Parkinson's disease (PD) is is the second most common neurodegenerative disease. As the population of the industrialized world ages the impact of this disease on clinical neurology will expand. The growing literature regarding PD reflects this phenomenon. The time is now appropriate for a comprehensive text on PD that provides the reader with an up-to-date review on the multiple aspects of the disease and puts them into perspective. The scholarly contributions from many of the leading researchers in the field has made such a text a reality. This book will be useful to movement disorder specialists, general neurologists and neurology residents, gerontologists, neurosurgeons, neuropsychologists, and neuroscience researchers. The text provides both theoretical and practical approaches to PD.This book is organized to provide a comprehensive view of PD. Sections cover clinical aspects, behavioral and psychiatric manifestations, pathology and neurochemistry, diagnosis, etiology and pathogenesis, drugs, treatment issues, surgery, subtypes of parkinsonism, and social issues.