Objective To explore the relation between plasma homocysteine(HCY) and TCM syndrome types in schizophrenia syndromes(depressed psychosis).Methods: 70 cases of Schizophrenia syndromes(depressed psychosis) were devided into following 4 syndromes: Phlegm and qi stagnation syndrome、 Deficiency of qi deficiency and phlegm syndrome、 syndrome of deficiency of both heart and spleen、 syndrome of hyperactivity of fire due to yin deficiency, Plasma homocysteine (HCY) in the patients of SCH and the normal persons were detected with enzyme-linked imm...