Clinical medicine often classifies the causes of anemia from the pathogenesis and causes of anemia:
(A) erythropoiesis-reducing anemia, hematopoietic cells, bone marrow hematopoietic microenvironment and hematopoietic materials abnormally affect erythropoiesis, which can form erythropoiesis-reducing anemia.
(2) hemolytic anemia (HA), red blood cell destruction of anemia
(3) Hemorrhagic anemia is divided into acute and chronic according to the rate of blood loss, and chronic hemorrhagic anemia is often associated with iron deficiency anemia. Can be divided into coagulopathy (such as idiopathic thrombocytopenic purpura, hemophilia and severe liver disease) and non-clotting diseases (such as trauma, tumors, tuberculosis, bronchiectasis, peptic ulcer, sputum and Two types of gynecological diseases, etc.).