WE HAVE TRIED, in writing this book, to take a unique approach to Parkinson’s disease and one that we hope will provide a concise, practical and useful resource for the reader. The book adopts a ‘key facts’ method of explaining the disease, its diagnosis, differ- entiation from other conditions, assessment, and treatment. The chapters are laid out in an easy-to-read style, with bulleted points throughout and a wealth of helpful diagrams and photographs.