Case Studies in Allergic Disorders is designed for undergraduate and graduate students in immunology, medical students, and resident physicians. It describes the basic cellular and molecular mechanisms involved in the pathogenesis of commonly occurring allergic diseases and introduces the rationale for targeted treatment of allergy. Replicating the successful approach of Case Studies in Immunology, the book presents mechanisms of hypersensitivity through a selection of clinical cases that reinforce and extend the basic science. The cases are largely drawn from the records of Children’s Hospital Boston. Linking the discussion of pathogenesis to actual clinical presentation establishes important connections between the bench and bedside. The book can be used as either a stand-alone text or asa companion to Janeway’s Immunobiology and The Immune System.