1987年3—5月份我院治疗32例季节性紫癜。男20例,女12例;1～2岁10例,～6岁10例,～9岁12例;城市24例,农村8例;临床表现:全身性紫癜12例,四肢紫癜16例,下肢紫癜4例,均无其他症状和体征,实验室检查:除5例有轻度贫血外,血红蛋白、红细胞、白细胞、血小板、出凝血时间均在正常范围;免疫学检查IgA、IgG 均降低,IgM 正常。检查骨骨髓象及毛细血管脆性各12例,均正常,诊断标准:(1)发病前 March-May 1987 in our hospital for treatment of 32 cases of seasonal purpura. 20 males and 12 females; 10 cases of 1 to 2 years old, 10 cases of ~ 6 years old, 12 cases of ~ 9 years old; 24 cases of urban and 8 cases of rural areas; Clinical manifestations: 12 cases of systemic purpura, 16 cases of purpura extremities, Purpura in 4 cases, no other symptoms and signs, laboratory tests: In addition to mild anemia in 5 cases, hemoglobin, red blood cells, white blood cells, platelets, clotting time are in the normal range; immunological examination IgA, IgG were reduced, IgM normal. Check bone marrow and capillary fragility in 12 cases, all normal, diagnostic criteria: (1) prior to onset