Mild Cognitive Impairment is defined as significant memory loss beyond that which would be expected due to normal ageing without the loss of other cognitive functions and refers to the transitional state between the cognitive changes of normal ageing and very early dementia1.
MCI is a common condition encountered by clinicians and is estimated to occur in 12–18% of people aged ≥60 year2.
MCI is heterogeneous but in approximately 50% of cases represents a transitional state between normal aging and dementi3.
It is estimated that people with MCI have a 3 to 5 times increased risk of developing dementia with about 15% of patients progressing to dementia each year4.
In 2001, the American Academy of Neurology (AAN) set the following criteria for use by medical practitioners in determining if a person has MCI4,5.
- Report of memory problems, preferably confirmed by another person.
- Measurable, greater-than-normal memory impairment detected with standard memory assessment tests.
- Normal general thinking and reasoning skills.
- Ability to perform normal daily activities.
A recent update of these criteria allows the person to be unaware of the memory problems and allows more complex activities, such as managing finances, to be affected.6