Memory problems are typically one of the first signs of Alzheimer's disease. Learn about other common signs of mild, moderate, and severe Alzheimer's.

Learn how to tell the difference between normal age-related memory loss and signs of a more serious problem like mild cognitive impairment or dementia. Sometimes, forgetfulness is caused by a treatable health condition.

Learn about mild cognitive impairment (MCI), in which people have more memory problems than normal for people their age, and when it might be time to see a doctor.

Learn common signs of memory problems that may mean it's time to see a doctor, as well as helpful tips for dealing with forgetfulness.

Doctors can diagnose "possible Alzheimer's dementia," "probable Alzheimer's dementia," or some other problem causing memory complaints. Learn about the benefits of early diagnosis.

Learn about biomarkers — measures of what’s happening in the body — used in dementia detection and research, including brain imaging tests such as MRI and PET.