Sickle Cell Disease: A Potential Cause of Immune Thrombocytopenia.

Sickle cell anemia (SCA) is one of the known hemoglobinopathies that result in red blood cell (RBC) destruction, among other complications. There are factors that make SCA an environment for autoimmune disease (AID). They include chronic inflammation, immune-mediated processes involved in SCA complications, and susceptibility to infections. Furthermore, immune thrombocytopenia (ITP) is a complex disorder characterized by immune imbalance that results in platelet destruction. We report a case of a 20-year-old patient with SCA presenting with a vaso-occlusive crisis (VOC) and unexplained thrombocytopenia. After ruling out secondary causes of the latter condition, the patient was challenged with steroid therapy. Interestingly, he showed a dramatic response in platelet count. This report emphasizes the potential role of SCA in the development of ITP and encourages further studies to explore the underlying immunological mechanisms.