JOJA, I don't think it's an allergic reaction, because Brandon has something that sounds the same, and all he has is soy formula, no solids yet.

Have you tried (I have no idea of the merits of this, but it worked when Brandon was rubbing the skin beneath his ears raw) getting a slice of fresh aloe vera and smearing the juice on the raw bits? Aloe vera dries and seals the area, even when the skin doesn't seal up itself. Or you could use a handheld blender and make a paste from fresh aloe vera. That will keep for a week in a closed container on the bench.