Children with early fever, fever after the body appears red rash, mainly consider the following reasons: 1, according to the age of the child, if the fever is under 1.5 years old first 3-5 days, the body temperature is normal after the body appears red rash, consider the possibility of early childhood emergency rash is greater, do not need special treatment, generally 1-2 days later will naturally subside. If the child is after 1.5 years old and also has a red rash after the fever, consider the possibility of viral infection. 2. Topical anti-allergy drugs can be used.