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Deficiency of which one of the following vitamins may result in the inflammation and irritation of the corner of the mouth and cracks in lips?

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Deficiency of which one of the following vitamins may result in the inflammation and irritation of the corner of the mouth and cracks in lips? Answer: Vitamin B2

The inflammation and irritation of the corner of the mouth (known as angular stomatitis or angular cheilitis) and cracks in the lips (cheilosis) are most commonly associated with a deficiency of vitamin B2 (riboflavin).

Question context

This question is part of 🧬 Biochemistry within the broader 🧬 Medical Science subject and appears in the ETEA Educational Testing and Evaluation Agency preparation collection. Reviewing the answer together with nearby questions helps reinforce the underlying concept and identify how it may appear in competitive exams.