[The historical change of meanings about "Guan-Ge"]

The meaning of Guan-Ge has changed through history. Former research about Guan-Ge incorporated a mixture of some meanings, so it has been difficult to realize this concept. Therefore, this time I have tried to neglect this mixture by using a method of investigation in which the main books that are representative of the age have been considered individually. The definitions of all the classical literature about Guan-Ge have been clarified by this method. In spite of the fact that in the ancient era Guan-Ge meant a dying disease, after SHANG HAN LUN it was changed to mean a curable disease. The change of definition is as follows; at first it was a difficulty of urination and vomiting, secondly was a difficulty of urination and defecation, and at last the element of abdominal pain was added.