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Chapter 15 of 27
金匮要略
Overall Paraphrase
This chapter focuses on the pulse manifestations, syndrome differentiation, and formulae for three categories of disorders: consumptive thirst (a condition characterized by thirst with excessive drinking and polyuria), difficult urination (difficulty in urination or abnormally reduced urine output), and strangury (painful urination with sand-like or stone-like sediment), containing nine entries on pulse and syndrome, and six formulae.
First, it discusses consumptive thirst due to Jueyin disease: the patient experiences thirst with a strong desire to drink, a subjective sensation of qi rushing upward from below toward the chest and heart, burning pain in the chest, a feeling of hunger yet no desire to eat, and vomiting upon forced eating. If purgation is erroneously applied at this point, uncontrollable diarrhea ensues.
The Cunkou pulse (radial artery) is floating and slow: floating indicates deficiency of wei qi floating superficially; slow indicates exhaustion and damage to the nutritive blood—wei qi (the qi circulating on the body surface, responsible for warming and protection) deficiency leads to failure of containment, while rong qi (the nutritive blood circulating within the vessels) exhaustion leads to depletion of yin fluids.
The Fuyang pulse (dorsal pedal artery, used in ancient times to assess the qi of the spleen and stomach) is floating and rapid: floating indicates hyperactivity of stomach qi, rapid indicates stomach heat consuming grain and causing hard stools. Hyperactive stomach qi leads to frequent urination; frequent urination damages fluids and makes the stools increasingly hard. Hardness and frequency mutually aggravate each other, thereby giving rise to consumptive thirst.
When a man suffers from consumptive thirst with increased urination—drinking one dou of water and voiding one dou of urine—Kidney Qi Pill (Shenqi Wan) is the primary treatment (formula found in the chapter on beriberi disease).
When the pulse is floating, urination is difficult, with slight fever and thirst, one should promote urination and induce sweating concurrently, using Five-Ingredient Powder with Poria (Wuling San) as the primary treatment (formula seen earlier).
When thirsty with a desire to drink, but water is vomited immediately upon entry, this is called water reversal (shui ni), treated primarily with Wuling San (formula seen earlier).
When thirst persists and drinking does not relieve it, Clam Powder Powder (Wenge San) is the primary treatment.
Wenge San formula: Five liang of clam shell powder, ground into a powder, mixed with five he of boiling water, taking one square-inch spoonful per dose.
Strangury manifests as: urine discharged like millet grains, lower abdominal cramping and pulling pain, with pain radiating to the umbilicus.
When the Fuyang pulse is rapid, there is heat in the stomach, manifesting as rapid digestion with strong appetite; the stools will necessarily be hard, and urination frequent.
For those with chronic strangury, sweating must not be induced; erroneous sweating will inevitably result in blood in the urine.
For difficult urination, internal fluid retention, and thirst, Trichosanthes and Ophiopogon Pill (Gualou Qumai Wan) is the primary treatment.
Gualou Qumai Wan formula: Trichosanthes root 2 liang, Poria 3 liang, Dioscorea 3 liang, Prepared Aconite 1 piece (processed), Ophiopogon 1 liang. Grind the above five ingredients into powder, form into pills with honey of wutong seed size, take 3 pills with water, three times daily; if ineffective, gradually increase to 7–8 pills, with free urination and a warm abdomen as the criterion for effectiveness.
For difficult urination, Pubescens Ash Powder (Puhui San) is the primary treatment; Talc and White Fish Powder (Huashi Baiyu San) and Poria and Salt Decoction (Fuling Rongyan Tang) are also both effective.
Puhui San formula: Pubescens ash 7 parts, talc 3 parts. Grind the two ingredients into powder, take one square-inch spoonful with water, three times daily.
Huashi Baiyu San formula: Talc 2 parts, burnt hair 2 parts (burned to ash), white fish 2 parts. Grind the three ingredients into powder, take one square-inch spoonful with water, three times daily.
Fuling Rongyan Tang formula: Poria half a jin, Atractylodes 2 liang, Rongyan (salt) the size of one pill. Decoct the three ingredients together.
For thirst with drinking, dry mouth, and parched tongue, White Tiger plus Ginseng Decoction (Baihu Jia Renshen Tang) is the primary treatment (formula found in the chapter on heat-stroke).
For floating pulse, fever, thirst with desire to drink, and difficult urination, Polyporus Decoction (Zhuling Tang) is the primary treatment.
Zhuling Tang formula: Polyporus (peeled), Poria, Equine Gelatin, Talc, Alisma, 1 liang each. For the above five ingredients, use 4 sheng of water to decoct the first four ingredients first, reducing to 2 sheng, strain out the dregs, add Equine Gelatin to dissolve, take 7 he warm, three times daily.
The academic core of this chapter lies in understanding the etiology and pathogenesis of consumptive thirst and urinary abnormalities from multiple aspects of fluid metabolism, embodying Zhang Zhongjing's diagnostic spirit of "Observe the pulse and syndrome, know what error was committed, and treat according to the syndrome."
Jueyin consumptive thirst—qi counter-flow upward, mixed cold and heat: Jueyin is the meridian where yin ends and yang begins. When diseased, yin and yang fail to connect smoothly. Wood-fire flaring upward causes consumptive thirst, qi rushing toward the heart, and burning pain in the chest; liver wood encroaching upon the spleen causes hunger without desire to eat, and vomiting upon eating. This is the typical pattern of "upper heat, lower cold," fundamentally different from simple yin deficiency with dryness-heat.
Consumptive thirst from qi-blood depletion—wei qi deficiency and rong exhaustion: The Cunkou pulse being floating and slow reveals another pathogenic route of consumptive thirst—wei qi insufficiency leads to failure of the body surface to maintain containment, allowing fluids to leak externally; rong qi exhaustion leads to deficiency of yin blood, failing to control yang. This indicates that consumptive thirst is not solely due to excessive heat; depletion and damage are also important foundations.
Stomach-heat consumptive thirst—Fuyang pulse floating and rapid: Fuyang assesses the spleen and stomach. Floating indicates abundant stomach qi; rapid indicates heat in the stomach. Stomach heat causes rapid digestion with constant hunger; heat forces fluids to deviate toward the bladder, causing frequent urination; frequent urination depletes fluids in the intestines, causing hard stools. This forms a vicious cycle chain of "heat—digestion—dryness—hardness," serving as the theoretical prototype for the later concept of "upper consumptive thirst belongs to the lung, middle consumptive thirst belongs to the stomach."
Kidney-deficiency consumptive thirst—drinking one, voiding one: In males, the kidney serves as the congenital foundation. Kidney-yang insufficiency prevents the steaming and transformation of fluids to moisten the mouth upward, hence thirst with excessive drinking; kidney qi fails to consolidate, causing fluids to flow directly to the bladder, hence drinking one dou and voiding one dou. Treatment with Kidney Qi Pill embodies the method of "replenishing the source of fire to disperse the yin shadows"—warming yang to transform qi, demonstrating that consumptive thirst cannot be entirely covered by cold-cool moistening approaches alone.
Internal fluid retention—thirst with difficult urination: The Wuling San syndrome, Gualou Qumai Wan syndrome, and Zhuling Tang syndrome all share the core features of "difficult urination" combined with "thirst." The pathogenesis lies in accumulated fluid retention and failure of qi transformation—when water fails to transform into fluids, thirst results; when water fails to move, urination becomes difficult. This is precisely the diagnostic key of "thirst due to fluid retention, not fluid deficiency," fundamentally different in treatment approach from simple yin-deficiency thirst.
Strangury patients should not be sweated—fluids and blood share the same origin: Prolonged strangury involves lower jiao damp-heat damaging yin, with yin blood already depleted. Sweat is the fluid of the heart; blood and sweat share the same origin. Inducing further sweating further damages yin blood, and heat forces blood to extravasate, hence inevitable hematuria. This is a specific application of the principle "those who have lost blood should not be sweated; those who have lost sweat should not be bled."
Pluralistic view of consumptive thirst pathogenesis: This chapter divides consumptive thirst into five patterns: Jueyin mixed cold-heat, wei deficiency with rong exhaustion, stomach-heat hyperactivity, kidney-yang decline, and internal fluid retention, demonstrating the complexity of consumptive thirst pathogenesis. Although diabetes mellitus in modern medicine cannot be fully equated with "consumptive thirst" in Chinese medicine, the emphasis on different constitutional states and pathogenic mechanisms underlying symptom clusters such as "excessive drinking, polyuria, and wasting" retains relevance in individualized chronic disease management.
"Drinking one dou, voiding one dou": This early quantitative observation of the ratio between intake and output reflects the spirit of simple clinical observation in ancient times. This "intake-output balance" mode of thinking shares logical parallels with modern medicine's attention to fluid balance, differing only in the means and precision of observation.
The water reversal phenomenon: The pattern of vomiting upon drinking despite thirst may be clinically observed in certain gastrointestinal dysfunctions, pyloric obstruction, and elevated intracranial pressure. The ancients classified this as "fluid retention in the stomach with failure of qi to transform fluids," employing Wuling San to strengthen the spleen and promote diuresis—an empirical symptomatic treatment approach.
Description of strangury: The depiction of "urine discharged like millet grains, lower abdominal cramping, pain drawing to the umbilicus" is highly consistent with the clinical presentations of urinary stones and urinary tract infections. Without access to imaging or microbiological methods, the ancients nonetheless accumulated corresponding experience in syndrome differentiation through meticulous observation of symptoms and signs. Agents such as talc, Poria, and Ophiopogonqumai used to promote diuresis and unblock strangury remain in clinical use in Chinese medicine today.
Limitations and demystification: Records such as using the single herb "Wenge San" to treat thirst belong to ancient experiential formulae lacking modern clinical evidence support. Some pulse diagnosis correlations, such as the Fuyang pulse being floating and slow, cannot be directly verified by modern medicine and should be regarded as theoretical expressions under specific historical conditions.
Moderation in diet, avoiding excessive rich, fatty, and pungent foods: This chapter repeatedly addresses the relationship between stomach heat and consumptive thirst, with stomach-heat hyperactivity often arising from prolonged dietary indiscretion. Daily diet should favor lightness, avoiding overeating, and minimizing pungent and drying foods to help maintain harmony of stomach qi and fluid balance. 🌿
Attention to drinking habits: "Water reversal" suggests that drinking should not be too rapid or excessive. Cultivating a habit of drinking small amounts frequently, with warm water taken slowly, supports the spleen and stomach in transporting water and fluids. 🌊
Regular daily routine, avoiding overwork that depletes fluids: The text's statement that "overwork exhausts rong qi" indicates that excessive fatigue quietly depletes yin blood. Maintaining adequate sleep, balancing work and rest, and avoiding chronic sleep deprivation all positively contribute to preserving yin fluids and wei qi balance.
Emotional regulation: In Jueyin disease, "qi rushing toward the heart, burning pain in the chest" is closely related to emotional constraint and chaotic qi movement. Maintaining emotional ease and avoiding prolonged suppression, anxiety, and worry helps keep qi flowing smoothly and fluids distributing normally. 💨
Do not ignore urinary abnormalities: When painful urination, stones or blood in the urine, or significantly abnormal urine output occur, prompt medical evaluation is warranted rather than attempting self-treatment. 🩺
Related Concepts:
Further Reading:
This content is based on classical Chinese medical literature and is provided solely for traditional cultural study and research purposes. It does not constitute any medical diagnosis, medication recommendations, or treatment advice. If you experience discomfort, please seek prompt medical attention.