皮肤粘膜出血Mucocutaneoushemorrhage定义(Definition)临床表现Clinicalmanifestation瘀点petechia紫癜purpura瘀斑ecchymosis皮下血肿（hematoma）三个基本病因血管壁功能Capillarywallfunction血管壁功能异常Capillarywalldefect血管壁功能异常的临床表现过敏性紫癜血小板止血功能血小板异常Plateletabnormality血小板异常的临床表现凝血功能coagulationfaction凝血功能障碍Coagulationabnormality凝血功能障碍的临床表现伴随症状accompanyingsymptoms问诊要点（一）问诊要点（二）复习思考题临床表现Clinicalmanifestation瘀点petechia血管壁功能异常Capillarywalldefect血小板异常的临床表现凝血功能障碍Coagulationabnormality问诊要点（一）