Theory of yin and yang
The overall concept of TCM theory system, syndrome differentiation and treatment are closely related to the theory of yin and yang. Yin and yang belongs to the category of ancient Chinese philosophy that describes the interrelation of nature.
For a long time, yin and yang theory and the development of Chinese medicine theory system were closely related, and it is used to explain the body's physiological and pathological events, in order to guide clinical syndrome differentiation.
Chinese medicine believes that the healthy human body is the unity and balance of the opposing yin and yang. The dynamic balance of yin and yang plays an important role in the physiological activities of the human body. Only in the state of balance between yin and yang, the physiological function of the organs of the body can work normally.
Once the coordination between yin and yang is compromised, this will cause either yin or yang to be in excess or in deficiency, thus illness will occur.
For example during the spring and summer, cold often comes with symptoms such as fever, cough, sore throat, thirst etc. This is due to the invasion of heat-wind pathogen, causing the body yang to be in excess. While during winter, cold often comes with symptoms such as abdominal pain, diarrhea, feeling cold etc. This is due to the invasion of chill-wind pathogen, causing the body yang to be in deficiency. Some of the chronic diseases will also cause serious consumption of the body yang or yin jing.
As the root cause of many illness is caused by yin and yang imbalances, treatment should first consider the adjustment of yin and yang, by adjusting the yin and yang to return to balance and harmony.