幼儿急疹是婴幼儿时期常见的一种发疹性热病,以突然持续高热3～4日、热退后全身出现皮疹为主要特征。本病在出疹后的诊断是很容易的,但在出疹前诊断则很困难。笔者经多年的临床观察,认为下列8项可作为本病早期诊断的参考。 1.发病于婴幼儿时期。1岁以下发病率约为90％,1～2岁发病率约为10％。男女发病无差异。 Emergency rash in infants and young children is a common rash fever, sudden high fever to continue for 3 to 4 days, the body heat back after the rash as the main feature. The diagnosis of the disease after the rash is easy, but it is difficult to diagnose before the rash. After years of clinical observation, I believe the following eight can be used as a reference for early diagnosis of the disease. 1. The incidence in infants and young children. The incidence of 1-year-old about 90%, 1 to 2-year-old incidence of about 10%. No difference between male and female incidence.