Rash in Children

If your child has a rash that appeared a day or two after getting over a fever, he probably has roseola, a mild illness caused by a virus. The rash typically consists of flat, red spots. The spots turn white if your press on them and may also have a "halo" around them. If your child has roseola, he may also have swollen glands, crankiness, and some diarrhea.