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Mild cognitive impairment (MCI) is a diagnosis that reflects an intermediate stage of cognitive impairment that is often, but not always, a transitional phase from cognitive changes in normal aging to those typically found in dementia, [1] especially dementia due to Alzheimer's disease (Alzheimer's dementia). [2]
Often shortened to MCI, this diagnosis is characterized by subtle yet noticeable changes in memory and cognitive ability, says Sarah McKay, PhD, a neuroscientist and author of The Women’s Brain ...
Mild neurocognitive disorders, also referred to as mild cognitive impairment (MCI), can be thought of as a middle ground between normal aging and major neurocognitive disorder. [11] Unlike delirium, mild neurocognitive disorders tend to develop slowly and are characterized by a progressive memory loss which may or may not progress to major ...
Amnesia is a deficit in memory caused by brain damage or brain diseases, [1] but it can also be temporarily caused by the use of various sedative and hypnotic drugs. The memory can be either wholly or partially lost due to the extent of damage that is caused.
[37] [38] People with objective signs of cognitive impairment, but not more severe symptoms, may be diagnosed with mild cognitive impairment (MCI). If memory loss is the predominant symptom of MCI, it is termed amnestic MCI and is frequently seen as a prodromal or early stage of Alzheimer's disease. [39]
[39] [144] People with amnestic mild cognitive impairment (in which memory loss is the main symptom) may progress to AD, whereas those with non-amnestic mild cognitive impairment (which has more prominent impairments in language, visuospatial, and executive domains) are more likely to progress towards DLB. [145]
Transient global amnesia (TGA) is a neurological disorder whose key defining characteristic is a temporary but almost total disruption of short-term memory with a range of problems accessing older memories.
[18] For AD, MCI can be an indicator of disease onset in early stages if the other hallmarks are also present. There are two types of MCI: amnestic MCI, which primarily affects the memory, and nonamnestic MCI, which affects thinking skills other than the memory. [18]