What does this mean?
Aplastic anaemia is a rare and very serious form of anaemia in which there is a decrease in the quantity of blood-forming cells in the bone marrow. This then causes impairment of all blood cell production.
This condition can be present from birth or may develop in later life.
In most cases the bone marrow failure is permanent. However, in some cases (e.g. due to drug or radiation treatment or to infection) it is temporary. Temporary bone marrow failure would not be covered by the definition.