IGHE and acrodermatitis enteropathica: Lichenification in the antecubital areas (Figure 5a–c) in the three types of the elderly AE patients was as follows: localized, 5.3%; diffuse, 18.4%; around the folds, 39.5% in IgE-allergic AE, localized, 11.1%; diffuse,11.1%; around the folds, 33.3% in indeterminate-allergic AE, and localized, 23.1%; diffuse, none; and around the folds, 46.2% in non-IgE-allergic AE.