Dual Autoimmunity: Evans Syndrome and Multiple Sclerosis

Evans syndrome (ES) is an uncommon autoimmune disorder associated with autoimmune hemolytic anemia and immune thrombocytopenia (ITP). Patients generally present with petechiae, purpura, pallor, and fatigue. Diagnostic criteria include a positive direct antiglobulin test, reticulocytosis, decreased haptoglobin, and elevated indirect bilirubin and lactate dehydrogenase levels. ES can be associated with other autoimmune conditions, including systemic lupus erythematosus, rheumatoid arthritis, and autoimmune hepatitis. However, the co-occurrence of ES and multiple sclerosis (MS) is exceedingly rare in the scientific literature. We report the case of a 46-year-old female patient with MS and a previous diagnosis of ITP. Further diagnostic workup confirmed ES. This report highlights the need to consider ES in patients with treatment-resistant ITP. Additionally, it discusses MS as a co-occurring autoimmune condition with ES that warrants further investigation within the broader spectrum of autoimmune disorders.