What type of rash? Eczema? Hives?
My DD is allergic to dairy, and one of her symptoms is eczema. It flares about 24 hours after she eats milk protein and can last several days. (It can up to 2 weeks for the eczema to completely clear.)
Are you keeping a food journal right now? I understand that life is overwhelming right now, but a food journal can help the allergist sort out if/what he(she) needs to test for (besides eggs, milk, peanuts). (You can stop the food journal after the allergist appmt, unless you notice symptoms continuing.)
What foods were included on the RAST? Only the Top 8 allergens? (milk, eggs, wheat, soy, peanuts, tree nuts, fish & shellfish)
Here is a sample food journal. Remember to write down everything he eats (even small amounts) and track the brand names too because ingredients vary.
http://www.webmd.com/allergies/guide/food-diary-helping-uncover-food-allergy-triggers
One more suggestion - take a picture of the rash to show the allergist, in case the rash clears before the apptmt.
I'm sorry if this feels like "one more thing" right now. Allergies (& asthma) can be overwhelming and feel like work. It does get better, and you do adjust.
Hugs,
Anne
