Dementia is a wide range of diseases and conditions that have a decline in memory, language, problem-solving and other thinking skills that affect a person's ability to perform everyday activities. Conditions are caused by changes to the brain, which can result in a decline in thinking skills, impairing daily life and independent living. They also can also affect behavior, feelings and relationships. Alzheimer's disease is probably the most well-known condition; it accounts for more than 60% of all cases.
You memory change as you get older, but memory loss that causes major changes to daily life is not typical. See the Alzheimer’s Association’s 10 Early Signs and Symptoms of Alzheimer’s to learn more.
