PLS. HELP: My dog wont stop scratching yet she has no fleas

United States
December 20, 2011 6:21pm CST
Dog scratching - Cartoon image of a dog scratching
For the past two weeks my dog will not stop scratching. I looked to see if she has any fleas but she doesn't yet I don't know of any of reason why she would be scratching. Her dog food has not changed nor has the treats that we give her, so if she were allergic to anything I couldn't imagine what it could be. Does anyone have any idea as to what could be making her scratch so much? Any advice would be helpful. Thank you.