Swollen Feet That Pit When Pressed? Doctor Xue Lizhai Cured Post-Dysentery Edema with Buzhong Yiqi Tang Plus Fuzi
Patient search terms: swollen feet / leg swelling / feet that pit when pressed / urinating less / little urine / whole body swollen / shortness of breath / swollen eyes / feet swell after diarrhea gets better
Medical terms for this condition: edema · spleen qi sinking · spleen deficiency with stagnation (pi) · lung failing to generate kidney water · chronic nephritis · nephritic edema
Opening: swollen feet are a signal you must not ignore
Today’s story is about Doctor Xue Lizhai — the director of the Imperial Academy of Medicine in the Ming dynasty. His given name was Ji (己), his courtesy name Xinpu (新甫), and his style name Lizhai. He came from Wuxian, Jiangsu, from a family of imperial physicians, and he left behind more than three thousand case records. The patient he treats today has a problem that can be summed up in two words: swollen feet.
💬 Note from Doctor Luo: Please don’t take foot swelling lightly. These days a huge number of people have swelling in the legs and feet. Whenever the feet swell — and press down and they pit, leaving a dent — there is definitely something wrong. Why else would it swell? It means the body’s water metabolism has gone wrong. And why has the water metabolism gone wrong? Because some organ is in trouble — it no longer has the strength to distribute the fluids. So whenever your feet swell, don’t shrug it off: go find a doctor and get the root problem corrected. Only then can the body be healthy.
Who was the patient? Yang Wenkui, a scholar who read all day
Doctor Xue Lizhai had a habit in his case records: he wrote down the patient’s occupation. Today’s patient is recorded simply as “the Confucian scholar Yang Wenkui.”
💬 Note from Doctor Luo: Don’t let the word “scholar” (ru zhe) slip past you. When Chinese medicine records a person’s occupation, it matters a great deal. What is a Confucian scholar? A person who reads books day after day. Reading all day depletes the upright qi and means constant overthinking — and what does overthinking injure? Overthinking injures the spleen. So this kind of person has a relatively high chance of spleen deficiency. You get laborers, you get farmers — that is a different situation entirely. A scholar lives in a completely different state.
What illness did Mr. Yang suffer before this? Dysentery — diarrhea pouring out, draining violently. He was finally over it, but then both his feet swelled up.
The symptom triad: swollen feet, a bloated belly, and little urine
After the dysentery healed, Yang Wenkui’s symptoms were: both feet swollen (liang zu fu zhong); chest and abdomen distended and full (xiong fu zhang man) — his chest and belly felt bloated and stuffy, even breathing felt tight; and scanty urine (xiao bian duan shao) — his urine output dropped sharply.
💬 Note from Doctor Luo: If someone came to see me today with both feet swollen, I would tell them: first, go get a urinalysis. Someone will say, “A urine test — that’s Western medicine!” No, it isn’t. All methods of examination belong to no single camp — Chinese or Western. If the ancients had had a urine test, they would have used it too. The ancients also dreamed of seeing through the body — when Bian Que drank the “water from above the pool” and could see through walls, that was a kind of X-ray vision; the ancients wished they could look inside the organs. Modern testing equipment is a development that belongs to everyone. Why should a machine made in a factory only be used by Western doctors and forbidden to Chinese doctors? That is the Chinese medicine community drawing a fence around itself. A urine test gives you one more indicator of what is happening in the organs — of course that is a good thing. So don’t be upset when a doctor at a TCM hospital orders a urine test. We are all working for the patient; whoever has the ability should be allowed to use it — stop squabbling.
What does a urinalysis look for? Occult blood and protein — in other words, whether the kidneys have suffered real damage, whether there is chronic nephritis, and so on. With chronic nephritis, some people do get swollen feet.
The previous doctor’s treatment: the more he drained, the worse it got — then came the wheezing
Yang Wenkui first went to another physician. What was that physician’s approach? Draining and diuretic formulas (fen li zhi ji).
💬 Note from Doctor Luo: What is a “draining and diuretic formula”? It is a TCM method: if your urine is scanty, increase the urine output. In the earlier dysentery phase the stool was loose, so the doctor would drain the water out through the urine instead — this is called “regulating the waterways.” The herbs used are bland, percolating, dampness-draining medicines that promote urination — herbs like ze xie (alisma) that send water downward.
And the result? Not only did the illness not improve — something serious happened. What started as swollen feet became a whole body that swelled up, and on top of that he began to wheeze — whole-body swelling with breathlessness!
At his wit’s end, he came to Doctor Xue Lizhai.
Doctor Xue’s analysis: four symptoms, every one pointing to spleen deficiency
Doctor Xue looked carefully and analyzed the case point by point:
“Both feet swollen — the spleen qi has sunk.” Both feet swollen means there is too much water, and the water has nowhere to go, so it runs downward. Why is there too much water? Because of spleen deficiency. The spleen belongs to Earth, and Earth controls Water — the earth is what manages water. One of the spleen’s essential jobs is that when spleen qi is sufficient, it can hold and restrain the body’s fluids and keep them moving in their proper channels. If spleen qi is deficient, its restraining power weakens, the water scatters and leaves its proper track. The nature of water is heavy and turbid, inclined to flow downward — so it easily produces swollen feet.
“Chest and abdomen distended and full — spleen deficiency producing stagnation (pi).” The spleen is deficient and lacks the strength to transport and transform; the qi is insufficient and cannot move the qi and dampness along; the qi in the chest and abdomen gets stuck and blocked there — hence the fullness. This is a manifestation of deficiency.
💬 Note from Doctor Luo: Look at people nowadays who are fat, who carry a big belly — most of them have spleen deficiency. Why so much phlegm-dampness? Because the spleen is deficient and cannot transport and transform the water-dampness, cannot dissolve the turbid phlegm. In a person with spleen deficiency, the middle burner gets blocked very easily.
“Scanty urine — the lung fails to generate kidney water.” Why is the urine output small? The spleen is deficient, so spleen Earth cannot generate lung Metal; and lung Metal cannot generate kidney Water — this is the five-element cycle of generation: Earth generates Metal, and Metal generates Water. When kidney water is insufficient, the urine decreases.
“Whole-body swelling with wheezing — the spleen fails to generate the lung.” After the draining formulas, the whole body swelled and he started wheezing: the lung qi had grown even weaker. Why? The draining formulas are all bland, percolating, dampness-draining herbs that send things downward. If you don’t tonify the spleen and only drain the water, you easily drain away the upright qi as well — you leak the qi itself.
💬 Note from Doctor Luo: The masters like Li Dongyuan paid special attention to exactly this. Li Dongyuan used these bland, percolating, dampness-draining herbs with great caution, because he had seen too many patients whose qi was already deficient and sinking — and if you keep draining downward, the qi can be injured even more. You must observe the proportions. This patient’s spleen and stomach were already severely deficient, and the previous doctor kept draining the water out. Yes, a little water came out, but the upright qi was damaged: the spleen failed, and then the lung failed — and the lung governs the qi of the whole body and is the “upper source of water.” Hence the whole body swelled, and the wheezing came from lung deficiency.
The prescription: Buzhong Yiqi Tang plus fuzi — better in two doses
The whole body was deficient; which organ was most deficient of all? The spleen qi. So Doctor Xue’s treatment was decisive and simple: Buzhong Yiqi Tang (Replenishing the Middle and Augmenting Qi Decoction) plus fuzi (aconite).
💬 Note from Doctor Luo: Buzhong Yiqi Tang tonifies the spleen qi and lifts it upward a little. Why add fuzi? Because this kind of patient has a slight insufficiency of yang as well — yin cold has gathered inside, water-dampness sits in the middle burner — so you add a small amount of yang-warming medicine. Tonify the spleen qi on one side, warm the yang on the other — both hands working together. Doctor Xue’s diagnosis was exceptionally accurate. He went straight to Buzhong Yiqi Tang, which shows he had already judged it clearly: spleen deficiency, with the qi sinking downward.
The result: better in two doses — two doses of the formula, and the illness was cured.
💬 Note from Doctor Luo: This is what makes Chinese medicine so interesting. Sometimes, to treat a problem in the lower part of the body, you don’t drain downward — you lift the qi upward. As the qi is lifted and set in motion, the descending side stops sinking on its own; the qi machinery starts turning and becomes unobstructed, and the illness clears. Doctor Xue used Buzhong Yiqi because his diagnosis was spleen deficiency with sinking qi — so he lifted.
Six months later it returned: same formula, same effect
But the case does not end there. Half a year later — because of careless eating and overwork (yin shi lao juan): he paid no attention to his diet and exhausted himself again — Yang Wenkui’s eyelids swelled (liang mu fu zhong) and his urine became scanty again. The same mechanism as before: spleen qi deficiency.
What to do? He took the same formula — Buzhong Yiqi Tang plus fuzi — and it worked at once (dun yu).
💬 Note from Doctor Luo: A person like this should be careful from now on: avoid excessive fatigue, and use food therapy to tonify the spleen in daily life. Nourish it slowly, and he should be fine. The trouble comes when you don’t regulate yourself day to day and only take medicine when you’re sick.
Why didn’t Doctor Xue tonify the kidney?
Someone may ask: swollen feet and scanty urine — isn’t that a kidney problem? Wouldn’t Jinkui Shenqi Wan (Kidney Qi Pill) or Guifu Dihuang Wan (Cinnamon and Prepared Rehmannia Pill) work?
💬 Note from Doctor Luo: Honestly, if it were me, I might also have thought: “Hmm, Guifu Dihuang might do, right?” But Doctor Xue identified the organ precisely. He saw that the fluids were scanty — why was the urine little? Because the lung was deficient, and the deficient lung could not generate kidney water. So he did not use a kidney-tonifying method. Instead he tonified the spleen to generate lung Metal, letting lung Metal generate kidney water — and then the urine volume naturally increased by itself. Once the urine volume is up, urination returns to normal. If your urine is scanty, Guifu Dihuang Wan would definitely not be appropriate. Doctor Xue’s localization was extremely precise — he could see exactly which organ was diseased. With one simple formula, Buzhong Yiqi Tang plus fuzi, the problem was solved.
Going further, part one: the two big types of foot swelling — the damp-heat type
Having told this case, Doctor Luo expands on foot swelling in general. The causes are many, but they can be roughly divided into two big categories.
The first big category: the damp-heat type. This kind of damp-heat is usually tied to damp-heat in the kidney meridian. If you get tested today, there may be red blood cells and protein in the urine — the kidneys may be damaged. Sometimes external pathogenic qi was never fully cleared; sometimes other causes have led to chronic kidney disease. What to do in this situation? Clear the damp-heat.
How do you tell it apart? Look at the tongue: the underside of the tongue should be red, and the coating may be somewhat thick; the pulse is relatively rapid (mai shu). This tells you there is heat inside — damp-heat. In this situation, do not blindly tonify — when damp-heat is present, you should disperse wind and clear heat, remove dampness, cool the blood and invigorate the blood.
💬 Note from Doctor Luo: This is the approach of the late Professor Zhao Shaoqin of Beijing University of Chinese Medicine in treating kidney disease. According to Professor Zhao’s analysis, a great many cases of chronic nephritis involve damp-heat, so his treatment was one single thread: cool the blood and invigorate the blood. He used fang feng (saposhnikovia), jing jie (schizonepeta), bai zhi (angelica dahurica), du huo (doubleteeth pubescent angelica) — why? To disperse wind and drive out dampness; dan shen (salvia) and qian cao (madder root) — to invigorate blood and unblock the collaterals; lu gen (reed rhizome), mao gen (imperata root), huai hua (sophora flower) — to cool the blood. A very small, simple formula — yet cooling the blood, invigorating the blood, dispersing wind and removing dampness works extremely well. If the patient keeps taking it, in general the chronic kidney condition — once the damp-heat is scattered and the meridians unobstructed — gradually heals.
Going further, part two: Doctor Luo’s mother — chronic nephritis with chills so severe she wore wool pants in summer
At this point Doctor Luo tells a story from his own life.
💬 Note from Doctor Luo: When I was a student at Beijing University of Chinese Medicine, I learned Professor Zhao Shaoqin’s approach. Not long after I got home, my mother came down with chronic nephritis — in the heat of summer she was afraid of the cold and wore wool pants. Everyone else was in T-shirts; she was freezing, utterly depleted. Her back ached, she couldn’t stand, she was terribly weak. Western medicine had little to offer — for kidney disease, beyond hormones, there isn’t much — and the doctors told us plainly: “She will go into kidney failure. Prepare for it. Prepare for a transplant.” So what did we do? I said, “I just finished studying this — let me regulate you.” And I regulated her — cooling the blood and invigorating the blood. Honestly, at the time I hesitated a lot: she was this cold — wasn’t this yang deficiency? I wavered for a long time. But I trusted Professor Zhao Shaoqin’s experience, and I used the cooling herbs on her. As the treatment went on, the kidney disease healed. Her clothes got lighter and lighter, until she wore the same as the rest of us — no longer afraid of cold, her body completely normal. She is thoroughly well now.
A few days ago, a friend’s father had the same kind of problem: something he took damaged his kidneys, his feet swelled badly, and the skin turned deep — almost black. I took one look: damp-heat. Again I used Professor Zhao Shaoqin’s formula, and as he kept taking it, the swelling in his feet went down day by day. When he went back for kidney tests, the indicators were normal — before, there were red blood cells and protein, the kidneys were damaged; now all of it was fine. So there are very, very many kidney patients, and they suffer terribly. They all know the future on the horizon is uremia — in the Western medical textbook this is irreversible, and the patient slowly slides into kidney failure. I truly hope more people learn Professor Zhao Shaoqin’s method for kidney disease. I will keep spreading it.
Going further, part three: the other big category — deficiency, even yang deficiency
The second big category of foot swelling is the deficient kind — even yang-deficient.
💬 Note from Doctor Luo: The patient in Doctor Xue’s case was qi deficiency leaning toward yang deficiency. Generally speaking, qi deficiency and yang deficiency often combine, each feeding the other. For qi deficiency leaning to yang deficiency, the Guipi Tang (Spleen-Restoring Decoction) approach also works, and Shenling Baizhu San (Ginseng, Poria and Atractylodes Powder) is fine too — both tonify the spleen. But Doctor Xue determined that this patient’s qi machinery had sunk — it was going downward — so he lifted it up. That is a wonderful idea: sometimes in Chinese medicine, to treat a disease of the lower body, you don’t drain downward; you lift the qi. Lift it, and the descending stops; the qi machinery turns and becomes unobstructed.
Why did Doctor Xue add fuzi? Because he judged there was a bit of yang deficiency — and with yang deficiency you warm the yang, to overcome the yin cold: warm the water, transform it, and let it distribute. So this was a syndrome leaning to yang deficiency and qi deficiency, treated through the spleen: make the spleen qi sufficient, let the upright qi rise and be lifted, and it gains the strength to transport water and redistribute the fluids — and the illness is cured.
Doctor Luo’s closing note: swollen feet — don’t be careless
The core of today’s case is two words: swollen feet.
💬 Note from Doctor Luo: Foot swelling has all kinds of causes. As I analyzed with you, there is the damp-heat type and the yang/qi deficiency type — roughly these two main kinds. Don’t use the treatments backwards. But whichever kind it is, if the feet swell and pit when pressed, don’t be careless — it means the body’s water metabolism has gone wrong, some organ is definitely in trouble, and it no longer has the strength to distribute the fluids. Get it regulated in time, remove the root cause, and the body can be healthy.
The number of kidney patients in China is enormous — some statistics say one in ten, nearly a hundred million people. I’m not sure it’s that many, but kidney patients are certainly very numerous. Kidney disease causes no trouble at first; left to drag on, it gets worse and worse, until finally it reaches uremia — and then it is truly painful: you must undergo dialysis, regularly, and in the end perhaps a kidney transplant. Without dialysis or a transplant, death comes quickly. So this is a major disease threatening human health — everyone should take precautions. Whenever I get the chance, I will talk more about kidney disease. If I can really explain one disease clearly to ordinary people and give them this knowledge, I will feel I have accomplished something.
Based on Doctor Luo Dalun’s lecture on Doctor Xue Lizhai’s case records; the case is from The Summary of Internal Medicine (《内科摘要》) by Xue Ji, included in The Medical Case Records of Xue Lizhai (《薛氏医案》).