Syndrome differentiation of six channels theory, tri-Jiao theory and defensive qi and nutrition blood theory are three differentiation methods of exogenous disease which are indepen- dent, complementary and overlapping to each other. The three theories caused great difficulties in learning and using. It is necessary to carry out their consolidation and unification. Based on the analysis of pathogenesis and syndrome of three theories, it was found that syndrome differentiation of exogenous disease were fundamentally following syndrome differentiation of viscera and channels theory. Based on syn...
