Hydrops fetalis is a condition where there is severe swelling in two or more parts of the baby's body in the womb or a newborn, for example in the lung and heart organs. This condition includes dangerous conditions that can threaten the lives of infants. Several countries in Southeast Asia, including Indonesia, have higher rates of fetal hydrops cases compared to countries in Europe and America. This is caused by the high frequency of cases of alpha thalassemia, a disease that affects the emergence of fetal hydrops. Types of Fetal Hydrops According to the Causes There are two types of fetal hydrops, namely immune and non-immune. Both have different causes. The following is the explanation: Immune fetal hydrops This condition occurs due to rhesus mismatch, which is when the rhesus of a pregnant mother's blood is negative and rhesus of the baby's blood in the womb is positive. This discrepancy makes the immune system of the body of pregnant women consider the baby...