Rash after fever for the second time?

Alexandrea • Wife. Momma 10.24.18. 💙 08.10.20. 💗

Hey guys. I was wondering if anyone has seen this on their little one before. My son had a fever for a few days and we took him in to the dr. She said she thought he had stomach virus since he would eat, but now his fever is down and he has this rash. This is the 2nd time it’s happen and I have no answers as to why. Hoping someone could help out! Thank you