|After having chickenpox, the chickenpox virus (varicella zoster) stays dormant in your body. In some children, it can become reactivated and cause shingles. The main symptoms of shingles is a rash on one side of the body that begins as a cluster of red bumps. These bumps then change into small blisters or vesicles that soon crust over. Your child may also feel itchy, but will otherwise be well. The rash usually continues to develop for a few days and then completely crust over and go away in about seven to ten days without treatment.
Children with shingles are contagious and can transmit chickenpox to others who aren't immune. Direct contact with the rash is necessary to be contagious, so he does not need to stay home from school if you can keep the rash completely covered.
You should call your doctor if the rash involves your child's eyes, becomes red and drains pus, or if it lasts more than two weeks.