My 1 year-old was diagnosed w chicken pox.its been >1mth now n new rashes r growing.y?shudnt it resolve in 3 wks?can antihistamine b given for itch?

I'm concerned.: There are three possibilities. (1) it's not chicken pox. (2) it's chicken pox but your child's immune system isn't working correctly due to a congenital immune defect. (3) it was chicken pox (aka varicella) but there is a secondary infection. The most severe of these are caused by the same streptococcus ("strep") that causes sore throats. See your doctor.