IGHE and proctocolitis: Allergic proctocolitis (also referred to as allergic eosinophilic proctocolitis, dietary protein-induced proctocolitis, food protein-induced allergic proctocolitis, dietary protein-induced proctitis/proctocolitis, dietary protein-induced colitis, breast-milk-induced proctocolitis, eosinophilic proctitis, and benign dietary protein proctitis) represents the milder end of the non-IgE-mediated food hypersensitivity spectrum (Fig. 1).