What is the difference between a canker sore and a cold sore? Canker sores and cold sores are common but distinct oral ...

People also frequently pick at blisters which may spread the virus, make the sore larger and mean that it takes longer to heal and can lead to a scar.” Once a cold sore erupts, what can you do ...

Cold sores occur on the outside of the mouth and are caused by the herpes simplex virus. Canker sores are blisters inside the mouth that can occur due to injury, nutritional deficiencies ...