Allergic stomatitis.

There are basically two types of hypersensitivity reactions involved in allergic stomatitis, type I immediate hypersensitivity, and type IV delayed hypersensitivity. The allergic stomatitides may present with clinical appearances that mimic classic oral vesiculobullous and ulcerative lesions. Differential diagnosis from specific mucosal diseases is important in the treatment of oral allergy. Precise history taking and the elimination of the causative agents will be necessary. The mechanisms involved in oral reactions, etiologic factors, clinical manifestations, and treatment of allergic stomatitis will be described and discussed in this article.