<unk>  is a blood condition where  body produces enough iron but is unable to put it into the haemoglobin. A sideroblast is a cell in which there is an abnormally large build up or iron.<unk>  is a rare disorder. Some forms of the condition are X-linked. Some forms, usually seen in adults, are acquired by exposure to alcohol, lead or drugs.
Sideroblastic anemia
Familial erythrocytosis
Hereditary spherocytosis
Hereditary elliptocytosis
Aplastic anemia
Congenital hemolytic anemia
Thalassemia
Transient erythroblastopenia of childhood