IGHE and eosinophilic esophagitis: Diagnosis of CMA includes taking a clinical history, deciding on appropriate testing, followed by an oral food challenge (OFC) for IgE-mediated CMA or a period of avoidance followed by reintroduction/OFC for non-IgE mediated cow’s milk allergies (FPIES, Eosinophilic Esophagitis [EoE], FPIAP).