When suffering from angular cheilitis and glossitis, patients might not be sure which vitamin they are lacking. It is recommended that patients should consume a variety of vitamins in moderate amounts, as vitamins can help with nutritional supplementation and enhance the body's immunity, which also contributes to the recovery from angular cheilitis and glossitis.

Therefore, it is suggested that patients increase their intake of fresh vegetables and fruits, avoid being picky or having an unbalanced diet, as this can effectively supplement various vitamins and significantly enhance their resistance. Additionally, patients must pay attention to oral hygiene, rinse their mouth after meals to remove food residues, and develop proper oral hygiene habits, including brushing teeth morning and night, and promptly removing food residues from the mouth after meals.