Which condition is associated with cheilosis and glossitis?

Cheilosis and glossitis are conditions associated with inflammation and ulceration of the lips and tongue, respectively. Riboflavin, also known as vitamin B2, plays a critical role in the metabolism of proteins, fats, and carbohydrates, and is essential for maintaining healthy skin and mucous membranes. A deficiency in riboflavin can lead to a variety of symptoms, including cheilosis and glossitis, due to its role in maintaining the integrity of epithelial tissues.

In cases of riboflavin deficiency, the inflammation and painful fissures seen in cheilosis, along with the smooth, swollen appearance of the tongue seen in glossitis, can be prominent clinical features. This makes riboflavin deficiency a strong contender when evaluating causes of these oral and dermatological manifestations, thereby explaining why the correct answer is associated with these conditions.

Some other vitamin deficiencies could also lead to similar oral findings; however, riboflavin is specifically noted for producing these symptoms. For instance, vitamin C deficiency primarily leads to scurvy, while niacin deficiency can cause pellagra, characterized by dermatitis, diarrhea, and dementia, which are quite distinct from the symptoms in question. Vitamin B6 deficiency can affect a range of bodily