Relapsed/refractory acquired thrombotic thrombocytopenic purpura in a patient with Sjögren syndrome

AbstractRationale:Thrombotic thrombocytopenic purpura (TTP) is a rare, fatal disorder which could be caused by autoimmune diseases. However, TTP secondary to Sjogren syndrome (SS) is extremely rare.Patient concerns:A 47-year- old woman with an 8-year history of SS was admitted due to skin ecchymosis