On the night before I gave birth to my third child, I broke out in a very severe itchy hive-like rash all over my belly which spread to arms, legs, butt, face, back. When my son was 3 weeks old he was hospitalized for severe anemia which nearly led to a blood transfusion. His blood levels returned to normal on their own however, and the cause was never known. Is it possible that whatever caused the rash led to his anemia? Does this sound like fifth's disease?