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The characterisation of subjective cognitive decline
Frank Jessen1, Rebecca E Amariglio2, Rachel F Buckley3
1Department of Psychiatry, Medical Faculty, University of Cologne, Cologne, Germany; Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases (CECAD), University of Cologne, Cologne, Germany; German Center for Neurodegenerative Diseases (DZNE), Bonn, Germany.
The Lancet. Neurology
|January 21, 2020
Summary
Subjective cognitive decline (SCD) describes concern about cognitive function in unimpaired individuals. While SCD may increase dementia risk, most do not progress, necessitating tailored diagnostics for underlying conditions.
Area of Science:
- Neurology
- Neuroscience
- Public Health
Background:
- Growing public awareness of brain health and Alzheimer's disease.
- Increasing number of cognitively unimpaired individuals seeking medical help for perceived cognitive decline.
- Subjective Cognitive Decline (SCD) is a recognized condition since 2014.
Purpose of the Study:
- To describe Subjective Cognitive Decline (SCD) and its implications.
- To highlight the diagnostic challenges and approaches for individuals with SCD.
- To underscore the link between SCD and early neurodegenerative diseases.
Main Methods:
- Review of epidemiological data on SCD.
- Analysis of the relationship between SCD and progression to mild cognitive impairment or dementia.
- Discussion of diagnostic strategies for individuals with SCD.
Main Results:
- Epidemiological data indicate an increased risk of mild cognitive impairment and dementia in individuals with SCD.
- The majority of individuals experiencing SCD do not progress to dementia.
- Tailored diagnostic processes are recommended to identify or exclude underlying medical conditions.
Conclusions:
- SCD is a condition of concern for cognitively unimpaired individuals worried about their cognitive function.
- While associated with increased dementia risk, SCD is not always progressive.
- Personalized medical evaluation is crucial for individuals with SCD to address potential underlying causes and differentiate from early neurodegeneration.
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