Both my son and my daughter had several allergies. It was overwhelming - eggs, corn, wheat, gluten, dairy, sugars - etc. After some frustrating visits to an allergist and several pediatricians who kept given my kids more and more prescriptions, we found out about and ALLERGY ELIMINATION technique called NAET. (naet.com)
Instead of doing inconclusive blood and scratch tests which will only test for 2 different antibodies at most (usually histamine and a delayed response) while NAET tests for 8 different antibodies, and tests to see what organs react to the different antibodies, and then it treats the allergen by putting it against the body (in a container so it does not touch the skin) and use a combination of kinesiology, allopathy, western physiology, chiropractic (and more) techniques.
They use neuroscensory muscle testing to test for many more - but non invasive, and very comprehensive, and immediate results. My son who tested for allergies with 12 things at the allergist, tested for 25 things with NAET, and then one by one was able to eliminate them.
My daughter had - now 19 months - had similar problems with Milk and Wheat. We found out later they were celiac symptoms. But the pediatrician encouraged us to still give her milk based formula from the time she was 10 mo. She did not thrive - she had RUNS all the time, mucus in her stools,terrible diaper rashes and she hardly gained any weight. Well, she has since been treated for dairy and wheat - and is on a strong probiotic and D3 for absorption - and is doing SOOOOOO much better. For the first time in her life, she had solid stools about 3 weeks ago. The food looks digested in her diapers, whereas not much was looking digested at all, and the feces were acidic to her skin. But not anymore. It truly has changed our lives. She has started gaining weight again, and no more mucus in her diapers.
We go to Dr. Tam in Lombard who is FANTASTIC. I can't recommend him enough - he is so great. We found him through the NAET website (naet.com) you type in your zip and they tell you who is closest to you.
Good luck - its VERY great to know there IS something you can do about the sensitivies or allergies with your kids, instead of always wondering and feeling frustrated!