A condition in which a child inherits the sickle cell gene mutation from only one parent.
Sickle cell disease is an inherited group of disorders in which red blood cells contort into a sickle shape. With sickle cell trait, a child receives the sickle cell gene mutation from only 1 parent, not both. This means the child usually doesn't have symptoms of the disease. But the defective gene can be passed on to future children.