A Rare Presentation of Parvovirus Induced Pure Red Cell Aplasia in Elderly Male With Inclusion Body Myositis.

Pure red cell aplasia (PRCA) is a rare condition leading to erythroid bone marrow failure. Parvovirus is one of the rare causes of PRCA in older adults. We present a 73-year-old man on high dose prednisone who presented with rapid functional decline and shortness of breath and was found to have normocytic normochromic anemia with low reticulocyte counts. On further workup, he was found to have elevated immunoglobulin M (IgM) titer of parvovirus B-19 antibody. The patient was managed with supportive care with blood transfusion, hydration and had improvement in his symptoms.