What is the most common cause of dementia?
Alzheimer's disease
Parkinson disease
Medications
Multi infarct
The Correct Answer is A
A. Alzheimer's disease is the most common cause of dementia, accounting for a majority of cases.
B. Parkinson disease can cause dementia, but it is less common than Alzheimer's disease.
C. Medications: Certain medications can cause reversible cognitive impairment but are not the most common cause of dementia.
D. Multi infarct dementia (vascular dementia) is a common cause, but Alzheimer's disease is more prevalent.
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Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
A. Bipolar disorder: The described behavior of extreme mood swings (elevated mood followed by significant depression) is characteristic of bipolar disorder.
B. Dysthymic disorder: Dysthymic disorder (now known as persistent depressive disorder) involves a chronic state of depression but does not typically feature such pronounced mood swings.
C. Hypomanic episode: A hypomanic episode would involve elevated mood but would not usually be followed by the severe depressive episode described.
D. Unipolar depression: Unipolar depression is characterized by a persistent low mood rather than the dramatic shifts described.
Correct Answer is D
Explanation
A. Sleep: While sleep is important for overall health, it is not as directly preventive of cardiac disease, falls, and depression as exercise.
B. Medications: Medications can manage symptoms but are not preventive measures for these conditions.
C. Nutrition: Nutrition is important for health but does not directly address the prevention of falls and depression as effectively as exercise.
D. Exercise: Regular exercise is known to improve cardiovascular health, reduce the risk of falls by improving strength and balance, and alleviate symptoms of depression through the release of endorphins and other benefits.
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