Below is an instruction from Human. Write a response.
    ### Instruction:
    What is (are) Neonatal hemochromatosis ?
    ### Response:
    Neonatal hemochromatosis is a disease in which too much iron builds up in the 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.
    