A normocytic normochromic anaemia is a morphologic diagnosis made on a peripheral blood film and complete blood count values. This can be due to a fall in the number of circulating red cells and is often due to blood loss (haemorrhage) or red cell breakdown (haemolysis).
Haemorrhage may be from the gastrointestinal or genitourinary tract secondary to diseases affecting these systems or due to congenital bleeding disorders like haemophilia or von Willebrand disease. Acute haemolysis may be due to autoimmune haemolytic anaemia (autoimmune diseases or drug-related or idiopathic), haemoglobinopathies, red cell enzymopathies, acquired platelet disorders, HUS, DIC etc. It may also be due to hypoplastic / aplastic anaemia or a myelodysplastic syndrome.
You have to treat the underlying cause of the anaemia and not anaemia alone.