Cow's Milk Allergy (CMA) is one of the most common food allergies presenting in infancy. Cow's Milk Allergy occurs when the immune system reacts inappropriately to a protein in cow's milk. The allergic response can affect multiple systems and present with symptoms including gastrointestinal, respiratory and skin, and can be difficult to identify and accurately diagnose. Learn more about the appropriate diagnosis and management of CMA below.