Question:
Choose the correct pair from the options given below
Choose the correct pair from the options given below
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Vitamin A Deficiency Triad: Night-blindness (Nyctalopia), Dry eyes (Xerophthalmia Bitot spots), and Keratinized dry skin (Follicular hyperkeratosis).
Updated On: Sep 4, 2026
- Rickets - Pyometra
- Gentamycin - Vitamin E
- Vitamin A - Dryness of skin, eyes, night-blindness
- Pica - Retained placenta
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The Correct Option is C
Solution and Explanation
Step 1: Understanding the Concept:
Vitamin A (Retinoids) deficiency pathology causes failure of rhodopsin resynthesis and squamous metaplasia of epithelial membranes.
Step 2: Detailed Explanation:
Evaluating the clinical symptom pairs:
1. Vitamin A - Dryness of skin, eyes, night-blindness: Deficiency of active retinoids impairs rhodopsin photopigment regeneration in retinal rod photoreceptors, causing Nyctalopia (Night-blindness). In epithelial tissues, loss of retinoic acid causes keratinizing squamous metaplasia, leading to Xerophthalmia (dryness of conjunctiva/cornea) and Hyperkeratosis (dry, rough skin). This is the correct pair.
2. Rickets is caused by Vitamin D deficiency.
3. Pica (depraved appetite) is caused by Phosphorus/Iron deficiency.
Step 3: Final Answer:
Hence, the correct pair is Vitamin A - Dryness of skin, eyes, night-blindness, matching option (C).
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