Cold Hands and Chills but Actually Phlegm-Heat? Doctor Wang Mengying’s Case of Wind-Dampness Turned into Phlegm-Heat by a Mistaken Warming Treatment

Patient search terms: cold hands and feet / feeling cold / spitting saliva / muddled head / drowsy and groggy / excess phlegm / thick greasy tongue coating / strange illness

Medical terms for this condition: phlegm-heat pattern · wind-damp turned into heat · heat scorching fluids into phlegm (shuo ye cheng tan) · stagnant qi movement (looks cold, but is actually hot)

Opening: that same Doctor Chen Liushun, the doctor who made patients worse

Today we continue the story of how Doctor Wang Mengying (王孟英) treated his patients. Last time we talked about how his close friend Zhou Guangyuan was on the verge of losing his yang and was rescued with dried ginger. Today’s story also involves a doctor — the very same Doctor Chen Liushun who had a habit of making his patients worse.

💬 Note from Doctor Luo: Doctor Wang Mengying was one of the four great masters of febrile disease (wen bing) in the Qing dynasty, and he excelled at treating warm-pathogen illnesses. The famous Yu Ling Gao (Jade Spirit Paste) is his creation. His case book, Hui Chun Lu (《回春录》, “Returning to Spring”, also known as Wang’s Case Records, 《王氏医案》), is a record of his real clinical practice. The Mr. Shi we meet today was nearly ruined by Doctor Chen Liushun, and was finally rescued by Doctor Wang Mengying.

Who was the patient? Mr. Shi from Sichuan, who fell ill passing through Hangzhou

In the spring of the bingshen year (1836), a gentleman from Sichuan named Shi Fusheng received an invitation. A friend of his, Deng Sima, had gained an official post and, thinking of old friends, wanted Shi Fusheng to come and serve as his private secretary. Shi Fusheng set out for his new post and passed through Hangzhou — and there, in Hangzhou, he fell ill.

💬 Note from Doctor Luo: When you’re ill, you find a doctor. The inn where he was staying happened to be the former residence of Mr. Zhang Liuyin — the very gentleman we met in earlier stories, whose house this had once been. Right next to the inn there was a clinic, and the doctor in residence was Doctor Chen Liushun. This same Chen Liushun was the one who had previously treated one of Mr. Zhang Liuyin’s relatives badly, and who had then been rescued by Doctor Wang Mengying. Shi Fusheng knew nothing of this. He saw a clinic nearby and called in Chen Liushun. And what happened? He was treated badly again — the illness only grew worse.

One sentence from the innkeeper made him change doctors in a hurry

The innkeeper asked what was going on, understood the situation, and told Shi Fusheng the whole story of what had happened at Mr. Zhang Liuyin’s house.

💬 Note from Doctor Luo: Shi Fusheng was horrified: “Oh heavens — I almost followed in that gentleman’s footsteps!” He immediately sent someone to fetch Doctor Wang Mengying.

Doctor Wang Mengying felt the pulse: this illness looks cold, but hides a big trap

Doctor Wang Mengying arrived and took the pulse: chen er se (沉而涩) — the pulse was sunken, and se (涩) means rough, uneven, not flowing smoothly. What’s more, it was so disordered that the beats could not be counted — the pulse was jumping chaotically, and you couldn’t even tell how many beats came with each breath.

Then he looked at the symptoms: limbs cool but not truly icy (zhi liang wei leng) — the arms and legs were cool and the patient felt cold; saliva and foam rising up (xian mo shang yong) — saliva kept welling up from the mouth and throat; scanty urine and stool (er bian se shao) — little urine, little stool; unclear spirit (shen qi bu shuang) — his vitality was flagging; drowsy and foggy (hun kui) — his head was muddled, groggy and unclear.

💬 Note from Doctor Luo: Everyone looking at this would think: cool limbs, feeling cold — this is a cold pattern! That’s probably what Doctor Chen Liushun thought too, following the warming-and-yang school: the patient feels cold, so you warm the yang. And the more he warmed, the worse it got. By this point the pulse was so chaotic you couldn’t even count the beats. What to do? There’s a big trap hidden here — watch carefully how Doctor Wang Mengying read it.

Doctor Wang Mengying’s verdict: not cold — “heat scorched the fluids into phlegm,” and the heat is trapped inside

As soon as he finished feeling the pulse, Doctor Wang Mengying said: “This man contracted wind-damp pathogen and never properly dispersed it.” He had caught external wind and dampness, and at the time he should have been treated by releasing the exterior — herbs that push wind and dampness out through the surface of the body. That would have settled everything. But the treatment was mishandled.

💬 Note from Doctor Luo: When an external pathogen first enters, it arrives carrying cold. Once inside, the body fights it, and the illness turns to heat — it transforms into a hot state. At that point Doctor Chen Liushun came along and gave warming tonics! There was already some heat; warming and tonifying made it worse. The qi became blocked inside and could not flow; the pathogenic heat had no way out. And that inevitably produces four characters: shuo ye cheng tan (烁液成痰) — the heat scorches the body fluids into phlegm.

Shuo ye cheng tan — this phrase is especially important; it is the very root of the illness. The body contains fluids (jin ye). When heat bakes them, the fluids and dampness are cooked into phlegm; the phlegm travels upward against the normal flow and lodges in the chest and diaphragm, and the person goes downhill. This is what is called a phlegm-heat pattern (tan re zhi zheng).

💬 Note from Doctor Luo: Everyone should remember this: Doctor Wang Mengying was exceptionally skilled at treating phlegm-heat patterns — this is one of the most important lessons of studying Wang Mengying. He said that for illnesses like this, if you simply free the movement of qi — open up the qi mechanism — the phlegm dissolves, and the heat comes down with it: when phlegm moves, heat descends, and the illness is cured.

Breaking down the prescription: clear heat as the base, open the lung qi, resolve phlegm-heat, and give the heat an exit

How did Doctor Wang Mengying treat him? He led with huang lian (coptis) and huang qin (baical skullcap root) — heat-clearing herbs. There is heat pathogen, so clear the heat first. Then came his phlegm-resolving strategy, one herb at a time:

• Zhi shi (immature bitter orange) — breaks up stagnant qi, dissolves accumulations, disperses phlegm clumps; the phlegm-resolving begins;
• Ju pi (tangerine peel, chen pi) — resolves phlegm;
• Zhi zi (gardenia fruit) — opens the movement of the san jiao (triple burner) and clears heat at the same time;
• Dan dou chi (fermented soybean) — releases stagnant heat. This patient had originally caught an external pathogen; the body surface was bound up and there was pent-up heat inside, so the fermented soybean was used to let that heat escape;
• Jie geng (platycodon root) — regulates lung qi. The old saying calls it “the herb that carries the other medicines upward”; in practice it opens the passage of the upper burner — every method of resolving phlegm is, at its core, a way of opening a passage;
• Xing ren (apricot kernel) and bei mu (fritillaria bulb) — both resolve phlegm, and phlegm resolution is concentrated in the lungs. For bei mu, the ordinary zhe bei (Thunberg fritillaria) variety is enough; chuan bei is rarely necessary;
• Yu jin (turmeric root tuber) — regulates qi;
• Tong cao (rice-paper pith) — promotes free flow, guiding heat out through the urine;
• Zi wan (aster root) — moistens the lungs and stops cough; this is the purple flower, and it blooms beautifully;
• Zhu ru (bamboo shavings) — resolves phlegm-heat;
• Lai fu zhi — that is, radish juice, excellent for directing qi downward, dissolving accumulations, and resolving phlegm.

💬 Note from Doctor Luo: Do you see it? The logic of this prescription is very clear: clear the heat, then open the lung qi, regulate the qi, and add phlegm-heat-resolving herbs. Doctor Wang Mengying loved using radish — this is his dietary therapy thinking. Sometimes he made a soup of jellyfish with water chestnut, sometimes jellyfish with radish — all for resolving phlegm-heat. This is the famous Xue Geng Tang (Snow Soup, jellyfish and water chestnut) — Wang Mengying’s signature move for phlegm-heat. It wasn’t used in this case, but we will discuss it in detail later. With so many phlegm-heat-resolving methods combined, ordinary phlegm-heat has no chance of surviving.

Three doses and he was on his feet! The medicine worked, and about ten days of aftercare finished the cure

How did it work? San fu er qi — “he rose after three doses.” Three doses meant he was up and about! (In the old texts, “three tie” or “three ji” all mean the same thing: three doses.) Then he continued with aftercare, and in about ten days the illness was completely cured — the phlegm-heat was thoroughly cleared.

💬 Note from Doctor Luo: From this case we see that Doctor Wang Mengying made the diagnosis accurately, took no detours, and moved swiftly and decisively. Three doses and the patient was basically fine; then ten or so days of gentle aftercare, and a complete recovery. This way of thinking deserves careful study.

Doctor Luo’s classroom: what exactly is “phlegm” (tan) in Chinese medicine?

After finishing this case, Doctor Luo Dalun paused to explain “phlegm” properly — because the real theme of this article is: what exactly is phlegm in Chinese medicine?

Visible phlegm and invisible phlegm

What is phlegm? It is the thick, sticky fluids of the body. It comes in two kinds:

💬 Note from Doctor Luo: Visible phlegm is what you cough up day after day — the phlegm you can see. But the body also holds a great deal of invisible phlegm — that thick, sticky fluid hiding inside the body. And let’s distinguish phlegm from dampness: dampness (shi) is the watery, fluid-like pathogen — dispersed, pervading everywhere. Phlegm (tan) is dampness that has congealed. Between the two there is one more layer called yin (饮, retained fluid) — when water condenses a little more it becomes yin, and when yin condenses further, it becomes phlegm.

Strange illnesses often belong to phlegm

Phlegm can cause a great many illnesses. Chinese medicine has an old saying: guai bing duo shu yu tan — “strange illnesses often belong to phlegm.”

💬 Note from Doctor Luo: Similar sayings exist: “all strange illnesses belong to phlegm,” “strange illnesses are mostly born of phlegm turbidity.” What does this mean? Frequently there are strange illnesses that simply will not respond to conventional treatment no matter what you try — and at that point you should ask: could this be phlegm? Some doctors even formed a whole school devoted to resolving phlegm; patients came to them with strange illnesses, the doctor saw phlegm signs, resolved the phlegm first — and the illness was cured.

Where does phlegm come from? Disharmony of the lung, spleen and kidney

How is phlegm produced? When the lung, spleen, kidney and other organs lose their normal function, and external pathogens or heat scorch the body, the fluids can no longer be properly transported and transformed; they pool and stagnate, and slowly congeal into phlegm.

💬 Note from Doctor Luo: Chinese medicine says “the lung is the vessel that stores phlegm” — once phlegm is generated, it is stored in the lungs; “the spleen is the source that generates phlegm” — when the spleen lacks the strength to transport and transform water and fluids, they congeal and generate phlegm; and “the kidney is the root of phlegm generation” — why is the spleen qi insufficient in the first place? Because the kidney yang is weak and kidney qi declines. The kidney governs water; when kidney qi weakens, the water overflows and problems arise. So Chinese medicine explains the root of phlegm very clearly.

The symptoms of phlegm: from head to toe, causing trouble everywhere

The symptoms of phlegm are the most complicated and the hardest to tell apart. Going from the top down:

• Head: dizziness, headache, heavy head, muddled thinking — phlegm clouding the clear orifices (tan meng qing qiao). The phlegm-dampness is mixed into the body, and qi and blood no longer circulate smoothly. Many cardiovascular and cerebrovascular diseases and blood-pressure problems in modern medicine are often related to phlegm;
• Throat: a frequent feeling of blockage, swelling and pain;
• Stomach: frequent nausea and vomiting, coughing up phlegm (this is the visible kind); the stomach often feels full and bloated, rumbling, and things come back up; even a little food makes you uncomfortable;
• Stool: easily sticky — it sticks to the toilet bowl;
• Heart: if phlegm clouds the heart orifices, there are palpitations, panic, a racing uneasy heart, even disordered consciousness — many mental illnesses are related to phlegm, which is why we use phlegm-resolving formulas such as Wen Dan Tang (Warm the Gallbladder Decoction);
• Whole body: sometimes you feel hot, sometimes cold; the body feels sticky, sometimes with low-grade fever; local patches of alternating heat and cold — because phlegm blocks the flow like a rock dropped in the middle of a small stream: too much water on one side, too little on the other, so part of the body runs hot and part runs cold. People with phlegm can sometimes feel lumps under the skin, called tan he (phlegm nodules), and checkups may find various nodules inside.

💬 Note from Doctor Luo: In short, phlegm is all kinds of “blockage.” It interferes with the movement of qi and blood, and produces all sorts of abnormal symptoms.

How to tell if you have phlegm? Look at the tongue coating, feel the pulse

How do you recognize whether you have a lot of phlegm? The clearest sign is the tongue: the coating is thick and greasy (hou ni), sticky and slimy on top, and the tongue body is swollen and enlarged. On the pulse, you feel the various blockage patterns — like this patient, whose pulse was so rough that the beats couldn’t even be counted. In other cases the pulse feels like a ball rolling around inside — that, too, is connected to phlegm.

💬 Note from Doctor Luo: Phlegm is further divided into cold phlegm and hot phlegm. Cold phlegm: the tongue coating is white, snowy white, and the coughed-up phlegm is clear or pale greenish-white. Phlegm-heat: what you cough up is yellow phlegm, and the tongue coating often carries yellow — a yellow, greasy coating is phlegm-heat.

Back to this case: why does it look cold when it is actually hot?

In this particular case, as with many old case records, no tongue observation was written down — Doctor Luo Dalun considers this a real omission, because in a phlegm-heat pattern the tongue would have been very distinctive: the coating should have been yellow and greasy, and the tongue body red.

💬 Note from Doctor Luo: Otherwise, seeing the cool limbs and the chills, you’d think: oh, isn’t this a cold pattern? No, it isn’t! The phlegm has blocked the channels (jing luo). The channels can’t conduct, qi and blood can’t reach the four limbs, so the arms and legs feel cold and cool — this is a manifestation of unblocked meridians, not true cold. Doctor Wang Mengying saw phlegm-heat, so he cleared heat and resolved phlegm — and the illness was cured.

Doctor Luo’s closing note: learn to resolve phlegm and keep the channels open

What did we learn today? Starting with Wang Mengying, we should come to recognize the phlegm-heat pattern — because strange illnesses often belong to phlegm.

💬 Note from Doctor Luo: In our daily lives, all sorts of physical problems are connected to phlegm. This includes the many people who, after COVID, suffer from lingering mental fog — part of it is deficiency of upright qi, but there is also an excess aspect, often phlegm and phlegm-stasis inside. So we should gradually understand how phlegm causes trouble, and gradually learn how to clear it out, keeping our channels open and unobstructed — this is especially important. Many of us have channels that are not open, or not open smoothly enough. The things that block us inside are basically a few kinds: dampness, phlegm, and stasis — and phlegm is one of the big ones. If you can learn the methods of resolving phlegm and gently clear it from time to time, it does your body good.

What to take away

• Looks cold does not mean it is cold. Cool limbs and chills can come from phlegm blocking the channels so that qi and blood cannot reach the extremities — the “cold” is only a symptom of blockage, not the nature of the illness.
• When an external wind-damp cold is not properly dispersed, it can transform into heat; and if heat is then warmed and tonified, the fluids are scorched into phlegm — this is the trap that nearly killed Mr. Shi.
• Doctor Wang Mengying’s method: clear heat first (huang lian, huang qin), then open the lung qi and regulate qi (jie geng, xing ren, yu jin, zhi shi, ju pi), then resolve phlegm-heat (bei mu, zhu ru, zi wan, radish juice), and give the heat an exit (zhi zi, dan dou chi, tong cao). Free the qi mechanism, and the phlegm moves and the heat descends.
• Phlegm comes in visible and invisible forms. The lung stores it, the spleen generates it, and the kidney is its root.
• Strange illnesses often belong to phlegm — when a problem resists every conventional treatment, ask whether phlegm is the culprit.
• How to spot phlegm: a thick greasy tongue coating, a swollen tongue, sticky stool that clings to the toilet, a blocked feeling in the throat, and nodules or lumps in the body. Hot phlegm shows a yellow coating and yellow sputum; cold phlegm shows a white coating and clear sputum.
• Doctor Wang Mengying’s dietary trick for phlegm-heat: Snow Soup (jellyfish and water chestnut, or jellyfish and radish) — a gentle food-based way to resolve phlegm-heat.

Compiled from Doctor Luo Dalun’s recorded commentary on the case records of Doctor Wang Mengying; the case is from Wang’s Case Records (《王氏医案》, also known as 《回春录》).