An aphthous ulcer is a small, shallow lesion that develops on the soft tissues of your mouth—like your gums, tongue, or the inside of your cheeks. Unlike cold sores, they are not contagious and cannot be spread through kissing or sharing drinks.
Mix 1 teaspoon of salt or baking soda in half a cup of warm water to help dry out the sore and neutralize acidity. Download Aphtes pdf
Typically round or oval with a white or yellow center and a red, inflamed border. An aphthous ulcer is a small, shallow lesion