Canker sores, or aphthous ulcers, are ulcerations that occur inside the mouth along the mucosa. Canker sores are small, round, and painful. They are gray in color with a distinct edge. It can occur at any age, but it is more commonly seen in teenagers. They can appear on the tongue, the lips, the gums, or the insides of the cheeks.

Causes of Canker Sores are following:

• Canker sores do not appear to be caused by viruses or bacteria, although an allergy to a type of bacterium commonly found in the mouth may trigger them in some people.

• Canker sores occur along with gastrointestinal problems, such as an inability to digest certain cereals Read the rest of this entry →