特发性血小板减少性紫癜(Idiopathic thrombocytopaenic purpura,ITP)是临床上最常见的出血性疾病,临床以皮肤黏膜或内脏出血为主要表现,特点为四肢肌肤散布瘀点、瘀斑,或波及全身,重症患者伴关节疼痛或腹痛,便血、吐血等,主要病因为血循环中存在抗血小板抗体,使血小板破坏过多,引起紫癜。目前认为细菌或病毒感染与ITP的发病有密切关系,同时免疫因素也是ITP发病的一个重 Idiopathic thrombocytopaenic purpura (ITP) is the most common hemorrhagic disease in clinical practice. Its main manifestations are mucocutaneous or visceral hemorrhage. It is characterized by stasis, ecchymosis, or systemic spread of limbs, Severe patients with joint pain or abdominal pain, hematochezia, hematemesis, the main cause is the presence of anti-platelet antibodies in the blood circulation, so that excessive destruction of platelets, causing purpura. Now that the bacterial or viral infection and the incidence of ITP are closely related, while immune factors is also a heavy ITP