• Journal of Korean Medical classics
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• v.30 no.3
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• pp.41-54
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• 2017

Objectives : Yoondongri is a famous Korean medical doctor in the 18th century. He wrote Chochangkyeul, a special medical book which records his treatment based on the theory of Ungi. Nevertheless, his life and his book have not received due research it deserves. Methods : The paper studied the family tree as revealed in the Papyeong Yoon clan and Chochangkyeul. Further study was done on Yoon's medical theories and clinical features as discovered in Chochangkyeul and Ungiyeonron. Results & Conclusions : Very little is known about Yoondongri other than that he is the 27th generation from the progenitor of the Yoon clan of Papyeong Yoon clan, and that he is the great grandchild of Choongheon-gong Yoon Jeon. One of the important elements of his Ungi theory is Owoon Habgi, which illustrates the integration of Gabsin, Muui, Byeonggye, Gyungjeong, and Yimgi, thereby forming one Ilki. Ilki signifies that mechanisms of disease are inter-connected and one in essence. As the core of his clinical practice, he explains the 25 different types of diseases that can afflict those who are born in the years Gabsin, Muui, Byeongye, Gyungjeong, and Yimgi when they are met with their corresponding year. Yoon described for each script the mechanism of disease, symptom, treatment, and prescription, all of which showcases his status as a great clinical practitioner. His application of Ungi theory is uncomplicated and accessible. His method was also highly effective, the likes of which were unseen even in China and Japan. His prescriptions are mainly based on the Ungi treatment found in Jinmutaek's Saminang, and on Donguibogam.

• Journal of Korean Medical classics
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• v.30 no.2
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• pp.31-43
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• 2017

Objectives : Written by Yoongdongri in the 18th century Chosun, Chochangkyeul is a book that specially deals in Ungi. Yoon understood a person's body constitution by taking into factor the person's birth year, and used this information to determine his Ungi type, and understood his disease mechanism. Methods : Following the study on the first part of Chochangkyeul, named Ungiyeonron, the paper tries to study the book's second part, called Yongyakgwon. The book's core messages are summarized upon a thorough inspection. Results & Conclusions : Yoondongri was a highly-acclaimed doctor in the 18th century Chosun, and also an Ungi practitioner who utilized the theory of Ungi in his clinical practices. His practices were mainly based on the prescription of Ungi found in Chenwuze's Sanyinfang, coupled with almost all parts of Donguibogam's Husebang. He had an extensive clinical experience which helped him describe his methods of quickly responding to the side effects that sometimes occur due to misuse of medicine. Such detailed descriptions are never found in past medical books, which gives Yoon's book a great level of historical importance. Yongyakgwon divides the scripts between Gabsin, Muui, Byungye, Gyungjeong, and Yimgi in accordance with the theory of Ounhabgi, and also introduces treatments based on Yukisachun. Jangbupasuyak also introduces about six external organs and six internal organs with relation to treating wind medicine, treating heat medicine, treating cold medicine, treating dry dampness medicine, dryness-moistening medicine, pulling meridian medicine. All of these can be applied to patients easily.