Alzheimer disease vs Vascular dementia
How to tell Alzheimer disease and Vascular dementia apart when a board question makes them look alike.
Step 2 CK pairs are in open beta while clinical review finishes. Spot an issue? Tell us.
Stepwise deterioration with focal neurologic findings indicates vascular dementia rather than Alzheimer disease.
Side by side
Gradual progressive memory-predominant decline without focal neurologic events suggests Alzheimer disease.
Stepwise cognitive decline with focal deficits and cerebrovascular lesions on imaging suggests vascular dementia.
Alzheimer disease involves progressive amyloid and tau neurodegeneration affecting hippocampal and associative cortex.
Vascular dementia results from cumulative ischemic infarcts or small-vessel disease disrupting distributed cognitive networks.
MRI often shows hippocampal and medial temporal atrophy; cognitive testing reveals amnestic-predominant deficits with gradual serial decline.
Brain MRI shows multiple infarcts, lacunes, or confluent white-matter ischemic disease; exam may show focal signs such as asymmetric weakness or hyperreflexia.
The trap
All older-adult memory loss may be labeled Alzheimer disease, overlooking stroke history and focal deficits. Timeline of abrupt declines plus vascular imaging burden should redirect diagnosis and management goals.
The repair move
Next best step: define cognitive trajectory and vascular burden, then institute aggressive vascular risk reduction including blood pressure control, statin therapy, diabetes management, smoking cessation, and antiplatelet therapy when indicated. If Alzheimer pattern predominates, consider donepezil titration; for vascular dementia, prioritize secondary stroke prevention to slow further decline.
Try a free question
CoreA 76-year-old woman has gradually worsening memory over 4 years with no focal neurologic deficits. BP 132/78 mm Hg, HR 72/min, temp 36.6 C. MRI shows hippocampal atrophy without infarcts. What is the most likely diagnosis?
Show answer and explanation
Answer: B. Alzheimer disease. Gradual amnestic decline with hippocampal atrophy and no focal stroke signs supports Alzheimer disease.
Why the other choices are tempting
- A. Vascular dementia is less likely without stepwise decline or infarct burden.
- C. Frontotemporal dementia usually begins with behavior or language changes at younger ages.
- D. Normal-pressure hydrocephalus usually presents with gait and urinary disturbances.
- E. Delirium is acute and fluctuating rather than chronic progressive.
Flashcards
Tap a card to flip it.
What progression pattern most strongly supports vascular dementia?
A stepwise pattern with sudden declines after cerebrovascular events supports vascular dementia.
What cognitive domain pattern is typical in early Alzheimer disease?
Early episodic memory impairment with gradual progression is typical of Alzheimer disease.
Quick answers
What is the fastest way to tell Alzheimer disease from Vascular dementia?
Stepwise deterioration with focal neurologic findings indicates vascular dementia rather than Alzheimer disease.
What is the key clue for Alzheimer disease?
Gradual progressive memory-predominant decline without focal neurologic events suggests Alzheimer disease.
What is the key clue for Vascular dementia?
Stepwise cognitive decline with focal deficits and cerebrovascular lesions on imaging suggests vascular dementia.
What is the common trap with Alzheimer disease vs Vascular dementia?
All older-adult memory loss may be labeled Alzheimer disease, overlooking stroke history and focal deficits. Timeline of abrupt declines plus vascular imaging burden should redirect diagnosis and management goals.