幼儿急疹也叫婴儿玫瑰疹，主要发生于婴幼儿。一般认为本病是由病毒引起的，一年四季均可发病，以冬季为多见。病例大多数是孤立发生的，在托幼园所偶有流行，病愈后不会复发。此病的潜伏期约为１０～１５天，患儿突然发高烧，体温可达３９°C～４０°C甚至更高，同时伴有胃口 Infantile rash also known as baby rosea, mainly occurs in infants and young children. Generally believed that the disease is caused by a virus, all year round can be onset, more common in winter. Most cases occur in isolation, occasionally popular in care nursery, will not relapse after the cure. The incubation period of the disease is about 10 to 15 days, children with sudden onset of fever, body temperature up to 39 ° C ~ 40 ° C or even higher, accompanied by appetite