Asthma is a very serious, widespread, and growing problem in the U.S. Asthma affects over 24 million Americans, and its prevalence has increased 12% in the last decade. This book is designed to be a comprehensive background on asthma for the general public. The latest developments in the understanding of asthma and its relationships to allergies and other conditions are presented. A broad range of treatments for asthma are available or under development. The book is published by Mercury Learning and Information, and is available in paperback or as an e-book.