Dementias are brain disorders that impair memory, thinking, behavior, and physical activity, and Alzheimer's disease (AD) is the most common form, affecting 50 to 60 percent of dementia patients. Alzheimer's Disease and Other Dementias provides helpful clarification of this group of diseases and their specific types. Readers will learn how to recognize the symptoms of dementia or Alzheimer's disease, how these disorders are diagnosed, the latest theories...