Got Milk Allergy? 1.the skin — in the form of red, bumpy rashes (hives), ECZEMA, or redness and swelling around the mouth 2.the gastrointestinal tract — in the form of belly cramps, nausea, vomiting, etc. 3.the respiratory tract — symptoms can range from a runny nose, itchy, watery eyes, and sneezing to the triggering of asthma with coughing and wheezing