Dementias are brain disorders that impair memory, thinking, and behavior, 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 about their cause, and how they can be treated. The book also directs attention to current research on the subject, the outlook for future prevention and treatment, and resources providing further information.