Immune thrombocytopenia (ITP) in adults: Clinical manifestations and diagnosis - UpToDate

INTRODUCTION Immune thrombocytopenia (ITP, also called idiopathic thrombocytopenic purpura, immune thrombocytopenic purpura) is an acquired thrombocytopenia caused by autoantibodies against platelet antigens. It is one of the more common causes of thrombocytopenia in otherwise asymptomatic adults.