What are haemoglobin SC disease (Hb SC) and Sickle Beta-Thalassaemia (Hb S-Thal)?
These conditions occur when someone inherits sickle haemoglobin (Hb S) from one of their parents and either haemoglobin C or Beta-Thalassaemia from the other parent. The symptoms of these two conditions are often similar to, but usually less severe than, those of sickle cell anaemia. People with Sickle Cell Anaemia, Sickle Beta -Thalassaemia and SC disease can have problems with sight, although this retinopathy is more likely to occur in Hb SC individuals.
