Is Back Pain Always Kidney Deficiency?

What people search for: back pain / low back pain / back pain so bad I can’t stand straight / back pain keeping me awake at night / lower back ache / my back feels ruined

Medical terms for this condition: back pain (yao tong) · intermingled stasis and heat (yu re hu jie) · blood amassment syndrome (xu xue zheng) · ruinous case of cold damage (huai zheng)

Opening scene: back pain — and nine people out of ten instantly think “kidney deficiency”

Mention back pain, and most people’s first thought is: kidney deficiency! Tonify the kidney! But in this case from the late Ming and early Qing, Doctor Yu Jiayan faced a patient whose back hurt so much he could not stand straight — and instead of tonifying the kidney, he prescribed a decoction of da huang (rhubarb) and mang xiao (Glauber’s salt) that purges downward, together with rou gui (cinnamon) and fu zi (aconite) to warm the yang. Two large doses later, the man could stand up again. So what is back pain really about? Let’s begin with this case.

💬 Note from Doctor Luo: This case is especially valuable because it shatters a deeply ingrained assumption — “back pain equals kidney deficiency.” Doctor Yu Jiayan’s case tells us that a great many people’s back pain is not kidney deficiency at all; it is intermingled stasis and heat (yu re hu jie). Stagnant blood blocks the lower back while heat stays trapped inside. If you keep tonifying the kidney in that situation, it will never get better — no matter how you adjust the formula, it won’t work. What you need is to cool the blood and move the blood.

Who was the patient: an external-contraction illness botched by treatment — the “ruinous case”

The patient was the younger brother of Mr. Zhang Lingshi. How did he fall ill? First he contracted shang han (cold damage) — in the old days, all externally contracted illnesses were called “cold damage,” because the warm-disease (wen bing) school had not yet fully taken shape; it was only just sprouting.

💬 Note from Doctor Luo: After catching the external illness, he called in doctors, and the treatment went wrong — the more they treated him, the worse he became, until the whole illness was ruined. The ancients called this a “huai zheng” (a ruinous case) — essentially, a medical accident. This case is a textbook ruinous case: the original illness was never cured, and a whole pile of new problems was added on top.

How bad was it: both sides of the lower back crippled, crying out all night in bed

How ruined? Both sides of his lower back were crippled: he was bent over, in terrible pain, unable to stand straight. Lying in bed, he cried out in pain all night long — note, it wasn’t that he ached continuously; it was that the pain raged through the entire night. That detail is crucial. Before coming to Doctor Yu Jiayan, a hundred treatments had failed, and he had nowhere else to turn.

💬 Note from Doctor Luo: Stop and ask yourself: why would the pain be worse specifically at night? Think that question through, and you understand half of this case. Doctor Yu Jiayan seized on exactly this detail from the start — pain caused by stagnant blood is heavier at night and lighter by day. A person who hurts all night long very often has stagnant blood inside.

Doctor Yu Jiayan takes the pulse: calm and even, and the pain had lessened — he said “this is not good news”

Doctor Yu Jiayan felt the pulse: calm, even, without trouble — quite normal. Then he looked at the pain: it had greatly decreased compared with before. Surely that was improvement? Doctor Yu Jiayan shook his head: This is not good news!

💬 Note from Doctor Luo: Here his reasoning runs completely opposite to what we ordinary people assume. We think that when the illness eases and the pain stops, that’s good; Doctor Yu Jiayan said: the fact that your body is still fighting back actually shows it has the strength to fight — that is the good sign. Take the most common example: fever. Some people never run a fever — when they get sick, they just go limp. Is never having a fever a good thing? Actually, a fever is precisely the body fighting back. Sometimes after you support the upright qi, the patient suddenly spikes a fever, and the family panics: “Did you use the wrong medicine? Why is the fever worse the more medicine we give?” — but in fact the upright qi has become strong enough to resist, and that is the good news. Pain works the same way: when the pain slowly fades, it often means the pathogenic qi has settled inside while the upright qi has given up the fight — evil and upright blend into one family, coexisting in peace, and the disease takes root and drags on for years. So not every retreat of symptoms is good news; you have to analyze each case on its own terms.

Doctor Yu Jiayan told the patient: This illness will not kill you — but I’m afraid you may be crippled for life. The whole turning point of the disease lay in the knife-stabbing pain: as long as you still feel pain, it means the upright qi and the pathogenic qi are still bravely battling each other (zheng xie xiang zheng). Now that the pain has greatly diminished, that is truly worrisome — we must treat this immediately.

On hearing this, the patient said in despair: “If my body is already ruined, what is the point of living? Better to die quickly!” — If my back is gone, what’s the use of staying alive? Please, do something — I’ve already lost the will to live.

💬 Note from Doctor Luo: The patient’s words are pitiful, but Doctor Yu Jiayan knew exactly what he was doing. He frowned and thought through the treatment for a long time — this was not a case where you just copy a ready-made formula; he genuinely racked his brains.

Diagnosis: heat burrowing deep into both sides of the lower back, blood vessels long blocked, stasis and heat intermingled

This is the disease mechanism Doctor Yu Jiayan worked out: the patient had caught cold damage, the pathogenic qi had already transformed into heat, and the heat had burrowed deep into both sides of the lower back; the blood vessels had been blocked for so long that they could no longer open again — the blood was stuck in the lumbar region, wanting to pass through but unable to.

💬 Note from Doctor Luo: The original pain meant the body’s qi and blood were trying to push through, straining with all their strength — the upright qi still had power, so the local pain was fierce. Now the upright qi is thoroughly exhausted; it no longer has the strength to push at all, and nothing can get through — hence the pain is gone. At this point attacking the pathogenic qi alone will not work — the upright qi is completely depleted, so an attack will meet no response, and the body cannot take it.

So what did he do? Doctor Yu Jiayan prescribed: Taoren Chengqi Tang (Peach Kernel Qi-Ordering Decoction), with generous additions of rou gui (cinnamon) and fu zi (aconite).

Anatomy of the prescription: Taoren Chengqi Tang — one masterful game of combining cold and heat

Here we need to talk properly about Taoren Chengqi Tang (also written Taohe Chengqi Tang, Peach Kernel Qi-Ordering Decoction) — a formula from the Shang Han Lun (Treatise on Cold Damage).

💬 Note from Doctor Luo: Discussing Doctor Yu Jiayan, strictly speaking, gives us a chance to get acquainted with the formulas of the Shang Han Lun. The Shang Han Lun is the clinical foundation of Chinese medicine — it contains the complete system of principle, method, formula, and medicinals. The vast majority of the ways doctors think about disease come from the Huang Di Nei Jing (Yellow Emperor’s Inner Classic) and the Shang Han Lun. The Inner Classic mainly teaches principles, but the entire book contains only thirteen formulas; the Shang Han Lun is full of formulas — if you want to know how to treat diseases concretely and how to decoct the herbs, you must study it.

What does Taohe Chengqi Tang treat? It treats blood amassment in the lower jiao (xia jiao xu xue zheng) — stagnant blood and heat binding together in the lower body. What are the signs? Shao fu ji jie (a lump and pain in the lower abdomen), xiao bian zi li (urination paradoxically free and easy — this is a key diagnostic point), a tendency to dry, bound stool, and mental/emotional disturbance (amassed blood can disturb the shen, the spirit).

The formula has four groups of herbs, each with its own job:

• Tao ren (peach kernel): disperses tangible stagnant blood, breaking up the clotted blood;
• Gui zhi (cinnamon twig): warm, moves and unblocks the blood vessels;
• Da huang (rhubarb) and mang xiao (Glauber’s salt): drain heat and purge downward — scattering the stasis and sending the bound heat out with the stool;
• Zhi gan cao (honey-fried licorice): harmonizes all the other herbs.

💬 Note from Doctor Luo: The greatest feature of this formula is that it combines cold and hot medicinals: da huang and mang xiao are bitter-cold, heat-draining herbs; gui zhi warms the yang and unblocks the vessels, so the body is not cooled down too much. And Doctor Yu Jiayan added rou gui and fu zi on top — even warmer. Why? Chinese medicine never treats the body as “either cold or hot” — if you learn it that way, you haven’t even entered the hall. The body very often has cold and heat at the same time: the pathogenic qi is hot, but the upright qi is severely deficient — perhaps even the kidney yang is insufficient, and the whole body is running at a low level with depressed function. In that situation you may clear heat, but you must simultaneously warm the yang, lifting the body’s function back up, and only then can the heat be cleared and the disease cured. Hence the principle of han re hu yong (using cold and heat together). Doctor Yu Jiayan said himself that he had used this approach before — for example, Fu Zi Xie Xin Tang (Aconite Heart-Draining Decoction), which pairs fu zi with huang lian (Coptis): supporting the upright qi on one side while draining the evil heat inside on the other.

The result: two large doses and he could stand up; pills finished the job in about ten days

Two large doses (the quantity was substantial) went down, and he could stand up with strength almost immediately — he could put force into his legs, stand up, and the back pain eased considerably. Then, using the same idea of the original formula, Doctor Yu Jiayan made it into pills; after taking them for more than ten days, the man recovered completely.

💬 Note from Doctor Luo: Doctor Yu Jiayan was very modest afterward. He said he had never treated this illness before, and this prescription was not meant to be handed down to teach the world — it was a temporary expedient (yi shi zhi quan yi), a measure improvised to match the patient’s condition at that moment. Regulate the qi above, treat the blood below; use tao ren (peach kernel) and rou gui (cinnamon) to work on the stagnant blood in the lower back — the logic is very clear.

Even more remarkable is the confirmation: later, Jiang Gusheng’s younger brother also caught cold damage, and both sides of his lower back became achingly painful in the same way. His family, without a second thought, simply used this same formula — and he too recovered in two doses. One idea, two families, two doses of medicine each: this was clearly not a blind cat catching a dead mouse.

Extension one: how many kinds of back pain are there? — cold-damp, kidney deficiency, stasis-and-heat

Using this case as a springboard, Doctor Luo Dalun walks through back pain from beginning to end. The back pain we meet in daily life roughly comes in these types:

Type one: invasion of cold-damp. You were caught in cold, overcast weather, blown by cold wind, or chilled at night while sleeping — use Zhang Zhongjing’s Shen Zhuo Tang (Kidney Retention Decoction, i.e. Gan Cao Gan Jiang Fu Ling Bai Zhu Tang), which warms the yang, strengthens the spleen, and drains dampness with herbs like bai zhu (Atractylodes) and gan jiang (dried ginger). After drinking it, wrap up warm and sweat slightly, and it resolves quickly.

Type two: kidney deficiency. Among these, kidney-yang deficiency is especially common: the classic pattern is pain that is unbearable in the early morning, just before dawn, while still lying in bed — the yang is trying to rise but cannot get going. Treat it by warming and tonifying kidney yang, for example with Shen Qi Wan (Kidney Qi Pill) and its variations — very effective. Kidney-yin deficiency also exists: mainly aching rather than sharp pain — a sour, aching low back, but not as intensely painful.

Type three: intermingled stasis and heat — the biggest group of all. After an external-contraction illness, heat remains in the body and gathers in the lumbar region, generating stagnant blood — stasis and heat intermingled. These people often have normal test results and yet their back just hurts; and among those who can be diagnosed with something, very many have chronic nephritis (chronic kidney inflammation).

💬 Note from Doctor Luo: For a long time, everyone assumed chronic nephritis was kidney deficiency and blindly tonified the kidney — and the result was chronic nephritis that never got better. I have seen large numbers of kidney patients who were tonified and tonified and never healed at all. Then Doctor Zhao Shaoqin — an elder of Beijing University of Chinese Medicine and a master of the warm-disease (wen bing) school — put forward the idea: damp-heat and stagnant blood intermingling in the lumbar region cause chronic nephritis, and it should be regulated with the cool-the-blood and move-the-blood approach. The results were excellent — kidney patients recovered. My own elderly mother once suffered kidney disease and was cold beyond belief — actually the damp-heat was blocking the movement of qi and blood, which is what made her body feel cold — and I used Doctor Zhao’s approach, cooling and moving the blood; gradually she was cured completely. My younger sister as well. Countless people have written to me after hearing this idea, saying their kidney disease greatly improved and their proteinuria disappeared. Doctor Zhao truly deserves to be remembered for a thousand years — in his lifetime he explained one disease clearly and cured it, and how many people have benefited!

Extension two: Doctor Zhao Shaoqin’s kidney-disease formula idea (idea only — don’t copy the prescription)

Doctor Zhao’s kidney formula is simple: fang feng (Saposhnikovia) and jing jie tan (charred schizonepeta) (to vent the pathogenic qi), chao huai hua (stir-fried pagoda tree flowers) and sheng di yu (garden burnet root) (to cool the blood), dan shen (salvia) and qian cao (madder root) (to move blood and resolve stasis), lu gen (reed rhizome) and bai mao gen (cogongrass rhizome) (to cool blood and disperse heat); whenever there is lumbar aching or pain, add sang zhi (mulberry twig) and si gua luo (loofah sponge) (to unblock the channels and collaterals), plus jiao san xian (stir-fried hawthorn, medicated leaven, and malt) to protect the spleen and stomach, and xuan fu hua (inula flower) to drain dampness. Once this approach is applied, stasis-and-heat lumbar aching and pain often clears up by the next morning — the effect is immediate.

💬 Note from Doctor Luo: I want to emphasize again — this is only the idea; don’t copy the formula. This is how Chinese medicine has been passed down, generation after generation: Zhang Zhongjing established the “drain heat + resolve stasis” approach for intermingled stasis and heat in the lower jiao; Doctor Yu Jiayan added warming-yang herbs on that foundation; Doctor Zhao Shaoqin used cooling-and-moving blood to cure kidney disease — one generation after another, conquering disease after disease.

What to take away: how to tell which kind of back pain you have

Finally, here are two simple ways to tell your back pain apart:

• When it hurts: pain that is heavier at night, raging through the night, is mostly stagnant blood (intermingled stasis and heat); pain that comes in the early morning, when the yang cannot get rising, is mostly kidney-yang deficiency — tonifying the kidney is correct there.
• Look at your tongue: yang deficiency — a pale, swollen tongue, white coating, lots of saliva; stasis and heat — a red or dark-red tongue.

💬 Note from Doctor Luo: Only when you use the diagnosis of Chinese medicine to identify the pattern and fix its nature does treatment become effective. In a case like Doctor Yu Jiayan’s, two doses of medicine basically finished the job; the patient who later used the same formula also recovered in two doses. My own feeling is this: genuine stagnant-blood back pain — especially with both stasis and heat — resolves as soon as you hit the pattern correctly; one or two doses and the back pain is gone immediately. So remember: back pain is truly not always kidney deficiency.

Compiled from the case record of Doctor Yu Jiayan as explained by Doctor Luo Dalun; the original case is from Yu Yi Cao (《寓意草》).