusty iron water — a reddish brew that makes many patients afraid to drink it. There’s actually nothing wrong with it — that’s simply the nature of hematite.
One mineral settled the vomiting
The effect was immediate: after one dose, the vomiting stopped — no more vomiting, he could eat again, and the cough had already improved; and after five or six days without a bowel movement, the bowels now moved freely.
💬 Note from Doctor Luo: You see — a patient vomiting this violently, and Doctor Zhang Xichun dared to use a full liang of hematite to press things down. Only when the medicine can stay down can the illness turn around. That single dose seized the most life-threatening pass first: the vomiting.
Integrating Chinese and Western medicine: aspirin taken with sugar water
After three days of adjustments along these lines, the pulse was no longer racing so fast, but it still beat more than six times per respiration, and he still felt heat in the chest. Doctor Zhang Xichun then raised both xuan shen and sheng di to 6 qian, and added a move: each day, a little aspirin taken with sugar water.
💬 Note from Doctor Luo: Isn’t Doctor Zhang Xichun interesting? He used Chinese and Western medicine together! His school was called “medicine integrated with Chinese and Western” (yi xue zhong can xi) — he would never, as some TCM practitioners do today, say Chinese medicine is good and Western medicine must not be touched. He believed in integrating the two traditions — both can be used, combined in cooperation. Aspirin clears heat and drives out pathogenic factors; matched with the yin-nourishing decoction, each handles its own segment.
A few days later, the pulse was calm and the young man recovered
Taken this way, within a few days all the patient’s symptoms were cured, and when the pulse was re-examined, it was normal. A young man so thin he was beyond recognition, who had not eaten for over twenty days, was rescued in just a few doses.
💬 Note from Doctor Luo: Why was this formula so effective? Chinese yam greatly tonifies the qi of the spleen and lungs; paired with ginseng it tonifies lung qi — note that this time he did not use bai zhu; sheng di, xuan shen, niu bang zi and tian dong clear the heat, with niu bang zi additionally expelling pathogenic qi; then hematite presses down with its heavy power, driving the qi movement downward — lung qi must descend for things to work properly. Walk through that logic and you’ll see Doctor Zhang Xichun’s method clearly.
Why was it so effective? Breaking the formula apart
How does this formula differ from the ones discussed earlier? The yin-nourishing herbs are increased — sheng di and tian dong were added precisely to nourish yin. Why ginseng? Because the qi was insufficient. But could ginseng cause fever? Doctor Zhang Xichun’s answer: paired with tian dong, ginseng no longer generates heat.
💬 Note from Doctor Luo: Ginseng and tian dong are a perfect match — just like ginseng paired with mai dong (Ophiopogon root), the ginseng loses its heat. Every pairing in Doctor Zhang Xichun’s prescriptions was deliberate: if you want to tonify qi without generating heat, find a cool, moistening herb to accompany it.
Bonus: What’s the difference between Li Quan Yin and Zi Sheng Tang?
Two cases in a row now — yesterday’s Zi Sheng Tang (资生汤, Nourishing Life Decoction) and today’s Li Quan Yin — both treat lung disease arising from consumption. What’s the difference? Zi Sheng Tang focuses on the spleen and stomach, while Li Quan Yin focuses on the lungs: ginseng tonifies the lungs, Chinese yam tonifies the lungs and also the spleen and stomach, but chiefly the lungs; and the formula nourishes yin as its priority — sheng di, xuan shen, tian dong and niu bang zi are all cool and moistening, with a little hematite to press the qi downward.
💬 Note from Doctor Luo: In treating lung disease, Doctor Zhang Xichun never once omitted Chinese yam — but the pairings were completely different. Zi Sheng Tang pairs the yam with bai zhu; Li Quan Yin pairs it with ginseng plus yin-nourishing herbs, making yin-nourishment the priority, and is specifically for patients whose pulse races. He said it himself: for lung disease arising from consumption, I have many approaches — you must analyze the pattern clearly before the medicine will work. The base herb is always Chinese yam, yet the combinations differ completely, and the results are excellent in every case — that is what made Doctor Zhang Xichun so effective. A young man this gravely ill, brought back in a few doses — we really should study his prescribing logic closely.
Compiled from Doctor Luo Dalun’s lectures on Doctor Zhang Xichun’s case records, from Medical Records Integrated Chinese and Western Medicine (《医学衷中参西录》).