Getting canker sores is a much common occurrence than what most of us think it to be. It is not as embarrassing as it is made to be. One of the horrible myths is that it has something to do with your age or gender. It is believed that women or kids get affected more commonly than the grown up men. This is most definitely not true. Anyone who is of any age can be faced with this problem.
It is considered normal (read as easily treatable) if you are only developing these in your mouth around once or twice a year but if they are more frequent or immensely painful, you need to seriously give a thought to how to get rid of canker sores.
These usually spread from the inside of lips to the inside of cheeks and in the worst case; also reach to the gum region of the mouth. You can go for allergy tests as in worst cases, it is often that case that over the years or due to some hereditary factor you have developed canker sores as a way of your body acting up on an allergic reaction. Try avoiding the foods that might have a stingy effect on the sores or cuts.