many persons are allergic to animal protein if you are allergic to diary then also you will have milk allergy as milk is also animal proteins and in some patients animal proteins are not competible with human proteins withdraw all milk and diary proteins and take symptomatic treatment get blood serum test for specific antibodies for milk you can also see for wheat or potato to see if any affect now a das we are doing sublingual immunotherapy and we are quiet succesful in that in uk researchers are treating milk and diary and other food allergies by sublingual immunotherapy and this is very successful if you want i can tell the procedure as we are doing for long time and has big success