It is mainly found in people of an asian origin. Sickle Cell anaemia is a gentic disorder of the red blood Cells. The red Blood cells pass oxygen around the body. Normal red blood cells are a bi-concave shape, whereas people with sickle cell anaemia have some cells which are shaped like cresents. Due the abnormal shape, the deformed cells are less officient at carrying oxygen and get stuck in the blood vessels. This stops the other cells from passing oxygen around the body, causing the sufferer pain, particularly in the muscle joints. Sickle Cell can be inherited if two recessive genes are combined together.