IGHE and food allergy: The European Academy of Allergy and Clinical Immunology (EAACI) Guidelines from 2018 on allergen immunotherapy of the IgE-mediated food allergy state that “OIT is recommended as a treatment option to increase threshold of reaction while on treatment in children with persistent cow's milk allergy, from around 4–5 years of age” and that “no recommendation can be made about OIT as a treatment option in adults with persistent cow's milk allergy”.80