恙虫病是由恙虫病立克次体引起的一种自然疫源性疾病。我县并非少见。1999年～2000年7月我县共收住48例,入院时误诊40例,误诊率达83.3％。为提高对本病的认识,现将误诊原因分析如下。 1.临床资料 1.1诊断标准(1)有野外活动史;(2)突然发热并出现特异性焦痂或溃疡、淋巴结肿大;(3)外斐氏反应OX_K 1:180以上。 Scrub typhus is a natural foci caused by Rickettsia tsutsugamushi. My county is not uncommon. From 1999 to July 2000, 48 cases were admitted in our county, 40 cases were misdiagnosed on admission, the rate of misdiagnosis was 83.3%. To raise awareness of the disease, the misdiagnosis is now analyzed as follows. 1. clinical data 1.1 diagnostic criteria (1) a history of field activity; (2) a sudden fever and the emergence of specific eschar or ulcer, lymph node enlargement; (3) external Peijier reaction OX_K 1: 180 or more.