If your child has painful sores in the mouth, make tea twice as strong as usual, add a little sugar, and use for a mouthwash or gargle. Keep the child quiet and cool. Sweating and becoming warm makes itching worse. Keep the child out of the sun. Give plenty of fluids.
Good choices are cool liquids such as water, milk, and apple juice.
Avoid salty foods and orange juice. Keep your child home from school or daycare for about 1 week. The child should stay away from babies and pregnant women. The child has sores in the eyes. The sores get bigger or have pus in them.