Canker sores are small ulcers that appear inside our mouths. They begin as a small red dot that will form a white head and eventually rupture and leave an open sore. These are slightly different from the also common cold sore. Cold sores are caused by a herpes virus, appear outside of the mouth, and are highly contagious. Studies have yet to prove just exactly why we get canker sores. Some scientists suggest they are inflammatory/stress response, the result of an injury, something that is hereditary, or caused by bacteria or viruses. Junk food, stress, acids, tobacco, dehydration or the … Continue reading →