This three-volume collection of essays provides a comprehensive review of state-of-the-art clinical phenomenology, mechanisms, and treatment strategies for the major dementias-particularly the neuropsychiatric disorders involved.Dementia presents a very significant problem: a recent study by Alzheimer's Disease International estimates that the number of people with dementia worldwide will exceed 35 million by 2050. Neuropsychiatric disorders of the dementias are a major source of stress for the family members of those afflicted and a primary reason for nursing home placement, resulting in the high cost of treatment for every major dementia.Dementia is the first comprehensive treatment of neuropsychiatric approaches to both onset and treatment of the major dementias. Within these three volumes, leading experts on brain science and research explain details, developments, and emerging treatments for one of the most widespread, devastating disorders worldwide-dementia. This title provides mechanistic accounts of dementia onset that take into account neuropsychiatric disorders of dementia and reviews of the latest treatments for both patient and caregivers.