Fever for Nine Days, No Bowel Movement, Restless and Craving Ice Water? Doctor Luo Tianyi’s Cold-Heat Differentiation of Exogenous Yangming Fu-Excess (Tiaowei Chengqi Tang / Stomach-Regulating Qi-Coordinating Decoction)

Patient search words: fever / constipation / no bowel movement / three days without a bowel movement / restless and sleepless / craving cold water ｜ Medical terms: wai gan re bing (exogenous febrile disease) · shang han (cold damage) · yang ming fu shi (Yangming fu-excess) · yang zheng (yang pattern)

The opening scene: a roomful of doctors shouting at each other, and the family afraid to fill a single prescription

The Yuan dynasty. Jingjiang Prefecture. A crisis had broken out in the home of Li Jun, the ti xing guan (circuit judge) of the prefecture — his nineteen-year-old eldest son had fallen ill, and several physicians had been invited in. The result: the doctors started arguing right in front of the patient:

“This is a yin pattern! The yang qi is insufficient and cold has invaded — we must warm the yang!” “Nonsense — it’s obviously a yang pattern! A heat pattern — we must clear the heat!”

One said cold, the other said heat, quarreling endlessly. The father was completely stunned: You can’t even agree on whether it’s cold or heat — how could I dare give my son any of your medicines? Not one dose of any physician’s prescription was he willing to administer.

💬 Note from Doctor Luo: You see, distinguishing cold from heat and yin from yang is one of the great gates of Chinese medicine diagnosis — especially in the treatment of externally contracted disease. If you cannot tell cold from heat, and the general direction is wrong, this illness can never be cured. Why did I choose TCM diagnostics when I studied for my doctorate? It was because I gradually came to understand: diagnosis is like a railway switch. When the switch is thrown correctly, it does not matter whether the train runs fast or slow — it will reach the destination sooner or later. But if the switch is wrong, and you want to go to Beijing yet head south, then the faster the train runs, the farther it gets from where you want to go. So when diagnosis is wrong, it is the patient who suffers.

Who was the patient? A nineteen-year-old young man, nine days into a cold, getting worse with every treatment

First, how the illness began. That year, in the fourth month — the turn of spring into summer, when the weather alternates between sudden warmth and sudden chill — the young man caught shang han (cold damage, an exogenous disease), and by the ninth day he still had not recovered.

The first physician invited in analyzed: this is a yin pattern — yang qi insufficient, cold pathogen invading, and the cold damaging the spleen yang. So he prescribed Fuzi Lizhong Wan (Prepared Aconite Center-Regulating Pill) to warm the yang.

💬 Note from Doctor Luo: Fuzi Lizhong Wan is a classic formula for warming the yang and dispersing cold; for someone with spleen-stomach deficiency cold invaded by a cold pathogen, it is exactly right. But the question is — is this young man’s illness really a cold pattern? If the direction is wrong, then the more “on target” the medicine, the more harm it does.

And what happened? “After several doses, his condition grew worse” — after taking Fuzi Lizhong Wan several times, the illness did not improve; it got worse.

The second doctor said “clear the heat” — and the two camps started quarreling

The Li family hurriedly invited another physician. This one took one look: what yin pattern? This is obviously a yang pattern, a heat pattern — clear the heat!

So the two groups of physicians debated, each insisting on his own view. The patient was already burning with fever and miserable, and on top of that the room was filled with quarreling — anyone would collapse in that situation.

Doctor Luo Tianyi arrives: I won’t say who is right and who is wrong — I’ll lay out the reasoning clearly

With no other choice, Li Jun personally went to invite the imperial physician Doctor Luo Tianyi: “Please come and judge — who is right?”

Doctor Luo Tianyi was troubled the moment he heard this: this was a thankless job — whoever he declared wrong would lose face. He wanted to decline and stay out of it, but Li Jun knelt on the ground, kowtowed, and wept: “If the imperial physician will not come, my son can only wait for death!” How could he refuse after that?

Doctor Luo Tianyi had to go. When he entered the room, the physicians were still arguing. He did not want to directly declare who was right and who was wrong — instead, he would explain clearly, point by point, how to distinguish a yin pattern from a yang pattern. Once the reasoning was fully laid out, everyone could judge for himself.

Lesson one in distinguishing cold and heat: what does a yang (heat) pattern look like?

Doctor Luo Tianyi began his lecture. First, the yang pattern (heat pattern), with the key points laid out one by one:

• Shen da re er shou zu bu jue — the whole body is hot, but the hands and feet are warm, not ice-cold. This is the first key sign!
• Wo ze tan ran — lying relaxed, with the four limbs spread out, not curled up, looking perfectly at ease;
• Qi zuo you li — sitting up with strength — ask him to get up, and he is up at once, full of energy;
• Bu e han fan e re — not afraid of cold, but afraid of heat, restless and irritated by the heat;
• Bu ou bu xie — generally no vomiting and no diarrhea (and even if there is vomiting or diarrhea, it is the forceful, yellow-brown kind);
• Ke er yin shui — thirsty and drinking, wanting cold water, and feeling comfortable after drinking it;
• Fan zao bu de mian — restless and unable to sleep, lying in bed agitated, unable to settle, crying out and shouting in misery;
• Neng shi er duo yu — the appetite is still there, and he is talkative, and when the heat reaches an extreme, he even talks nonsense (delirium);
• Mai fu da er shu — the pulse is floating, large and rapid;
• Look at the tongue: the tongue body is red — the redder it is, the heavier the heat.

💬 Note from Doctor Luo: The most practical point here: when someone has a fever, first feel their hands and feet. People often ask me from other places: “My child has a fever — should I give heat-clearing medicine, or warming-and-dispersing-cold medicine?” First feel his hand — is it cold or warm? In a true heat pattern, the hands and feet are usually warm. But if the forehead is burning and the hands and feet are ice-cold, that is usually not a simple heat pattern — there is a blockage somewhere in the body, and it is often a matter of insufficient upright qi, insufficient yang qi. Just this one move can help you avoid a huge pitfall.

Lesson two in distinguishing cold and heat: what does a yin pattern look like? Hands, feet and tongue are all clues

Then the yin pattern (insufficient yang qi) — the exact opposite of the yang pattern:

• Shen bu re er shou zu jue leng — not obviously feverish (some people run a low fever), but the hands and feet are ice-cold;
• Afraid of cold, curled up and dozing — lying curled up, facing the wall, quiet and still;
• Bu xi ren sheng — dislikes the sound of people, the quieter the better;
• Zi yin yi gai fu — pulling clothes and blankets over himself, the more covering the better;
• Bu fan ke — not restless and not thirsty, and even if he drinks, he wants hot water;
• Bu yu shi — very poor appetite;
• Xiao bian zi li — urination is clear and copious, the color not yellow;
• Da bian fan kuai — loose stools, and any diarrhea is thin and watery;
• Mai chen xi er wei — the pulse is deep, thin and weak, possibly somewhat slow;
• Look at the tongue: the tongue body is pale, the tongue plump and swollen, often with teeth marks along the edges, and the surface is watery and slippery with much saliva.

💬 Note from Doctor Luo: Tongue diagnosis is extremely rich in information and especially good for telling cold from heat. If the tongue is plump, pale in color, watery on the surface, even with teeth marks — this is often a yin pattern, and the direction of warming the yang is certainly right. What if a thick coating covers the tongue and you cannot see the tongue body? Ask the patient to curl the tongue up and look at the underside and the edges — you can still see it. As for exactly how to warm the yang in a yin pattern, and when warming is called for, you can look at the books of the Fire Spirit School (huo shen pai) physicians — they specialize in warming the yang and have summed up many diagnostic points for judging “now it is time to warm the yang.” It is well worth studying.

An interlude: Doctor Li Dongyuan once treated a child whose face burned bright red — a cold pattern in disguise

At this point in the lecture, Doctor Luo Tianyi brought up a case that his teacher Doctor Li Dongyuan had treated:

A child caught an exogenous disease — fever, red eyes, red face. Everyone said: a heat pattern, clear the heat at once!

Doctor Li Dongyuan took one look: this is no heat pattern — this is cold! The child’s interior was already extremely cold. This is xu yang wai yue — deficient yang floating outward: the yang qi was about to lose its hold and had floated to the surface, which is why the face looked red. He immediately had people prepare a decoction of ganjiang (dried ginger) and fuzi (prepared aconite).

Before the medicine was even done decocting, the child’s hands began to change — the tips of the fingernails turned gradually blue, and the cold signs showed themselves unmistakably! When the decoction was ready and poured down, the child recovered immediately.

💬 Note from Doctor Luo: Why did all the earlier doctors get it wrong? Because when people fall ill, there are far too many false appearances — cold and heat are extremely easy to misjudge. This is precisely the great gate that tests a physician — no one dares boast that they have never met symptoms so tangled that they could not be sorted out. Those with real skill can quickly see the true condition through the false appearances, write a prescription, and the person is cured. Those fooled by false appearances find their medicine has no effect at all. The earlier physician’s Fuzi Lizhong Wan, which made the patient worse with each dose, was exactly a case of tripping over false appearances.

Doctor Luo Tianyi takes the pulse: deep and rapid, crying out every night, craving ice water, no bowel movement for three days

After finishing the lecture, Doctor Luo Tianyi finally examined the patient properly. He took the pulse: mai chen shu, yi xi liu qi zhi — deep and rapid, six or seven beats to a single breath — hidden deep, racing fast.

Then he asked about the illness, and the child’s mother said: ye lai jiao hu bu jue — he cried out and shouted all night, barely sleeping at all; and he constantly wants ice water — only something cold makes him comfortable.

💬 Note from Doctor Luo: Hearing “crying out ceaselessly” and “craving ice water,” Doctor Luo Tianyi already understood — the shouting and agitation, the craving for cold drinks, are all signs of heat in the interior, exactly the opposite of the first physician’s “yin pattern.” He asked one more question: he has already gone three days without a bowel movement. Now the pattern was complete — this is the Yangming fu-excess pattern: exogenous heat pathogen enters the interior, heat binds in the large intestine, dry stool blocks the way, and the fever burns the patient into restless agitation.

Doctor Luo Tianyi judged: there is heat in the interior and the bowels are blocked, and the heat pathogen is further consuming the jin-ye (body fluids) — the fluids were already badly damaged. What to do now? — ji xia cun yin: urgently purge the heat binding and preserve the fluids! So ji yi xia zhi — the urgent course was to purge.

The prescription: rhubarb six qian, honey-fried licorice two qian, mirabilite two qian — the Chengqi Decoction approach

The formula was very simple:

Da huang (rhubarb) 6 qian, zhi gancao (honey-fried licorice) 2 qian, mang xiao (mirabilite) 2 qian, decocted in water and taken. (1 qian ≈ 3 g — here roughly 18 g, 6 g and 6 g.)

💬 Note from Doctor Luo: Look at this — it is the approach of Zhang Zhongjing’s Tiaowei Chengqi Tang (Stomach-Regulating Qi-Coordinating Decoction): da huang drains heat and unblocks the bowels, sweeping the stomach and intestines clean; mang xiao softens hardness and moistens dryness, assisting da huang in the purge; and one dose of zhi gancao protects the stomach qi — purging without injuring. Once the heat binding is gone, the fluids are naturally preserved — that is the meaning of “urgently purge to preserve yin.” Purging is not the goal; the goal is to remove the heat pathogen, this “source of fire,” so that the fluids are no longer consumed — only then can the illness heal.

The result: more than twenty lumps of dry stool passed, heavy sweating at night, and the next day a cool body and a calm pulse

After taking the medicine, by evening the bowels moved — more than twenty lumps of dry stool came out; everything that had been blocked for three days came down.

Right after that, he sweated heavily during the night.

💬 Note from Doctor Luo: That sweat was absolutely critical. Once the heat binding was purged, qi and blood flowed freely again, fluids could be distributed normally, and when the sweat came out, the pathogen was resolved along with it — in exogenous disease, seeing “sweating” is often the signal that recovery has begun.

The next day, Doctor Luo Tianyi personally called again to check on him — he was extremely conscientious in his practice. He looked: shen liang mai jing — the body was cool and the pulse was calm; the temperature had dropped, and the pulse was peaceful. The illness was cured.

💬 Note from Doctor Luo: When the ancient texts write “the body cool and the pulse calm,” that is essentially the standard phrasing for recovery from an exogenous febrile disease. This case looks simple — cold and heat distinguished, one dose, immediate effect. But the earlier physicians had the direction wrong, and the more they treated, the worse it got. Once cold and heat are clearly distinguished, exogenous disease truly heals fast. It looks simple — but the skill inside runs deep.

What to take away: distinguishing cold and heat is the first gate in treating exogenous disease

At the end of the case record, Doctor Luo Tianyi wrote a reflection: one should read the classics such as the Huangdi Neijing (Yellow Emperor’s Inner Canon) and the Shanghan Lun (Treatise on Cold Damage) — the Shanghan Lun explains with perfect clarity how the six-channel exogenous diseases transmit and how to regulate them, and everyone should study it well. If you do not study the classics and treat disease with your eyes closed, unable even to tell cold from heat — then great disasters will follow.

💬 Note from Doctor Luo: Doctor Luo Tianyi’s words carry extraordinary weight today. In treating exogenous disease, one must always hold two scales: supporting the upright and dispelling the pathogen, warming the yang and clearing the heat. Sometimes the pathogen is at its height, and you must help the body drive it out. Sometimes the body’s upright qi is insufficient, and clearing alone cannot move the pathogen — at such times, supporting the upright is dispelling the pathogen: once the upright qi is lifted, the pathogen is gradually pushed out. And sometimes the body fights the pathogen so violently that it wounds itself, and you must use cooling methods and ways of guiding the pathogen outward. If you cannot tell these apart, exogenous disease cannot be cured. Plague is right beside us now; internationally there are still more than two hundred thousand new cases every day — in plague treatment, distinguishing cold from heat and yin from yang is a skill you must master. If this skill is not mastered, the disease is truly hard to treat.

Case source: Weisheng Baojian (Precious Mirror of Hygiene), medical case of Doctor Luo Tianyi (case title: distinguishing cold and heat in the treatment of exogenous cold damage); commentary based on public lectures by Doctor Luo Dalun (PhD in TCM diagnostics, Beijing University of Chinese Medicine).