The authors experienced 29 cases of Henoch-Schoenlein purpuras during the period from April 1986 to April 1991.
The summaries of clinical and laboratory observations are as follows.
1) Male to female ratio was 2.6 : 1 and the age of peak incidence was among 4 to 7 years of age.
2) In seasonal incidence, the case was most frequent during spring(45 % ).
3) The previous history of abdominal pain was noted in 11 cases(65 %) and 6 cases(35 %) showed infection of the upper respiratory tract.
4) The main clinical manifestations were skin rash(100 % ), abdominal symptoms(83 % ), joint manifestations(62 %), and renal involvement(24 %).
5) The most commonly observed manifestations(23 cases, 80 %) of the skin were petechiae, purpuras, and ecchymosis.
6) The abdominal pain was the most common manifestation of gastrointestinal symptoms (23 cases, 80 % ).
7) The knee was the most commonly involved joint(59 %).
8) The renal involvement was observed in 7 cases(24 %), and the main manifestations of renal involvements were microscopic hematuria and proteinuria.
9) Leukocytosis over 10,000/mm´ was was showed in 62 % of cases, and ESR over 20 mm/hr was in 28 % of cases but blood clotting studies were mostly within normal ranges.
10) ASO titer over 166 Todd units was observed in 35 % of cases and C-reactivie protein was positive in 35 % of cases.
11) Most clinical manifestations subsided within 4 weeks.
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