Anxiety sensitivity (AS) is the fear of anxiety sensations, which arises from beliefs that these sensations have harmful somatic, social or psychological consequences. Over the past decade, AS has attracted a great deal of attention from researchers and clinicians with more than 100 peer-reviewed journal articles published. In addition, AS has been the subject of numerous symposia, papers and posters at professional conventions. Why this growing interest? Theory and research suggest that AS plays an important role in the aetiology and maintenance of many forms of psychopathology, including anxiety disorders, depression, chronic pain and substance abuse. Bringing together experts from a variety of different areas, this volume offers the first comprehensive review of AS - its conceptual foundations, assessment, causes, consequences and treatment - and points new directions for future work. It may be of value to clinicians, researchers, students and trainees in all mental health professions.