Allergic Rhinitis is the reaction of the immune system to allergens that are present in the air. This book on allergic rhinitis deals with the present progress of the treatment of allergic rhinitis. Allergy testing is a common method of determining the presence and effects of allergic rhinitis. Most of the topics introduced in this book cover new techniques for the treatment of allergic rhinitis. It also elucidates the various advanced diagnosis mechanisms. This book includes some of the vital pieces of work being conducted across the world, on various topics related to allergic rhinitis. It aims to equip students and experts with the advanced concepts in this area.