Signs and Symptoms A rash is usually the first sign that something is wrong. But some children feel tired, or get a fever or stomachache 1 to 2 days before the rash starts. The rash starts out flat and red. It usually starts on the head, face, and back. But the rash can go anywhere.
Some children get small sores in their mouth, on their eyelids, or around the groin.
Soon the red spots turn into clear blisters that itch a lot. When your child scratches, the blisters break and make hard crusts. The crusts fall off in about 2 weeks. Your child will keep getting new sores for 2-6 days. Some children get chicken pox all over.