Pittsylvania County Service Authority PO BOX 209 Blairs, VA 24527-0209: Phone: 434-836-7135 Fax: 434-836-7139 Emergency Contact: 434-432-7931. Email Address: pcsa405@comcast.net Physical Address 405 R & L Smith Drive Danville, VA 24540 Click here for directions
Hemolytic disease of the newborn, also known as hemolytic disease of the fetus and newborn, HDN, HDFN, or erythroblastosis fetalis, is an alloimmune condition that develops in a fetus, when the IgG molecules (one of the five main types of antibodies) produced by the mother pass through the placenta.
A French midwife was the first to report hemolytic disease of the newborn (HDN) in a set of twins in 1609. In 1932, Diamond and colleagues described the relationship among fetal hydrops, jaundice, anemia, and erythroblasts in the circulation, a condition later called erythroblastosis fetalis.