Eight Principles
The Eight principles are the fundamental concepts of diagnosis in TCM. They are: external, internal, cold, heat, deficiency, excess, yin and yang. They are used when classifying disease syndromes ie deficiency syndrome. Among the eight principles, the external, excess and heat belong to yang ; the internal, deficiency and cold belong to yin. Therefore the yin and yang principles are regarded as the rulers of the eight principles.
The Eight principles are the fundamental concepts of diagnosis in TCM. They are: external, internal, cold, heat, deficiency, excess, yin and yang. They are used when classifying disease syndromes ie deficiency syndrome. Among the eight principles, the external, excess and heat belong to yang ; the internal, deficiency and cold belong to yin. Therefore the yin and yang principles are regarded as the rulers of the eight principles.
