If it is only on his face, it’s not chickenpox. The tiny white pus centers does resemble why she would call it chickenpox. But chickenpox is a viral infection so it would be other areas as well. Any new soap? I would put cortisone on it and watch it for a couple days. Even calamine lotion but don’t get it right by the mouth.
It was a bacterial infection
It took a while to respond to the topical medication but he did respond to it. I was surprized!!
Glad to hear he's on the mend!
Does he have any on his hands or feet? Could be hand foot mouth disease.