Talk to your pediatrician about whether your child falls into any of the high-risk categories and should not be vaccinated against chickenpox. It's very important to keep children calm, cool, and dry. Getting warm and sweating will only make the itching worse. Stay 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. Most people develop lifetime immunity to chickenpox after the first occurrence and never experience it again. The vaccination requires only one shot given at about one year of age. If an older person has not had chickenpox, the shot may be given at any time. There have been few significant adverse reactions to the chickenpox vaccine.