This is an inherited blood condition. Blood has many functions including carrying oxygen around the body. Blood is red because of the presence of a protein called haemoglobin (Hb).
People, who have sickle cell disease, have inherited two unusual haemoglobin genes, at least one of which is a sickle haemoglobin gene. The commonest form is sickle cell anaemia when the individual inherits two sickle haemoglobin genes (HbSS) – one from each parent.
More information for parents and visitors on sickle cell anaemia