Neonatal hemochromatosis is a disease in which too much iron builds up inthe body. In this form of hemochromatosis the iron overload begins before birth. This disease tends to progress rapidly and is characterized by liver damage that is apparent at birth or in the first day of life. There are a number of other forms of hemochromatosis. To learn more about these other forms click on the disease names listed below: Hemochromatosis type 1 Hemochromatosis type 2 Hemochromatosis type 3 Hemochromatosis type 4. The disease is MONDO_0009275 (neonatal hemochromatosis).