Hi A.-
Not sure if this is convenient for you, but I have lots of experience with Associated Allergists. They're on Central in Arlington Hts ###-###-####), and on the grounds of Good Shepherd in Barrington ###-###-####).
I have been going there for over 14 years for my own allergy treatment. My two girls did not seem to get my allergy genes, but my #3 child did. My son Casey (4.5 yrs old) sees Dr. Brown when available. He's not in those offices very frequently, so it's harder to get in to see him. Dr. Brown is a young Dr, great with kids. When I can't get him, I take my son to my Dr. which is Dr. Hart. He's in his late 50's - very kind, but not as "pediatric" as Dr. Brown. It's easy for me to take my son to see Dr. Hart however, since he's my allergist, and I already have a relationship with him.
They'll determine what kind of testing to do. Casey has had blood tests, and skin tests mostly. He's had injections in his upper arm once or twice, which actually went fine. They advise using some numbing cream before you come in for injections, and then the kids really can't feel anything. The nurses there are sooo wonderful- they are all so sweet to the kids.
Casey is deathly allergic to wheat. He's also allergic to some other foods, animals, and the environmental standards like grass, trees, mold, etc. Just like Mom, unfortunately.
Best of luck to you.
A.