A brief, clear, and practical guide to the diagnosis and treatment of allergies and asthma. Beginning with an introduction of the immune system to understand the mechanisms of the four classes of hypersensitivity reactions and then demonstrating the most clinically relevant manifestations and treatments of allergies and asthma up to immunotherapy, this book is a must have for any student or practitioner who wants to learn the practical aspects of evaluating and treating allergic patients. Topics Include: • The World of Allergy • Four Classes of Hypersensitivity • Allergic Diseases of the Eye • Allergic Rhinitis • Urticaria and Angioedema • Atopic Dermatitis • Allergic Contact Dermatitis • Asthma • Food Allergy • Drug Allergy • Immunotherapy