Which of the following clinical characteristics is most typical of vascular dementia?
Group of answer choices
- Stepwise deterioration in cognitive function
- Presence of neurofibrillary tangles and amyloid plaques
- Early development of hallucinations and parkinsonian features
- Insidious onset with slow, progressive cognitive decline
The correct answer is:
Stepwise deterioration in cognitive function
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Explanation:
Vascular dementia is caused by impaired blood flow to the brain (e.g., from strokes or small vessel disease), leading to cognitive decline. Its most typical clinical characteristic is:
- Stepwise deterioration: Cognitive decline occurs in a staircase-like pattern, with sudden worsening after vascular events (e.g., strokes) followed by periods of stability.
Why not the others?
- Neurofibrillary tangles and amyloid plaques: These are hallmarks of Alzheimer’s disease, not vascular dementia.
- Hallucinations and parkinsonian features: These are more typical of Lewy body dementia.
- Insidious onset with slow, progressive decline: This describes Alzheimer’s disease, not the abrupt changes seen in vascular dementia.
Thus, stepwise deterioration is the most distinguishing feature of vascular dementia.
