Hi
What is the age of the child? For
chicken pox you can give oral antihistamine to decrease the itching and you can apply plain calamine containing lotions over skin for soothing and to decease the itching. If there is fever you can give Tylenol every 6th hourly in prescribed dosage. And nails of the child should be trimmed to prevent scratching and secondary bacterial infection. There is antiviral drug
Acyclovir is available specific for
chickenpox virus and it can be give to your child after consulting your
Pediatrician.