Getting allergy tests can be very helpful. An allergy scratch test is not particularly helpful for food allergies.
Allergy Relief Products
Allergy medication can help alleviate allergy symptoms over the short term. You can buy an antihistamine over the counter, which helps to reduce certain allergy symptoms.
Here are a few otc antihistamines for you to consider:
Alavert allergy products help to reduce allergy symptoms such as sneezing, runny nose, itching nose … it provides eyes allergy relief.
Claratin (loratidine) can also be used to eliminate the allergy symptoms mentioned above, and allergy hives.
Wikipedia on allergies