| Bone marrow failure |
| Congenital pure red cell aplasia |
| Blackfan Diamond anemia* |
| Aase syndrome* |
| Aquired pure red cell aplasia |
| Autoimmune processes |
| Infections |
| Drugs |
| Transient erythroblastopenia of childhood* |
| Malignancy |
| Bone marrow failure syndromes |
| Aplastic anemia |
| Fanconi's anemia |
| Others |
| Myelofibrosis |
| Renal failure |
| Vitamin D deficiency |
| Hypoparathyroidism |
| Bone diseases |
| Osteopetrosis |
| Impaired erythropoietin production |
| Hypothyroidism |
| Starvation |
| Chronic renal disease |
| Anemia of chronic disease |
| Disorders of erythroid maturation/ineffective erythropoiesis |
| Iron deficiency |
| Sideroblastic anemia |
| Lead toxicity |
| Megaloblastic anemia |
| Congenital dyserythropoietic anemias |
