Expectant parents may be familiar with the professional term \”hemolytic disease of the newborn\”. But under what circumstances will a baby suffer from hemolytic disease of the newborn? The editor will reveal the answer to you right away. Among the Han population in my country, the incidence rate of neonatal hemolysis caused by ABO blood type incompatibility is the highest. Clinically, more than 90% occur in pregnant mothers with type O blood and husbands with type A, B or AB blood. Hemolytic disease of the newborn is also known as \”hemolytic disease of maternal and fetal blood group incompatibility\”. Hemolytic disease in children. How does hemolysis occur? Under normal circumstances, there is a natural barrier between the pregnant mother and the fetus.