S.A.
I took my daughter to the hospital for the red spots on the face, they looked sore and raw. They were very puzzled and didn't know what it was. The only thing they could think of was possibly impantigo (sp?). They also gave me a prescription for Keflex. It will not hurt him to take it even if thats not what it is. I definitely would get a second opinion. My kids both had the coksaki (hand, foot and mouth) but they were blisters. My daughter only had it in her mouth and a few on her hand, but my son had only one spot in his mouth and a bunch on his hands and feet. But they were bigger blister-like spots.
How old is your son? Because I know both of my kids had little white spots on their faces within the first year and doctor told me it was just calcium deposites, that they would go away on their own and they did!!! hope that helps...lol