This volume outlines and examines current understanding of botulinum toxin and its various therapeutic applications. The editors explore how this novel compound fits into a wide variety of treatment algorithms across medical subspecialties. Each chapter focuses on a particular symptom and explains how botulinum toxin is currently used for treatment. The chapter authors are all leaders in their fields and are respected for their progressive approach to treatment. Coverage also examines questions of immunity and explores economic issues and attempts to forecast future directions for this novel and somewhat mysterious drug. This book encourages responsible research into new and novel uses of botulinum toxin.