Question
Casal's Necklace is a characteristic erythema seen in deficiency of which one of the following vitamins?
This question was previously asked in
UPSC CMS 2026 Surgery, Gynaecology & Obstetrics, and PSM Question Paper (02-Aug-2026)
The correct answer is
Niacin
Casal's necklace, a pigmented, well-demarcated dermatitis encircling the neck in a collar-like distribution, is a classic sign of pellagra, caused by niacin (vitamin B3) deficiency.
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Important Questions from Vitamin B Complex Deficiency
- All of the following cause dementia EXCEPT:
- Which of the following is/are neurological manifestation(s) of vitamin $B_{12}$ deficiency?
1. Poor memory
2. Optic atrophy
3. Personality change
Select the correct answer using the code given below: - Angular stomatitis and cheilosis are indicative of deficiencies of which of the following vitamins?
1. Riboflavin
2. Pyridoxine
3. Thiamine
4. Niacin
Select the correct answer using the code given below: - Confabulation is a feature of the deficiency of:
- All of the following are components of the Wernicke's syndrome EXCEPT:
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