Q. My dog is constantly scratching and whining. She doesn't seem to have fleas. What could be wrong and what can we do to help
A. She could be allergic or suffering with some skin parasites, including fleas. If she is sensitive to flea bites, just one single bite can trigger itchiness and the signs you are describing. I would recommend you treat her monthly with a product that works against different skin parasites, to exclude this as a cause. You need to treat her religiously every month. If she is allergic the treatment is a bit more complicated.