Children with sickle cell disease may experience frequent painful episodes. This, together with the traumatic experiences during a hospitalization, can lead to the development of posttraumatic stress reactions. As the stress can trigger painful episodes (pain crisis) in children with sickle cell disease, the investigators think that treating these stress symptoms can reduce the pain-related problems in their lives. Eye Movement Desensitization and Reprocessing (EMDR) is proven to be an effective trauma treatment for posttraumatic stress disorder. Research studies show that EMDR can reduce pain in adults. The investigators want to study now if EMDR effective is in reducing pain-related problems in children with sickle cell disease.