Sweating at the Slightest Movement, Upper-Body Sweats, or Drenching Sweats? Doctor Zhang Xichun’s Modified Shengxian Decoction (Lift the Sinking) for Sinking of Great Qi That Causes Sweating

Search terms this page answers: sweat as soon as I move / drenching sweats / upper-body sweating / sweating in my sleep / sweating like a bath / sweating a lot during the day / sweating at night / feeling weak and always sweating

Medical terms: spontaneous sweating (zi han) · night sweats (dao han) · sinking of great qi (da qi xia xian) · sweating disorder (han zheng)

Opening: sweating — day sweat and night sweat tell two very different stories

Why do people sweat? In this chapter, Doctor Zhang Xichun takes the subject of “sweating” apart and explains it thoroughly. First, remember two basic concepts:

Sweating at night — if you sweat while you sleep, especially waking up drenched in sweat, that is night sweats (dao han), and it mostly points to yin deficiency. But Doctor Luo Dalun adds an important reminder: it is not always yin deficiency — qi deficiency can also cause night sweats.

Sweating during the day — if you sweat with the slightest movement, that is spontaneous sweating (zi han), and it mostly points to qi deficiency. These are the two basic categories.

💬 Note from Doctor Luo: There is one special situation: suddenly pouring out an enormous amount of sweat all at once. That is usually a danger signal. For example, what modern medicine calls a sudden electrolyte imbalance, or a sudden drop in blood sugar, can both produce that “a whole body of sweat in an instant” — hands trembling too. But a hypoglycemic attack comes on fast and does not last that long — if blood sugar keeps falling, a person’s life is at risk. So sudden drenching sweat must never be taken lightly.

Case one: a 47-year-old man who sweated as if he had just taken a bath

First, an urgent case. The patient was 47 years old — just past middle age, at the tail end of it. Two keywords sum up his symptoms: cough with shortness of breath, and then sweating like a bath — what does that mean? The sweat poured out as if he had bathed, soaking him head to toe, without stopping. And it continued day and night — the sweat poured out relentlessly, night and day. On top of that, he felt palpitations (xin zhong zheng chong) — a hollow, fluttering, panicked feeling in his chest, as if his heart were racing out of control.

💬 Note from Doctor Luo: The moment I hear the words “short of breath” (duan qi), the alarm bell for sinking of great qi goes off in my mind — it does not mean I make the diagnosis immediately; I still weigh it against the other symptoms. But the alarm must light up first. And this kind of drenching sweat is a critical symptom: profuse sweating most easily produces the sweat carrying the qi away with it (qi sui han tuo) — the upright qi can scatter quickly.

At the critical moment, Doctor Zhang Xichun’s trump card: shan yu rou, 2 liang

The condition was critical, so Doctor Zhang Xichun was called in urgently. He saw that the sweating was far too severe, and immediately reached for his special move — shan yu rou (cornus fruit, shan zhu yu).

💬 Note from Doctor Luo: Here is a crucial detail: the pit of the shan yu rou must be removed. Doctor Zhang Xichun believed the pit and the flesh have opposite medicinal natures. The flesh’s job is to gather and secure the primal qi — this is one of Doctor Zhang Xichun’s core methods. That is why later generations of old-style physicians, such as Doctor Li Ke, often followed Doctor Zhang Xichun when treating critical illnesses, adding large amounts of shan yu rou to their formulas. Shan yu rou nourishes the yin of the liver and kidney while simultaneously gathering and securing the primal qi — especially when a person is at the point of crisis, sweating profusely, with the upright qi about to slip away, its sour, astringent power holds the primal qi together. The dose must be large — here Doctor Zhang Xichun used 2 liang, which is 60 grams, decocted into a drink. Two liang of shan yu rou — that water must have been very sour.

After he drank the shan yu rou decoction, Doctor Zhang Xichun went back to see him the next day. Taking the pulse: the pulse was so weak it almost was not there — extremely feeble. Breathing was still somewhat strained — the qi still did not feel sufficient. But the patient himself said: the great drenching sweat had stopped — it had truly worked; he only sweated occasionally now. The hollow, panicked feeling in his chest had eased, though he still felt short of breath.

Doctor Zhang Xichun’s judgment: this is sinking of great qi

A pulse weak almost to the point of vanishing, plus shortness of breath — Doctor Zhang Xichun’s diagnosis: sinking of great qi (da qi xia xian). What to do? Use Shengxian Tang (Lift the Sinking Decoction). Because the man was still sweating, he added long gu (dragon bone) and mu li (oyster shell), 5 qian (15 g) each — dragon bone and oyster shell have the power to gather and stop sweat.

Three doses, and he was cured.

💬 Note from Doctor Luo: When great qi sinks, the qi in the chest is insufficient, and this produces symptoms of extreme weakness. As the upright qi scatters, you get drenching sweats like a bath. This kind of sweat must be secured and gathered on one side, while Shengxian Tang tonifies the qi on the other — returning the great qi to its place, restoring heart and lung function, and the body recovers on its own. This is the first kind of sweat — the drenching, bath-like sweat — and it is almost always a critical situation. A healthy person does not suddenly pour sweat for no reason; when you see it, you must be alert.

Case two: a young woman in her twenties who sweated with any movement

The second case is a woman in her twenties — very young. Her symptoms: spontaneous sweating on slight exertion — she moves a little, everyone else is dry, and her forehead is already covered in sweat; then fullness and oppression in the chest and flanks; and palpitations — a racing, restless heart.

The pulse: deep, slow, and weak, especially at the right positions. There is a refinement here — “slow” (chi) means the pulse beats a bit slowly. A slow pulse usually indicates what? Cold: either yang qi is insufficient, or external cold is present, and the pulse slows down. So Doctor Zhang Xichun wondered: is this yang deficiency of the heart and lungs?

So he asked the patient: do you always feel a little cold? The patient said: no, I don’t feel cold.

💬 Note from Doctor Luo: This exchange — one question, one answer — is the key to the whole differentiation. If she truly felt cold, it would be yang deficiency of the heart and lungs. Since she did not feel cold, it is not cold — it is sinking of great qi: when the heart and lungs are deficient to a certain degree, they lack the strength to drive the pulse, so the pulse can also be slow. Doctor Zhang Xichun therefore concluded: this is sinking of great qi. Then why the fullness and oppression in the chest? It is not true qi stagnation, not a blockage — it is shortness of breath: there simply is not enough qi; breathing is difficult, and ordinary people describe that as “fullness and stuffiness.” And the palpitations? With great qi sunk and heart-lung function weakened, the heart naturally gives trouble. Why does she sweat with any movement? Qi deficiency produces spontaneous sweating — the qi drives the qi of the channels through the body, and the defensive qi (wei qi) protects the surface; both can run normally only when the chest’s upright qi is sufficient. When great qi is insufficient and sinks, the wei qi protecting the body surface weakens, it loses command and can no longer hold things in — so the sweat comes out. Therefore people with qi deficiency sweat spontaneously, and such a person is certainly qi-deficient.

A masterstroke: a packet of astragalus sitting right in the house

These symptoms were all manifestations of sinking of great qi and qi deficiency. How to treat it? Doctor Zhang Xichun was just about to write a prescription when he noticed — the family happened to have bought a packet of herbal medicine: huang qi (astragalus). It was sitting right there.

Doctor Zhang Xichun saw it and said: that’s all we need. Because she sweats spontaneously, I will leave out sheng ma (bugbane) and chai hu (bupleurum) for now — why? They lift upward, and for a person who sweats a lot, they can make the sweating worse. The earlier formula used shan yu rou to secure the sweat; no need for that either. Decoct sheng huang qi (raw astragalus) 1 liang (30 g) and drink it — of all the herbs in Shengxian Tang, use only this single astragalus.

The result: she drank it, and all her symptoms resolved — every one of them was gone.

💬 Note from Doctor Luo: Doctor Zhang Xichun was like a martial-arts master — he picked up whatever was at hand and it worked perfectly. There happened to be a Doctor Dong sitting in on the consultation, and he was very curious. He asked: huang qi governs great wind and has the power to reach the exterior; it protects the body surface and has a certain outward-dispelling force — especially raw astragalus, whose surface-reaching power is even stronger, and its tonifying strength is considerable. This woman has fullness and oppression in the chest — would 1 liang of raw astragalus not make the fullness worse? How is it that both her spontaneous sweating and her chest fullness were cured at once? Doctor Zhang Xichun explained to him: when it is said that astragalus has strong surface-reaching power, that refers to the situation when qi deficiency prevents the body from pushing out an external pathogen — in a formula that releases the exterior, a little astragalus helps push the pathogen out, which is why it can promote sweating. If a person with strong yang and deficient yin, or with heat, mistakenly takes astragalus, they can pour sweat like rain — even more sweat. But if the great qi of the chest has sunk, so the defensive qi fails to secure the surface and loses command of the body’s fluids, then in this kind of sweating — tonifying the qi actually stops the sweat. And the chest fullness was false — it was really shortness of breath; the qi truly was not enough. With astragalus, the great qi returned to its post, the fullness dissolved, and the palpitations settled too. Doctor Dong was overjoyed: “You are truly my teacher — Master, you really are my teacher!”

Doctor Zhang Xichun then added jie geng (platycodon) 2 qian (6 g) (to lift things upward a bit more) and zhi mu (anemarrhena) 3 qian (9 g) (to clear heat), and she took two more doses to consolidate the recovery.

A single astragalus, now a best-selling patent medicine

💬 Note from Doctor Luo: This method of using astragalus alone is still used today — there is a patent medicine called Huang Qi Granules, made from this single herb, and it sells extremely well across the country. Even many Western-medicine doctors prescribe it. Why? Because it works. Some Western-trained doctors have noticed that among hypertension patients, those with high diastolic pressure (the “low number”) respond especially well to Huang Qi Granules — because this type is caused by insufficient upright qi, insufficient qi in the chest. (Though in the future Western-style physicians may be barred from prescribing Chinese patent medicines, this still shows that the underlying principle is shared.) If you truly meet this kind of qi-deficient person, taking a little Huang Qi Granules can also help. If there is heat, Doctor Zhang Xichun would pair it with zhi mu as he did later — matching it with heat-clearing and yin-nourishing herbs is even better.

Case three: her legs were useless, but the sweat poured from her upper body

The third kind of sweating is even more distinctive. A woman in her thirties had developed a wasting disorder (wei zheng) — her lower limbs were weak, both legs useless, resembling paralysis or some form of muscle weakness; she could not bend or straighten her legs, and was basically immobile. Yet her upper body sweated constantly — with the slightest movement, her upper body was soaked. She also had shortness of breath in the chest, a bearing-down sensation in the lower abdomen, difficulty urinating, and insomnia (qin bu neng mei — she could not sleep at night).

The illness was complicated. Doctors were called, and far from improving, she only grew worse. Out of options, they called in Doctor Zhang Xichun. Taking the pulse: fine as a silk thread (xi ru si) — thin as a silk filament, especially at the right positions. Doctor Zhang Xichun immediately judged: sinking of great qi.

💬 Note from Doctor Luo: At this point the family began to doubt: this “sinking of great qi” talk — none of the previous doctors ever mentioned it; why does only you bring it up? It is just like what I do now — I talk about sinking of great qi every day, but go ask Chinese-medicine practitioners and you will find they do not really know it well. They have all heard of it, yet in actual treatment it is not prescribed very often. Doctor Zhang Xichun explained: although this great qi lives in the chest, it governs and unifies the whole body — it manages the qi of the entire body. Now that the great qi has dropped downward, it is as if the leader of the qi has left his post: the qi of the entire body weakens — with no one in command, the limbs can become partially disabled. That is why people with sinking of great qi are so often weak in the four limbs, without strength. This woman was a severe case — both legs without strength, her legs useless.

Why exactly the upper body?

So why does she sweat from the upper body? Doctor Zhang Xichun explains: once great qi sinks, the defensive qi also becomes deficient — the qi at the body surface is weak, so the person sweats continuously. The distinguishing feature is the upper body sweating constantly: after great qi drops downward, the upper body is left empty, so with the slightest movement, the upper body’s sweat pours out.

💬 Note from Doctor Luo: Remember this: upper-body sweating mostly comes down to two situations. The first: blockage in the middle burner — the spleen and stomach are blocked, from eating rich foods day after day; damp-heat accumulates inside, and the upper body sweats easily, especially at meals — you eat, and the sweat of the upper half pours out, and the sweat is sticky. This is the excess pattern (shi zheng): it must be treated by clearing heat and opening the middle burner. The second: sinking of great qi — the qi has moved downward, the upper burner is empty, the qi can no longer govern the fluids, and the sweat comes out. This is the deficiency pattern (xu zheng). One deficiency, one excess — those are the only two roads. Why the insomnia? After great qi sinks, the spirit and soul have nowhere to rest — the heart governs the spirit (shen); when the great qi sinks, the spirit loses its support and insomnia begins. Why difficulty urinating? The qi transformation of the triple burner is impaired — it can neither ascend nor descend, so the lower burner fails to move the urine. Why the bearing-down feeling in the lower abdomen? The qi of the chest is moving downward, so the lower abdomen is dragged down. Every one of these is a symptom of sinking of great qi.

Shengxian Tang plus dragon bone and oyster shell: two doses, sweat stopped, legs moved

Doctor Zhang Xichun treated her with Shengxian Tang (Lift the Sinking Decoction). Because she sweated so much, he added long gu and mu li, 5 qian (15 g) each, both raw — to secure the sweat.

After two doses, the sweating stopped, her legs could bend and straighten a little, and all the symptoms eased markedly.

Next, Doctor Zhang Xichun prescribed Li Yu Shengxian Tang (Regulate the Stagnation and Lift the Sinking Decoction — the Shengxian formula plus herbs that move the qi and resolve stagnation; this will be covered in its own chapter later). With the stagnation-regulating herbs added, her two legs gradually began to bear weight — strength was returning.

💬 Note from Doctor Luo: Doctor Zhang Xichun said that her legs had been wasted for too long. When a disease has persisted this long, the disease sits in the channels and sinews (jing mai) — it cannot be cured in a day or two, unlike other illnesses that resolve as soon as they are treated. This one had to be regulated slowly, so he prepared some soothing-sinew, freeing-vessel herbs, made them into pills, and told her to take them slowly over time — in the end it would surely heal. Doctor Zhang did not record this case through to its conclusion, but the big problems had already been solved; what remained was guidance and slow, steady regulation.

Bonus: Doctor Luo’s own aunt — sweating only from the legs

💬 Note from Doctor Luo: While we are on the subject — sweat comes in all sorts of patterns: some people sweat on the left half versus the right half, some on the upper half versus the lower half. I have seen a case of sweating only from the lower half of the body — my own aunt. At night, while sleeping, her two legs would sweat as if she had taken a bath, while her upper body stayed completely dry. In the end I treated her by invigorating the blood and resolving stasis — hers was blood stasis. So sweating is not always deficiency: you have to look at the location, the accompanying symptoms, and differentiate carefully.

Conclusion: the sweat of sinking great qi, in three grades

In Doctor Zhang Xichun’s sinking-of-great-qi cases, sweating is a very common symptom — most often torrential sweating, sweat pouring out in huge amounts. Doctor Luo Dalun summarizes the sweating caused by sinking of great qi into three grades:

• Grade one (mild): spontaneous sweating at the slightest movement — the person sweats easily and often.
• Grade two (moderate): half-body sweating — this shows the qi mechanism has begun to move unevenly; upper and lower are no longer in harmony. With great qi sunk, the upper part is empty, and sweat escapes easily.
• Grade three (most severe): drenching, bath-like sweats — sweating enormous amounts, as if one had just bathed: this indicates severely deficient qi, and the sinking of great qi has already caused whole-body imbalance.

💬 Note from Doctor Luo: So when you meet someone whose whole body suddenly pours sweat in great quantities, think: has the sinking of great qi already become very serious? I do not mind repeating myself — I will keep explaining this problem, and explaining it in detail. A school lecture may not go this deep, but in my own media I can say whatever I like. In the past people did not take sinking of great qi seriously, and I think that was a mistake — it is actually extremely useful: at some point in your life you may well run into it. The moment even a slight symptom appears, if you recognize it and lift the qi back up, the body will not fall into danger. It does us good to learn it.

Compiled from Doctor Luo Dalun’s explanations of Doctor Zhang Xichun’s case records; the cases come from Records of Chinese Medicine with Western Reference (《医学衷中参西录》).