<unk>  is active erythropoiesis with premature death of red blood cells, a decreased output of RBCs from the bone marrow, and, consequently, anemia. It is a condition characterised by the presence or abundance of dysfunctional progenitor cells.
Ineffective erythropoiesis
Dyserythropoiesis
Myeloproliferative neoplasm
Erythrocyte fragility
Iatrogenic anemia
Intravascular hemolysis
Mechanical hemolytic anemia
Iron metabolism disorder