Clinical-Reasoning on emsenn.net

Blood Stasis

Thu, 02 Apr 2026 00:00:00 +0000

Blood stasis (xue yu 血瘀) is a pathological condition in Traditional Chinese Medicine in which blood flow is impeded, slowed, or obstructed. It is not merely “poor circulation” in the colloquial sense — it is a specific diagnostic category with characteristic signs, defined causes, predictable complications, and targeted treatment principles. Blood stasis is one of the most clinically important pathological products in TCM because it both results from and causes further disease, creating self-reinforcing cycles of obstruction and dysfunction.

Common TCM Patterns: A Reference

Thu, 02 Apr 2026 00:00:00 +0000

This is a quick-reference guide to the most commonly encountered patterns in TCM clinical practice. Each entry gives the pattern name, its key signs, the diagnostic tongue and pulse findings, and the treatment principle. For full understanding of how patterns work, see Understanding TCM Patterns.

¶Qi patterns

¶Qi deficiency (qi xu 气虚)

Key signs: Fatigue, shortness of breath on exertion, weak voice, spontaneous sweating, poor appetite Tongue: Pale, possibly with tooth marks Pulse: Weak (xu) or empty (kong) Treatment: Tonify Qi. Primary herb: Huang Qi (Astragalus)

Damp-Heat

Thu, 02 Apr 2026 00:00:00 +0000

Damp-heat (shi re 湿热) is a compound pathological pattern in Traditional Chinese Medicine that combines two distinct pathogenic qualities — dampness and heat — into a condition that is characteristically stubborn, difficult to resolve, and clinically significant. It is one of the most commonly encountered combined patterns in TCM practice, particularly in conditions affecting the hepatobiliary system, urinary tract, skin, and digestive organs. It is the pattern for which Hu Zhang (Japanese knotweed root) is most specifically indicated.

Eight Principles

Thu, 02 Apr 2026 00:00:00 +0000

The Eight Principles (ba gang 八纲) are the most fundamental diagnostic framework in Traditional Chinese Medicine. They organize all clinical findings into four pairs of complementary opposites that locate a patient’s condition within a diagnostic coordinate system:

Pair	Question it answers
Interior / Exterior (li / biao 里/表)	Where is the problem?
Hot / Cold (re / han 热/寒)	What is its thermal character?
Excess / Deficiency (shi / xu 实/虚)	Is something present that shouldn’t be, or absent that should be?
Yin / Yang (yin / yang 阴/阳)	What is the overall character?

Every TCM diagnosis begins with the Eight Principles. Before identifying which organ system is involved or which specific pathological products are present, the practitioner determines: is this interior or exterior? Hot or cold? Excess or deficient? Yin or Yang? These four determinations establish the basic treatment strategy — the wrong determination leads to the wrong treatment.

Pulse Diagnosis Basics

Thu, 02 Apr 2026 00:00:00 +0000

Pulse diagnosis is one of TCM’s two signature diagnostic methods (alongside tongue diagnosis). Where Western medicine takes the pulse to measure rate and rhythm, TCM reads the pulse as a complex signal carrying information about the state of Qi, Blood, the organ-function systems, and the nature of any pathological pattern present. A skilled TCM practitioner can identify the Eight Principles character (interior/exterior, hot/cold, excess/deficient) and narrow the organ-system involvement from the pulse alone.

This guide introduces the basic framework — enough to understand pulse references in TCM term definitions.

Tongue Diagnosis Basics

Thu, 02 Apr 2026 00:00:00 +0000

Tongue diagnosis is one of TCM’s most distinctive and reliable clinical tools. The tongue is the only internal organ visible from outside the body, and TCM holds that it reflects the state of the internal organ systems, the balance of Qi and Blood, and the presence of pathological factors with a specificity that has no equivalent in Western clinical examination. This guide teaches you the basics — enough to read the common findings that appear in TCM term definitions throughout this repository.

Understanding TCM Patterns

Thu, 02 Apr 2026 00:00:00 +0000

This tutorial teaches you to understand TCM pattern names — the phrases like “Liver Qi stagnation,” “Kidney Yang deficiency,” or “damp-heat in the Lower Burner” that appear throughout TCM herb entries, clinical discussions, and this repository’s TCM content. You do not need any prior knowledge. By the end, you will be able to parse any pattern name and understand what it describes.

¶Why patterns, not diseases

Western biomedicine diagnoses diseases — specific pathological entities with defined mechanisms. “Type 2 diabetes” names a disease: insulin resistance and beta-cell dysfunction, measurable by blood glucose and HbA1c, treated by targeting those mechanisms.

What Happens in a TCM Consultation

Thu, 02 Apr 2026 00:00:00 +0000

This tutorial describes what happens during a consultation with a Traditional Chinese Medicine practitioner, so you know what to expect and understand why they do what they do. No prior knowledge of TCM is required.

¶The four examinations

A TCM consultation uses four methods of assessment, called the four examinations (si zhen 四诊). Every consultation involves all four, though the emphasis varies.

¶1. Looking (wang 望)

The practitioner observes you — your complexion, posture, movements, and energy level — from the moment you walk in. They notice things a Western doctor might also note (pallor, posture, gait) and things they probably would not (the brightness of your eyes, the quality of your skin’s luster, whether your overall bearing suggests vitality or depletion).

Etiology and Pathology in TCM

Sat, 07 Mar 2026 00:00:00 +0000

TCM etiology (bing yin 病因) describes how disease arises — not through the language of pathogens and pathology that biomedicine uses, but through the interaction between the body’s functional capacity (Zheng Qi 正氣, “righteous Qi”) and the factors that disrupt it. Disease occurs when disruptive factors overwhelm the body’s capacity to maintain balance. Whether a person becomes ill depends not only on the strength of the disruptive factor but on the state of the body that encounters it.

Pattern Diagnosis (Bian Zheng)

Sat, 07 Mar 2026 00:00:00 +0000

Pattern diagnosis (bian zheng 辨證) is the clinical reasoning method of traditional Chinese medicine. Where Western biomedicine diagnoses diseases — naming a pathological entity (diabetes, pneumonia, depression) and treating that entity — TCM diagnoses patterns of disharmony — identifying a configuration of signs and symptoms that reveals how the body’s functional systems are out of balance, and treating the pattern.

This distinction has practical consequences. Two patients with the same biomedical diagnosis may receive different TCM treatments because their patterns differ. Two patients with the biomedical diagnosis of “headache” might present very different TCM patterns: one with Liver Yang rising (throbbing temporal headache, irritability, red face, wiry pulse), another with Qi and Blood deficiency (dull, lingering headache, fatigue, dizziness, pale face, weak pulse). The biomedical diagnosis is the same; the TCM treatment is entirely different because the underlying patterns are different.

Acute Pain

Fri, 06 Mar 2026 00:00:00 +0000

Acute pain is pain that functions as a protective signal — proportionate to actual or imminent tissue damage, time-limited, and biologically useful. It is the pain that makes you withdraw from a hot surface, guard a broken limb, or seek medical attention for an abdominal emergency. Acute pain correlates reasonably well with nociceptive input: the signal intensity roughly matches the tissue threat, and the pain resolves as the tissue heals.

Acute pain serves the organism. It directs attention to injury, motivates protective behavior (withdrawal, guarding, rest), and activates autonomic responses (increased heart rate, blood pressure, cortisol) that support survival. In this context, pain is adaptive — a system working as designed.

Pain Assessment and Clinical Reasoning

Fri, 06 Mar 2026 00:00:00 +0000

Pain assessment is the foundation of pain management. Without understanding what kind of pain a patient is experiencing, what mechanisms are driving it, and what factors are modulating it, treatment becomes guesswork. This text outlines a structured approach to pain assessment that integrates the biological, psychological, and social dimensions of the pain experience.

¶The first question: believe the report

Pain is what the patient says it is. This is not a philosophical position; it is a clinical one. The patient has access to their pain experience. The clinician does not. Self-report is the gold standard of pain assessment because there is no objective measure that reliably captures pain intensity, character, or impact.

The Biopsychosocial Model of Pain

Fri, 06 Mar 2026 00:00:00 +0000

George Engel proposed the biopsychosocial model in 1977 as a corrective to the biomedical model’s assumption that disease could be fully explained by biological mechanisms alone. In pain medicine, the model asserts that the pain experience is shaped by three interacting domains: biological (tissue status, neural processing, genetics), psychological (beliefs, emotions, attention, learning history), and social (relationships, economic conditions, cultural context, structural inequality). None of these domains is optional or secondary. Each contributes measurably to the pain experience through identifiable mechanisms.