Which of the following is a symptom of ariboflavinosis?

• A. Night blindness
• B. Cheilitis unrelated to riboflavin
• C. Angular stomatitis with cheilitis due to riboflavin deficiency
• D. Edentulous jaw

Answer: (C)

Ariboflavinosis is a riboflavin (vitamin B2) deficiency, which commonly causes mucocutaneous inflammation of the lips and mouth. The most characteristic finding is angular stomatitis with cheilitis—the cracking and inflammation at the corners of the mouth along with lip inflammation—because riboflavin is essential for maintaining the integrity and turnover of mucous membranes. Night blindness is tied to vitamin A deficiency and affects the retina, not riboflavin. An edentulous jaw is not a symptom caused by riboflavin deficiency, and cheilitis not related to riboflavin doesn’t reflect ariboflavinosis. So the description that links angular stomatitis with cheilitis to riboflavin deficiency best fits ariboflavinosis.