Mild cognitive impairment–amnestic type (MCI-AT) is mild, repeated memory loss. It lies between the normal memory loss of aging and the more serious conditions of dementia and Alzheimer's disease (AD). MCI-AT only involves problems with memory. Dementia and AD involve loss of other cognitive (mental) abilities, such as learning, reasoning, making decisions, and problems with confusion, language, and attention.
People with MCI who are over age 65 have a higher chance of developing dementia and AD than people with normal memory. Some studies show a progression rate of 10%-15% per year. However, many people with MCI never develop these disorders. Some even revert to normal.




