An inherited disease cannot be “caught” from another person. It is passed down from parent to child in their genes, like hair color and eye color. It happens mostly in African Americans.
A protein in red blood cells called hemoglobin tells the cells what shape to take.
Sickled cells are sticky and cannot flow easily through blood vessels. They break open easily, and this causes the overall level of hemoglobin in the body to be low.
Since the blood touches all parts of the body, complications of sickle cell disease can happen anywhere in the body.