Acute rash in toddlers usually shows symptoms of fever and rash, and some children may show other inflammatory manifestations. 1. Fever: children may have a sudden high fever, even up to 40℃, which may be accompanied by convulsions, convulsions, loss of appetite, etc., but the mental state is usually normal. Some children may have gastrointestinal discomfort, hematuria, scleritis and other symptoms. 2. Rash: After about 4 days of fever, the body temperature will suddenly drop to normal within 24 hours and a rash will appear. It is usually a red maculopapular rash that is not clustered or dispersed and may first appear on the trunk and face and then extend to the proximal extremities. The rash usually lasts for about 2 days and can subside spontaneously without any residual pigmentation or skin changes. 3. Other inflammatory manifestations: e.g. swollen lymph nodes in the neck, runny nose, swollen eyes and other manifestations. If the toddler has an emergency rash, parents are advised to take their children to the hospital in time and take effective treatment under the guidance of the doctor.