What Is Mild Cognitive Impairment?

Mild cognitive impairment (MCI) is an intermediate state between normal aging and dementia, and it is a cognitive impairment syndrome.

Mild cognitive impairment

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Mild cognitive impairment (MCI) is an intermediate state between normal aging and dementia, and it is a cognitive impairment syndrome.

Mild cognitive impairment (MCI) is an intermediate state between normal aging and dementia, and it is a cognitive impairment syndrome. Compared with normal elderly who matched their age and education level, the patients had mild cognitive decline, but their daily abilities were not significantly affected. The core symptom of mild cognitive impairment is cognitive decline. Depending on the etiology or the location of the brain damage, one or more of memory, executive function, language, use, and visual spatial structure skills can be involved, resulting in corresponding clinical symptoms. , Its cognitive decline must meet the following two points:

(1) Cognitive decline:

Cognitive impairment reported by the complainant or informed person and objectively examining evidence of cognitive impairment; or / and

Objective inspection confirmed that cognitive function was decreased compared with the past.

(2) Basic daily abilities are normal, and complex instrumental daily abilities can be slightly damaged.

According to the cognitive domain of impairment, the symptoms of mild cognitive impairment can be divided into two categories:

(1) Forgetting mild cognitive impairment

The patient showed memory impairment. According to the number of affected cognitive domains, it can be divided into simple memory impairment type (only memory is involved) and multi-cognitive domain impairment type (in addition to memory involvement, there are one or more other cognitive domain damage), the former is often Early cause of Alzheimer's disease, which can be caused by Alzheimer's disease, cerebrovascular disease or other diseases such as depression.

(2) Non-forgetting mild cognitive impairment

The patient presented with cognitive domain impairments other than memory function, and memory function was retained. Can also be further divided into non-memory single cognitive domain damage type and non-memory multiple cognitive domain damage type, often caused by frontal-temporal degeneration, Lewy body dementia and other early lesions.