When the body reacts against harmless proteins found in foods, then Food Allergy happens. The reaction usually happens immeadiatly after a food is eaten. Food allergy reactions can vary from mild to severe. Because there are many things that can be confused with food allergies, it is important for parents to know the difference. Allergies may cause by eating the food which the body can’t agree to the food. Symptoms will be likely to skin or stomach they are, Hives (red spots that look like mosquito bites), Itchy skin rashes (eczema, also called atopic dermatitis), Swelling, breathing problems, Sneezing, Wheezing, Throat tightness and stomach problems are, Nausea, Vomiting, Diarrhoea, Circulation symptoms, Pale skin, Light-headedness, Loss of consciousness. They are two types of tests to allergy in babies skin test or blood test.