Based on the XIVth International Congress on Parkinson's Disease, this volume provides a comprehensive account of the state of the art in the study and treatment of Parkinson's disease and related disorders. The book reviews the latest advances in all aspects of research and patient care, including neurobiology, genetics, epidemiology, PET and SPECT imaging, pharmacotherapy, surgical treatment, and management of comorbid and related conditions. Coverage includes current recommendations for medical treatment of early and advanced Parkinson's disease, a detailed assessment of the benefits of deep brain stimulation, and guidelines for management of sleep disorders, depression, psychosis, and dementia in Parkinson's disease.