My daughter is severely allergic to peanuts, nuts, fish, shellfish and carries epipens in case of a reaction. She is also allergic to dust mites, indoor and outdoor mold, tree pollen, grass, ragweed, and has excercise-induced asthma. She has been complaining of bad stomach aches recently, and I was wondering if I should get her tested for more allergies? She often gets a bad stomach ache after drinking milk, even if it is lactose free. She has GERD and was tested for eosinophilic esophagitis, but doesn't have it (It's an allergic condition of the esophagus). Since she doesn't have eosinophilic esophagitis, her allergist is reluctant to test her for more allergies. Also, how effective is the blood test that is used to check for allergies? Any help would be appreciated. Thanks!