It is caused by improper diet, irregular life, depression, overstrain, old age, and weakness, which in turn leads to the disharmony between yin and yang, or internal generation of five pat...

• 其病因病机是:饮食不节、起居无常、情志不遂、劳逸无度、年老体衰等致脏腑气血阴阳失调,或内生五邪,或耗伤正气。