特发性血小板减少性紫癜(idiopathic thrombocytopenicpurpura,ITP)又称自身免疫性血小板减少性紫癜,是小儿最常见的出血性疾病。其主要临床特点是:皮肤黏膜自发性出血,血小板减少,骨髓巨核细胞数正常或增多,出血时间延长,血块收缩不良,束臂试验阳性。本病分为急性 Idiopathic thrombocytopenic purpura (idiopathic thrombocytopenic purpura, ITP), also known as autoimmune thrombocytopenic purpura, is the most common hemorrhagic disease in children. The main clinical features are: spontaneous skin and mucous membrane hemorrhage, thrombocytopenia, the normal or increased number of bone marrow megakaryocytes, prolonged bleeding, clot maladjustment, beam arm test was positive. The disease is divided into acute