Abstract: The goal of this pocket atlas of allergic diseases is to present “the pathophysiology, clinical features, and therapy of allergic diseases in a compact and understandable fashion.” The authors have accomplished this goal. The atlas starts with the basic principles of immunology, which cover the immune system, pathophysiology of allergic reactions, allergens, and types of allergic reactions. This is followed by general descriptions of diagnostic approaches to allergic diseases, and then treatment of these diseases. The last chapter deals with allergic diseases manifested in different organs or sites, including the skin, eyes, and gastrointestinal tract. It also covers allergic diseases in childhood. Each chapter is divided into a series of subjects, and each subject is presented on two pages, one being a brief description of the subject and the other being a diagram. The authors did a remarkable job in providing succinct and clear descriptions of the subjects, including some rather complicated ones, as well as simple and easily comprehensible diagrams. This book is particularly suited for specialists treating allergic diseases and should be valuable to allergy fellows as a succinct review of the pathophysiology as well as clinical aspects of allergic diseases, and to practicing physicians as a refresher of these subjects. Unlike the practice in the United States, the responsibility for treating patients with allergic diseases in many European countries falls to either dermatologists or otorhinolaryngologists. (In fact, two of the authors are dermatologists, while the other is an otorhinolaryngologist.) This book is well suited for dermatologists to become familiar with allergic diseases in general, particularly the chapters covering the basic principles of immunology and pathophysiology of allergic reactions. While the diagrams are in general very well prepared, one drawback of the design of the book is that many of the figures are not completely self-explanatory, and yet there are no figure legends. The idea is that the readers can understand the figures after reading the text. However, although the texts are succinct, they are not exactly figure legends, as they contain additional materials not presented in the diagrams. It is debatable whether the format used in the very popular review articles in the New England Journal of Medicine, which contain comprehensive figure legends, could be a better alternative. There are some minor errors and shortcomings in the book, which might be unavoidable in a compact book like this. Some illustrative clinical pictures are not clear (for example, it is not clear what the picture on panel B shows on p. 25). Some of the terms are not fully explained (see “atopic dermatitis diet,” p. 86). Some inclusions in the diagrams are not described in the text. These, though, are minor problems, and they do not detract from the usefulness of the book. Overall, this is a very well edited atlas and will appeal to allergists and dermatologists alike.