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Geriatric Depression and Cognitive Impairment-An Update.
Shiva Shanker Reddy Mukku1, Ajit Bhalchandra Dahale2, Nagalakshmi Rajavoor Muniswamy2
1Geriatric Clinic and Services, Dept. of Psychiatry, National Institute of Mental Health and Neurosciences, Bengaluru, Karnataka, India.
Indian Journal of Psychological Medicine
|August 13, 2021
Summary
Older adults with depression frequently experience cognitive impairment, particularly affecting attention and executive functions. This cognitive decline in late-life depression (LLD) increases dementia risk and requires thorough clinical evaluation.
Area of Science:
- Geriatric Psychiatry
- Neuroscience
- Cognitive Psychology
Background:
- Depression and cognitive impairment frequently co-occur in older adults.
- The relationship between late-life depression (LLD) and cognitive deficits is complex.
- Cognitive impairment in LLD is not merely a historical concept of pseudodementia.
Purpose of the Study:
- To review recent literature on cognitive impairment in older adults with depression.
- To provide clinicians with an updated understanding of this comorbidity.
- To explore the nature and implications of cognitive deficits in LLD.
Main Methods:
- Conducted a narrative review of English-language articles.
- Searched major scientific databases including PubMed, Google Scholar, Science Direct, and Psych Info.
- Included original research, systematic reviews, and conceptual articles published between 2011 and 2019.
Main Results:
- Cognitive deficits are common in LLD, with attention and executive functions frequently impaired.
- These deficits may persist even after depression remission, suggesting they are not solely a trait marker.
- LLD with cognitive deficits is associated with an elevated risk of progressing to dementia.
Conclusions:
- Cognitive impairment is an integral feature of LLD, not just a mimic of dementia.
- Comprehensive evaluation is crucial for older adults presenting with depression and cognitive issues.
- Advanced diagnostic tools like neuroimaging and CSF analysis can aid in differential diagnosis.
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