<unk>  <unk>  is a benign condition in which increased<unk>  hemoglobin (hemoglobin F, HbF) production continues well into adulthood, disregarding the normal shutoff point after which only adult-type hemoglobin should be produced.
Hereditary persistence of fetal hemoglobin
Paroxysmal nocturnal hemoglobinuria
Paroxysmal cold hemoglobinuria
Beta thalassemia
Neonatal alloimmune thrombocytopenia
Congenital hemolytic anemia
Gestational thrombocytopenia
Hemoglobin Lepore syndrome