Question
Which of the following are causes of reversible dementia?
I. Hypothyroidism
II. Vitamin B12 deficiency
III. Dementia with lewy body
IV. Thiamine deficiency
Select the correct answer using the code given below:
| A. | I, II and III |
| B. | I, II and IV |
| C. |
I, III and IV |
| D. |
II, III and IV |
|
Correct Answer � B Explanation |
 |
Some causes of dementia are potentially reversible if identified and treated early.
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I. Hypothyroidism: Causes cognitive decline and memory impairment; symptoms improve with thyroid hormone replacement.
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II. Vitamin B12 deficiency: Leads to cognitive dysfunction and neuropathy; reversible with supplementation.
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III. Dementia with Lewy body: Neurodegenerative disorder; irreversible.
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IV. Thiamine deficiency: Causes Wernicke–Korsakoff syndrome; early treatment with thiamine can reverse confusion and prevent progression.