Check for the Pox

"Chickenpox is a very contagious disease caused by the varicella-zoster virus (VZV). It causes a blister-like rash, itching, tiredness, and fever. The rash appears first on the stomach, back and face and then spreads over the entire body causing between 250 and 500 itchy blisters…"

https://www.cdc.gov/chickenpox/index.html