Parkinson's disease is a debilitating neurodegenerative, condition with symptoms that can significantly impact daily functioning and quality of life. However, our understanding of Parkinson's disease has advanced alongside extensive research and development, leading to improved detection and more effective treatment options. No researcher or practitioner managing patients with Parkinson's disease should be without this established one stop essential resource. Rajes Pahwa, MD is Leverne and Joyce Rider Professor of Neurology and Director of the Parkinson's Disease and Movement Disorder Center, University of Kansas Medical Center, and Co-editor in Chief, International Journal of Neuroscience. Kelly E. Lyons, PhD is Research Professor of Neurology and Director of Research and Education at the Parkinson's Disease and Movement Disorder Center, University of Kansas Medical Center, Co-editor in Chief of the International Journal of Neuroscience and President of the International Essential Tremor Foundation. Book jacket.