由药物引起的溶血性贫血大致可分为两类。其一是由后天的免疫学机制所引起的,即由药物作为半抗原,以抗原作用而产生抗体,或者由改变抗体产生组织的机制产生抗体而引起的药物性免疫性溶血性贫血。另一种是先天就有的红细胞代谢上的缺陷,当受到某种药物作用时,由于这种代谢上的缺陷所引起的溶血。后者还有两种:由血红蛋白异常所引起的不稳定血红蛋白症(unstable Hemolytic anemia caused by the drug can be divided into two categories. One is caused by acquired immunological mechanisms, namely, drug-induced immune hemolytic anemia caused by the drug acting as a hapten, an antibody produced by an antigen, or an antibody produced by an antibody-altering mechanism. The other is inherent in the metabolic defects of red blood cells, when subjected to certain drugs, due to this metabolic defects caused by hemolysis. There are two kinds of the latter: unstable hemoglobin caused by hemoglobin abnormalities