特发性血小板减少性紫癜（ITP）是因免疫机制使血小板破坏增多的临床综合征。该例患者因牙龈出血就诊，口腔主要表现为多处血疱，伴有全身多处瘀斑，提示在口腔诊疗过程应予以注意。%Idiopathic thrombocytopenic purpura (ITP)is the syndrome with platelet destruction increase through immunologic mechanism. In this case,the patient's main performance was oral mucosal bloody bulla with the ecchymosis on whole body.
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