Hello, Thanks for trusting Healthcaremagic! I have gone through your query and I can understand your concerns. Ocuvir is the brand name of antviral drug called acyclovir. It is a relatively safer drugs and side effects are minimal. Chicken pox is a self limiting disease and symptoms will subside with in a week even with out treatment. Acyclovir(ocuvir) is the drug of choice for chicken pox and he can continue the same with out any fear. It is a costly drug that might me the reason why government doctors wont prefer the drug. Avil tab is given for itching. Drink plenty of water to keep him re hydrated. Keep in mind that chicken pox is a contagious disease, so isolation of the patient is important. Hope I have answered your query. Wishing you good health. Regards. Dr.Shinas