Alzheimer’s is a brain disease that causes a slow decline in memory, thinking and reasoning skills. Memory loss that disrupts daily life may be a symptom of Alzheimer’s or another dementia. It is the most common form of dementia, a general term for memory loss and other cognitive abilities serious enough to interfere with daily life. This disease accounts for 60 to 80 percent of dementia cases. Alzheimer’s disease is an irreversible, progressive brain disorder that slowly destroys memory and thinking skills, and eventually the ability to carry out the simplest tasks.
Last modified: April 12, 2018