Maybe I am allergy paranoid, maybe not, I don't know anymore.

When I started introing foods I was always super obserservant of reactions and I kept an accurate food diary. Then I met a bunch of friends who were much more relaxed about the whole thing and my son was getting older so I relaxed. When he turned a year I stopped keeping track of everything.
He just started being really into food. He eats a morning and and evening puree, and fingerfoods throughout the day. He still nuses a lot.

Well, now he's 14 mo old and he has had a rash around his mouth for a month. The rash around is mouth consists of colorless bumps, and scaley patches that are slightly pinker than his surrounding skin. This morning I noticed little colorless bumps on his legs and arms.

So I don't know where to start. Do I eliminate all food and seperate his clothing when I wash it? Do I start with just eliminating certain foods? Do I just let this slide and not worry about it as a possible allergy and treat it topically? If I do eliminate foods do I also treat the thing topically?

I just need direction. Any advice appreciated.