Different allergies tend to make the animal react in different areas, which we'll cover shortly, but in general itchy skin is the most common symptom of all allergies in pets. (acupetvetcare.com)
Does she have other symptoms of allergy, such as rashes, diarrhea, constipation or belly pain? (easybabylife.com)
There is also the chance that your child will test negative to dairy on an allergy test, yet still show symptoms of an allergy. (home.allergicchild.com)