An early sign of vitamin A deficiency is:

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Night blindness is an early sign of vitamin A deficiency. This occurs due to the inability of the eyes to adjust to low light conditions. Other symptoms of vitamin A deficiency include dry eyes, increased susceptibility to infections, and skin and hair abnormalities. Carotenemia and hypervitaminosis A are conditions where there is an excess of vitamin A in the body, while keratinization is a late symptom of severe vitamin A deficiency.

An Early Sign of Vitamin a Deficiency Is