A note to the reader
What Was Traditional Chinese Medicine
Observing for Two Thousand Years?
This isn’t an article asking you to believe in acupuncture. And it isn’t an introduction to TCM theory.
It starts with a single question: If two thousand years of clinical observations were systematically recorded about one anatomical point, how closely would those records map onto what we now understand as modern pathophysiology?
The point in question sits on the dorsum of the foot — between the first and second metatarsals, just proximal to where the dorsalis pedis artery is palpable. In TCM it’s called Taichong (LR3). East Asian physicians documented its clinical indications continuously from approximately 200 BCE through 1601 CE. What they recorded, and how it aligns with contemporary hepatology, is worth a close look.
Bottom line up front: Across four major classical texts spanning 1,800 years, practitioners independently documented a clinical syndrome that maps with striking accuracy onto portal hypertension and end-stage liver disease — before either concept existed in Western medicine.
The acupuncture point
LR3 (Taichong):
Anatomical context
Contemporary research has associated LR3 stimulation with autonomic nervous system modulation, blood pressure changes, and altered pain thresholds. That’s not what we’re focusing on here.
The question is simpler: what conditions did clinicians associate with this point over two millennia, and do those conditions form a recognizable pattern from a modern pathophysiology standpoint?
Anatomical location
Between the 1st and 2nd metatarsals, in the depression just proximal to the metatarsophalangeal joints. The dorsalis pedis artery is palpable in this region. Needling depth approximately 0.5–1 cm subcutaneous.
~200 BCE · Huangdi Neijing (Yellow Emperor’s Classic)
First record:
Lower abdominal and inguinal vascular congestion
The earliest systematic documentation of LR3. The indications, translated into modern clinical language:
The physicians of this era had no knowledge of portal anatomy. They selected this point based on the meridian pathway — the liver channel passes through the inguinal region and lower abdomen. What they recorded as indications, we now recognize as peripheral signs of portal hypertension.
282 CE · Zhenjiu Jiayi Jing (Systematic Classic of Acupuncture)
Four hundred years later:
Someone documented caput medusae
Compiled by Huangfu Mi, this text builds on earlier records while adding two clinically significant observations.
Key new findings
環臍痛 (huán qí tòng)
“Pain radiating circumferentially around the umbilicus”
This is not a generic abdominal pain entry. The description of pain encircling the umbilicus in a radial pattern is consistent with dilated periumbilical veins under tension — what we now call caput medusae, a hallmark sign of portal hypertension. These physicians were describing what they saw.
腹堅痛不得臥 · 脇下支滿
“Rigid abdomen; unable to lie supine. Fullness and pressure below the ribs.”
Tense ascites preventing supine positioning. Left upper quadrant pressure consistent with hepatosplenomegaly.
This text also introduces systemic findings for the first time:
色蒼蒼如死灰狀
Ashen, grey complexion
Cirrhotic facies. Reduced cutaneous perfusion in hepatic failure or shock.
羸瘦
Severe weight loss and muscle wasting
Hepatic cachexia. Impaired hepatic protein synthesis.
小便不利如癃狀
Oliguria or anuria
Hepatorenal syndrome. Renal perfusion compromise secondary to ascites.
意恐懼 · 氣不足
Profound anxiety; extreme fatigue and weakness
Early hepatic encephalopathy. Ammonia metabolism dysfunction.
At this point, the authors still haven’t named the liver as the cause. But they have documented — as indications for a single acupuncture point — caput medusae, ascites, hepatosplenomegaly, hepatorenal syndrome, and prodromal hepatic encephalopathy. Taken together, this is the portal hypertension syndrome.
752 CE · Waitai Miyao (Arcane Essentials from the Imperial Library)
470 years later:
“The liver is the cause”
Compiled by Wang Tao during the Tang Dynasty. For the first time, the causal relationship is made explicit.
First appearance
黃膽 · 肝脹
Jaundice · Hepatomegaly
Everything that had been accumulating — lower abdominal swelling, periumbilical vascular dilation, oliguria, progressive systemic deterioration — is now attributed to failure of the liver itself.
Two critical findings are added at this stage:
The significance here isn’t just that new symptoms were added. It’s the direction of reasoning. The observation shifted from “there is congestion in the lower abdomen” to “the liver is failing, and this is causing everything downstream.” It took Western medicine several more centuries to establish the same causal chain for portal hypertension.
1601 CE · Zhenjiu Dacheng (Great Compendium of Acupuncture)
The complete clinical picture:
End-stage liver failure
Compiled by Yang Jizhou in the Ming Dynasty. By this point, the documented indications for LR3 span the full spectrum of end-stage cirrhosis complications.
嘔血 · 便血 · 女子漏下不止
GI bleeding + uncontrolled uterine hemorrhage
Coagulopathy secondary to liver failure. Depletion of hepatic coagulation factor synthesis. Prolonged PT/INR. Multi-site bleeding tendency.
馬黃 (mǎ huáng — archaic term for severe jaundice)
Severe, progressive jaundice
Complete failure of bilirubin metabolism. Cholestatic hepatitis or fulminant hepatic failure.
虛勞浮腫
Generalized edema + profound functional decline
Hypoalbuminemia with anasarca. Loss of hepatic albumin synthesis → reduced oncotic pressure → diffuse fluid third-spacing.
A notable entry — cardiac involvement
“厥心痛, 色蒼蒼如死灰狀, 終日不得太息者, 肝心痛也. 取行間, 太衝.”
Translation: “Severe cardiac pain with an ashen complexion and inability to breathe deeply throughout the day — this is liver-cardiac pain. Needle LR2 and LR3.”
This describes hepatic failure extending to cardiac compromise. The modern pathways are recognizable: (1) hemorrhagic shock from variceal rupture → myocardial ischemia; (2) toxic arrhythmia from unmetabolized ammonia and bile acids disrupting cardiac conduction; (3) cardiac decompensation in the context of hyperdynamic circulation. The classical physicians named it “liver-heart pain” and reached for the same point.
Comparative analysis
Where two thousand years of observation
meets modern hepatology
The progression of documented findings across the four texts, mapped against contemporary clinical terminology:
| Text / Period | Clinical observations recorded | Modern equivalent |
|---|---|---|
| ~200 BCE Huangdi Neijing |
Lower abdominal swelling, inguinal herniation, mechanical back pain, pigmentation changes | Peripheral signs of portal hypertension. Lower abdominal vascular congestion. |
| 282 CE Jiayi Jing |
Periumbilical radial pain, rigid abdomen, subcostal fullness, oliguria, ashen complexion, muscle wasting, anxiety | Caput medusae, Ascites, Hepatosplenomegaly, Hepatorenal syndrome, Hepatic encephalopathy (prodrome) |
| 752 CE Waitai Miyao |
Jaundice, hepatomegaly, intermittent hematemesis, pallor | Jaundice (cause first named), Hepatomegaly, Esophageal variceal bleeding, Hemorrhagic anemia |
| 1601 CE Zhenjiu Dacheng |
Multi-site hemorrhage, severe jaundice, anasarca, cardiac involvement | Coagulopathy, Fulminant jaundice, Anasarca (hypoalbuminemia), Hepatocardiac syndrome |
Western medicine didn’t systematically characterize portal hypertension pathophysiology until the 19th and 20th centuries. East Asian clinicians, working independently and without knowledge of portal anatomy, documented the same clinical syndrome — attributed to a single anatomical point — more than a thousand years earlier. The mechanistic explanations were different. The observational accuracy was not.
Complete reference
LR3 — Full historical indication record
with modern clinical annotation
Original text + contemporary interpretation · Four classical sources compared
| Category | Huangdi Neijing ~200 BCE |
Jiayi Jing 282 CE |
Waitai Miyao 752 CE |
Zhenjiu Dacheng 1601 CE |
|---|---|---|---|---|
| Hepatic encephalopathy Cachexia |
— |
色蒼蒼如死灰狀Ashen complexion (cirrhotic facies)
終日不得太息Unable to take a deep breath all day
意恐懼 · 氣不足Inexplicable anxiety; profound weakness (encephalopathy prodrome)
羸瘦Severe wasting (hepatic cachexia)
男子精不足Reduced reproductive function in men
|
面蒼黑Dark, ashen complexion
意恐懼 · 氣不足Anxiety; extreme weakness
羸瘦Wasting
|
蒼然如死狀Deathly pale-grey appearance
虛勞浮腫 ★ newExhaustion + generalized edema (hypoalbuminemia)
面目蒼色Ashen face and eyes
|
| Portal hypertension Abdominal signs |
婦人少腹腫Lower abdominal swelling in women
丈夫癀疝Inguinal herniation in men
|
環臍痛 ★Periumbilical radial pain (caput medusae)
腹堅痛不得臥Rigid abdomen; unable to lie supine (tense ascites)
陰囊兩丸縮Testicular atrophy (endocrine dysfunction)
|
環臍痛 · 腹堅不得臥Periumbilical pain, rigid abdomen
暴脹 ★Acute abdominal distension (SBP or acute decompensation)
|
Small intestine pain, inguinal painContinued abdominal symptoms
小兒卒疝 ★ newAcute pediatric presentation (scope extended to children)
|
| Hepatobiliary Jaundice · Infection |
— |
脇下支滿Subcostal fullness (hepatosplenomegaly)
Vomiting, chills, low-grade fever
|
黃膽 ★ firstJaundice — first explicit mention
肝脹 ★ firstHepatomegaly — liver named as cause
熱中善渴Heat sensation, thirst
|
馬黃Severe jaundice (fulminant hepatic failure)
Chills, epidemic disease, dry throat
|
| Coagulopathy Hemorrhage |
— | 女子漏血Persistent uterine bleeding |
時時嘔血 ★Recurrent hematemesis (variceal bleeding)
面唇色白Pallor of face and lips (hemorrhagic anemia)
|
嘔血 · 便血Hematemesis + melena (GI bleeding)
女子漏下不止Uncontrolled uterine hemorrhage (coagulopathy)
|
| Hepatorenal syndrome Urinary |
腰痛不可以俛仰Back pain; unable to flex or extend |
小便不利如癃狀Oliguria / anuria (hepatorenal syndrome)
Urinary incontinence, genital pain
|
Lower abdominal fullness, oliguria, urinary incontinence | Reduced urine output, urinary frequency, incontinence |
| Skin / Mucosal External signs |
面塵脫色Facial pigment changes (chronic liver disease)
Dry throat
|
Darkening facial pigmentation, dry throat | Dark, ashen face + pallid lips and face (anemia), dry throat | Ashen complexion and eyes, dry throat with frequent thirst |
Closing thoughts
The same patient.
A different lens.
TCM and Western medicine use different languages, different conceptual frameworks, and in many cases, different standards of evidence. That’s worth acknowledging.
But what this review shows is that two thousand years of clinical observation about a single anatomical point maps with striking precision onto the way modern medicine describes the progression of portal hypertension and liver cirrhosis.
The mechanistic explanations were wrong, or at least incomplete. But the pattern recognition — what symptoms cluster together, how they progress, which body systems fail and in what sequence — was not. It was documented independently, centuries before Western hepatology reached the same conclusions.
The patients we see in clinic — with cirrhosis, with ascites, with bleeding tendencies — are the same patients described in these texts.
Acupuncture practitioners have been reading the foot for these signals for two thousand years.
Whether that observation has clinical utility today is a question worth exploring.
The records are there. The parallel is real. The interpretation is yours.
This article is based on the knowledge and clinical experience of
Dr. Byoungjin Na, Dr.TCM · Director of GreenLeaf Acupuncture & Herb Clinic, Vancouver BC
with editorial assistance from Claude AI.
© 2025 GreenLeaf Acupuncture Clinic. All rights reserved. · Healthy Body, Healthy Mind.
