Patient: first fever on June 18, high temperature of about 39 degrees lasted for 3 days, after the fever subsided, a pediatric emergency rash (full-body rash) developed, and the rash receded after 4 or 5 days; on July 3, second fever, not super high 38 degrees, rash appeared again on the third day, came to your hospital on July 5, still diagnosed as early childhood emergency rash, on the 7th fever subsided, and the rash gradually subsided, but it did not go away on the arms; on July 9, a runny nose appeared, and at night it started On July 9, he had a runny fever and started to have a fever of 5 points at night. (The first two tests showed viral infections.) I would like to ask: 1) Is it possible for a child to have multiple episodes of emergency rash; 2) Is it possible that the child is allergic to the rash; 3) Is there any solution? Qian Qiufang, Department of Pediatric Dermatology, Shanghai Children’s Hospital: It is recommended to check the allergens. Your baby is probably allergic, his rash threshold is lower than the average baby, viral or bacterial infections can cause him to rash. Such a baby must be vaccinated when he is in good health.