The Nineteen Pathogeneses: Tracing the Source
The ancients summarized complex symptoms into nineteen core mechanisms. By observing symptoms, one can deduce the imbalance of the Five Elements within the body.
- All atrophy, asthma, and vomiting belong to the Upper: Often related to unsmooth Qi in the Upper Jiao.
- All reversal cold, constipation, or diarrhea belong to the Lower: Often related to the Lower Jiao.
- All wind, shaking, and dizziness belong to the Liver: Tremors, swaying, and vertigo.
- All sudden stiffness belongs to Wind: Sudden rigidity, spasms, or arching of the back. Note: The Liver opens into the eyes.
- Heart: All pain, itching, and sores belong to the Heart.
- Fire: Fever, chills, shivering, mania, upward Qi reversal, and painful ulceration.
- Heat: Stiffness, cloudy fluids, vomiting/diarrhea, and abdominal distension. Note: The Heart opens into the tongue; Fire/Heat causes the most widespread illnesses.
- All dampness, swelling, and fullness belong to the Spleen: Systemic or abdominal edema.
- All spasms and neck stiffness belong to Dampness: Joint stiffness caused by damp stagnation. Note: The Spleen opens into the mouth.
- All cold, contraction, and pulling belong to the Kidney: Curled up limbs and inability to stretch.
- All clear and cold bodily fluids belong to Cold: Excretions (urine, phlegm) that are clear, not sticky. Note: The Kidney opens into the ears.
The ancients said, 'All wind, tremors, and dizziness belong to the Liver.' In modern neuroscience, this accurately describes 'motor control disorders' of the central nervous system's basal ganglia and cerebellum. When neurotransmitters (like dopamine) in the brain become imbalanced, it leads to involuntary muscle twitches, spasms, dizziness, or stiffness (e.g., Parkinson's disease or epilepsy). TCM metaphorically refers to these abnormal neural discharges and loss of control as 'Internal Stirring of Liver Wind'.
Immunology & Microcirculation Translation: Inflammatory Mediators and Vasodilation
'All pain, itching, and sores belong to the Heart.' The Heart governs the blood vessels. Modern medicine has discovered that during infection or allergy, immune cells release histamine and cytokines, causing capillaries to rapidly dilate, become congested, and increase in permeability. This stimulates nerve endings, producing redness, swelling, heat, pain, and itching. These skin surface inflammatory responses are essentially changes in microcirculation and hemodynamics (the cardiovascular system).
'All dampness, swelling, and fullness belong to the Spleen.' In modern physiology, this refers to low plasma protein (poor digestion and absorption) or capillary hydrostatic pressure imbalances, preventing fluid from smoothly returning to the venous and lymphatic systems. It then permeates and stagnates in the interstitial spaces, forming edema. This is the specific manifestation of a chain-reaction 'hemodynamic collapse' triggered by abnormal gastrointestinal (Spleen) nutritional metabolism and decreased renal (Water) filtration function.
The Nineteen Pathogeneses repeatedly mention that 'all heat, blurred vision, spasms, manic behavior, and restlessness belong to Fire.' This precisely depicts 'Systemic Inflammatory Response Syndrome (SIRS)' and 'central nervous system heat shock' in modern critical care medicine. When core body temperature spirals out of control or during severe sepsis, the permeability of the brain's blood-brain barrier (BBB) changes. Once inflammatory substances penetrate the brain, they trigger abnormal neuronal firing and cerebral edema, leading to delirium, hallucinations (manic behavior), and even coma and convulsions (blurred vision and spasms). This is an extremely dangerous signal of the body on the verge of collapse.