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Deficiency and Excess of TCM Ⅰ
During the conflict, the vital Qi and pathogenic factors can influence each other and mutually wax and wane. Generally speaking, when the vital-Qi is exuberant, it can suppress pathogenic factors so as to prevent a disease. However, either the deficiency of the vital-Qi in conquering pathogenic factors. In such cases, pathogenic factors will take the advantage of the vital-Qi and cause a disease. With the rise and fall of the conflict between the vital-Qi and pathogenic factors, they can transform from the deficiency to the excess and vice versa.
Excess syndrome occurs when the invading pathogens are exuberant, while exhaustion of the vital essence brings on deficiency syndrome, excess syndrome mainly indicates the excess of pathogenic factors, namely, the pathological development mostly based on the excess of pathogenic factors, while the patient’s vital-Qi is strong enough to resist pathogenic factors as the same time, thus the conflict between the two sides is very intense, which clinically shows excess syndrome of strong reaction. Such syndrome can be found in the early or middle stage of exopathic disease or those diseases induced by the stagnation of phlegm, food, water and blood within the human body. The symptoms like high fever, mania, loud speaking and coarse breathing, abdominal pain with tenderness, uroschesis and constipation, replete pulse, belong to excess syndrome.
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