What Causes Sore Tongue Every Time While Eating?

Everytime I eat, my tongue will get sore. I can feel raised places toward the back of the tongue like a rash. And the tip is very sensitive. It is not a burning sensation, rather a raw sensation. It doesn't really matter what I eat. But, if I eat toast, or a chip, it makes it even worst. It feels like it is cutting while I'm eating.