Canker sores can be described as painful small ulcers, found inside the mouth or upper throat. These are white or yellowish in color and occur in the lining of the mouth, surrounded by redness. Also known as Aphthous Stomatitis and mouth ulcers, they cause much discomfort, especially while eating and talking. They are recurrent in nature and may reappear after being healed once. However, canker sores are not contagious do not spread from one person to the other. Canker sores appear due to various reasons - deficiency in nutrients, tension, stress, eating a particular type of food, indigestion, etc. They are not serious ij nature and can be easily healed with the help of home remedies. In the following lines, we provide some natural treatments for curing canker sores or mouth ulcers.