Rhinitis is the most common immunological disorder in man, with a marked effect on quality of life and significant co-morbid associations. Consequently, it is necessary to take rhinitis seriously and to attempt as precise a diagnosis as possible, if treatment is to be successful. This comprehensive text provides information on rhinitis, including such topics as the importance of rhinitis and its causes. It covers the most up-to-date methods of diagnosis such as airway testing, mucociliary clearance, imaging and more. Written by internationally respected experts, Investigative Rhinology provides a full and up-to-date guide to the investigations to be undertaken.