Wu Jutong

Wu Jutong a physician of the Qing dynasty (1758-1836) who is remembered above all for his systematic treatment of warm diseases, the febrile illnesses that differ from the cold damage described in the older classics, and whose three-layer analysis of disease revolutionised the understanding of epidemic fever in Chinese medicine.

Life and Career

Wu Jutong, whose personal name was Wu Tang, was born in 1758 in Huaiyin, in what is now Jiangsu province, in the fertile and prosperous region of the lower Yangtze. He lived through the later decades of the eighteenth century and the early nineteenth, a period of cultural achievement in the Jiangnan region, where scholarship and the arts flourished. He came from a family with a tradition of learning and received a thorough classical education before turning to medicine.

An early experience of the death of family members from illness is said to have turned him toward the study of medicine, and he devoted himself to the subject with the diligence of a scholar. He studied the classical texts, especially the cold damage treatise of Zhang Zhongjing, and he drew on the work of the earlier physicians of the Jiangnan region who had begun to distinguish warm diseases from the cold damage of the old tradition. He practised in the cities of the region and gained a wide reputation.

He was a careful and self-critical physician who revised his own views in the light of experience, and his writings show an unusual willingness to acknowledge the limits of established doctrine. Although his fame as a clinician was considerable, his lasting importance lies in the book in which he set out his ideas, a work that was published only after his death and that became one of the central texts of the warm disease school.

Warm Diseases and the Three Burners

Wu Jutong's great contribution was his analysis of warm diseases, the acute febrile illnesses that he and others held to differ in cause, course and treatment from the cold damage discussed by Zhang Zhongjing. Whereas cold damage was thought to arise from cold entering the body, warm diseases were attributed to a warm or pestilential influence, and they followed a different pattern of development. Wu Jutong argued that the accepted methods for cold damage were inappropriate for these fevers and could even be harmful.

He organised the course of warm disease according to the theory of the three burners, dividing the body into an upper, a middle and a lower region and describing the typical signs and appropriate treatment for the disease as it affected each. In the upper burner the illness shows itself in the head, throat and lungs; in the middle burner it involves the stomach and intestines; in the lower burner it affects the liver and kidneys. This scheme gave physicians a clear framework for locating the stage of the illness and choosing a remedy.

The three-layer analysis was not merely anatomical but described a progression, as the pathogenic influence moved from the surface toward the depths of the body. By identifying the layer involved, the physician could judge whether to disperse the influence outward, to clear heat from the interior, or to nourish the depleted vital substances. This graduated approach to fever was one of the most important advances in Chinese clinical medicine and shaped the treatment of epidemics for generations.

Diagnosis and Treatment

Wu Jutong placed great emphasis on the careful examination of the patient, including the appearance of the tongue and the quality of the pulse, which he used to determine the layer and character of the disease. He described in detail the changes in the tongue that accompany the successive stages of warm disease, and he used these signs to guide treatment with a precision that earlier writers had not attained. His attention to such diagnostic detail helped to make the warm disease teaching clinically usable.

His therapeutic method combined several approaches. He used drugs to clear heat, to resolve the pestilential influence, to free the bowels, to nourish the fluids and to preserve the vital substances of the body, and he devised formulas suited to each stage and each pattern. He was especially noted for remedies that nourished the fluids and the yin of the patient in the later stages of fever, when the depletion of the body's reserves had become the chief danger.

He also classified the many forms of warm disease, distinguishing among illnesses such as seasonal fever, damp-heat disorders, summerheat, autumn dryness and pestilential epidemics, and he described the particular signs and treatments of each. This classification brought order to a confusing variety of fevers and gave physicians a vocabulary for distinguishing one from another. The result was a coherent system that united the scattered insights of earlier practitioners of the Jiangnan region.

The Systematic Treatise

Wu Jutong's ideas were gathered in a book whose title has been rendered as a systematic differentiation of warm diseases, compiled from his notes and published after his death by his followers. The work set out his analysis of the causes and course of warm disease, his method of diagnosis by the three burners, and a large collection of formulas for the treatment of the various stages and forms of illness. It became one of the canonical texts of the warm disease school.

The book was notable for its clear organisation and for the practical value of its prescriptions, many of which were added to the standard repertoire of Chinese pharmacy and are still employed in the treatment of infectious and inflammatory disease. Its formulas for nourishing the fluids and clearing heat in the later stages of fever proved especially influential, and they were adopted by physicians throughout China, who found in them a reliable guide when confronting the epidemics that recurred in town and countryside and the fevers that so often followed in the wake of war.

Among the earlier physicians whose work he built upon were Ye Tianshi, whose insights into warm disease had prepared the way, and the tradition that had grown up in the Jiangnan region through generations of clinicians confronting recurrent epidemics. Wu Jutong drew these strands together into a single system and gave them the systematic form that assured their transmission to later ages. His book thus stood at the end of a long line of inquiry and became the starting point for all who followed him in the study of epidemic fever.

Influence and Legacy

Wu Jutong became one of the two great figures of the warm disease school, and his three-burner analysis became standard teaching alongside the older cold damage doctrine. Physicians now had two complementary frameworks for understanding febrile illness, one suited to diseases of cold origin and the other to the warm and pestilential fevers that were so often epidemic. This dual inheritance enriched the practice of Chinese medicine and deepened its grasp of infectious disease.

His methods entered the mainstream of clinical practice and were taught in the medical schools of the late imperial and modern periods. His formulas for clearing heat, nourishing the fluids and reviving the depleted patient are still studied and applied, and the warm disease tradition that he helped to define remains an active part of traditional medicine today, especially in the treatment of infectious and inflammatory conditions.

He died in 1836, having spent his life in the service of the sick and in the patient refinement of his ideas. The book that carried his name preserved his contribution and transmitted it to posterity, and later physicians honoured him as the systematiser of warm disease whose clear thinking gave order to the most feared of all illnesses, the epidemic fever that swept through towns and families without warning.

See also

• Warm disease school
• Three burners
• Traditional Chinese medicine
• Zhang Zhongjing