病例患者，男，13岁。因间断皮肤出血点3年入院。3年前无明显诱因出现皮肤出血点，偶伴有鼻咽，每次出血量不多用棉球填塞后可止血。病后曾在几家医院诊治，曾做骨髓检查诊断为“血小板减少性紫廉”，予止血药、升血小板药物治疗，具体用药不祥。服药期间皮肤出血点消退，停药 Case patients, male, 13 years old. Due to intermittent skin bleeding point 3 years admission. 3 years ago, there was no obvious incentive to skin bleeding point, even with the nasopharynx, each bleeding is not much use of cotton balls to stop bleeding. After the disease in several hospitals for treatment, had done bone marrow examination diagnosed as “thrombocytopenic”, to hemostatic drugs, or platelet drug treatment, the specific drug ominous. Skin bleeding during treatment subsided, withdrawal