Cracks at the corner of the mouth (Angular cheilitis) are painful. A reader blames toothpaste. Could nutritional deficiencies also contribute?
One reader found that cracks in the corners of the mouth disappeared when treated with athletes' foot cream. Others find that changing toothpaste makes a difference.
A reader dabs hydrogen peroxide on the corners of the mouth every day after brushing the teeth to make angular cheilitis disappear.