Beccy, are you sure she hasn't got fleas? If you have a very close comb in your grooming box, take it along her spine and down around the vent, then wipe on a piece of white paper. You might see the little jumping pests, but maybe just their excrement. Put a little water on the black specs and they will turn dark reddish brown if its flea dirt. That may be causing her to itch and perhaps even open up the skin. If it is open you can use steroid cream but she will need an Elizabethan collar on for a few minutes till the cream is absorbed (that's all it needs - just a few minutes). I take it this isn't the one with the pups?