Differentiation of Syndroms

systematically. The qualifiers exterior and interior relate to the depth of the disease, cold and heat to its nature, xu (deficiency) and shi (excess) to the opposing force in the struggle between the anti-pathogenic and the pathogenic factors, and 'yin and yang relate to the categories of the disease. Yin and yang are the chief principles ampng the eight. All the exterior syndromes, heat syndromes and syndromes of the shi (excess) type fall into the category of yang, while all the interior syndromes, cold syndromes and syndromes of the xu (deficiency) type fall into the category of yin. There may exist clinically among the syndromes those of exterior and cold, and interior and heat, which classify in the yin and yang complex. Below is given a brief description of the main clinical symptoms and signs on which differentiation of syndromes by the eight principles is based.

I.DIFFERENTIATION OF SYNDROMES ACCORDING TO EIGHT PRINCIPLES -> Exterior and interior

Exterior and interior form two principles relating to the depth of the diseased area and generalizing the direction of the development of the disease. Exterior syndromes refer to diseases resulting from invasion of the superficial portion of the body by exogenous pathogenic factors and are marked by sudden onset with short duration. Chief manifestations are intolerance to cold (or wind), fever, headache, nasal obstruction and superficial pulse. Interior syndromes may result from transmission of exogenous pathogenic factors to the interior if these are not eliminated in time, or they may be caused by direct attack on the zang-fu organs by exogenous pathogenic factors. Dysfunction of the zang-fu organs is also among the causes of interior syndromes. Generally speaking, the main sign