This sourcebook offers a clear and comprehensive introduction to one of the most common psychiatric disorders, Obsessive-Compulsive Disorder (OCD); a condition that results in intrusive, irrational thoughts and/or repetitive, illogical physical or mental actions.

Written by one of the world's most experienced therapists in treating OCD, this volume explores the disorder's history, symptoms, incidence, and development, alongside its personal, societal, and economic impact. Chapters examine common obsessions such as contamination, safety, and symmetry, as well as compulsions including counting, tapping, excessive cleaning, arranging, and hoarding, or the need the do the "right" thing.

The text also addresses theory, research, and treatments, offering insights and case studies illustrating how the disorder displays in society, at work, and in relationships. A glossary of terms, recommended readings, and a list of helpful resources and organisations are included.

The Health and Psychology Sourcebooks series is ideal for undergraduate students, practitioners, and general readers interested in learning more about a range of physical, psychological and environmental health conditions.