Differentiation Differentiation of syndromes in TCM means analyzing clinical data of the patients collected by diagnosis.The analyze includes the cause, location,nature of the pathogenic changes,the state of Vital Qi,the degree of the disease.Differentiation Differentiation of syndromes in TCM means analyzing clinical data of the patients collected by diagnosis. The analyze includes the cause, location, nature of the pathogenic changes, the state of Vital Qi, the degree of the disease