My DD occasionally has red bumps on her face that fade rather quickly. Sometimes they are there when she wakes up, sometimes after she eats, whether we have introduced a new food or not. I have attributed them in the past to excess saliva and now she has prefered to stomach sleep and maybe it was that. My doctor says its could be winter dry skin. Now she also seems to have a mild diaper rash.
What detriment am I doing if this is a mild food allergy and I am continuing to give her the food causing it?