'Highly recommended' - ""Choice"". 'Recommended' - ""Library Journal"". Each year about half a million Americans are diagnosed with Parkinson's disease, with about 1.2 million people in the United States and Canada currently suffering from it. This chronic neurological disorder appears most commonly in people age 50 and over, though recent trends have shown the disease developing more often in those age 40 and under. Recent developments in Parkinson's disease research and the completion of the Human Genome Project have led to a better understanding of the role of genetics in causing Parkinson's disease. Since publication of the first edition of ""The Encyclopedia of Parkinson's Disease"", several studies have concluded, new studies have begun, and treatment approaches and recommendations have changed. Updated to reflect the latest research and trends in diagnosing and treating this disorder, this revised edition presents more than 650 entries explaining the complex issues and topics related to Parkinson's, including etiology, surgeries, research, medical terms, and much more. New information has been added on deep brain stimulation therapy, dopaminergic cell replacement, dopamine agonist therapy, breakthroughs in understanding the etiology and epidemiology of Parkinson's disease, and many other topics. Appendixes include a directory of organizations and resources as well as a directory of state Medicaid offices. Key topics include: Caregiving; Causes of Parkinson's disease; Living with Parkinson's disease; Long-term planning and care; Medications to treat Parkinson's disease; Mental health and emotional issues; Nutrition and diet; Related diseases; Symptoms of Parkinson's Disease; Treatment options for Parkinson's disease; and, more.