Hello~I think seeing an allergist or dermatologist would be the best way to tell what is going on and what the bumps are, they are trained in in all sorts of allergies and skin disorders and their reactions. I would say they were a form of rash, but without any pictures or other info, I just don't know.
I think the reason no one is replying, they are like me, with just the amount of info you have given and no picture, we just don't know, plus none of us are doctors, and if your PCP is unsure, you can imagine how unsure we are.
I hope you can get the answers you are looking for. God bless you.
Why is no one responding!?? Please reply people.