Usually when the ailment troubling your dog goes away, so does the self mutilating behavior. Sometimes the behavior continues as a habit even thought the health problem is long gone.
Many dogs have excess nervous energy and no where to vent the stress, so they develop a habit or pasttime of licking themselves raw. Other dogs actually learn this behavior because their owners make such a fuss over them whenever they indulge in such activities. It doesn't take long for Rover to realize this is quick and easy way to gain instant attention and affection.
The key to stopping this habit is distraction - giving the dog something else to do and not unintentionally rewarding the dog. First, be sure to provide your dog with plenty of opportunity to run, play, exercise and vet her energy. A well exercised, trained and happy dog is not likely to have to relieve stress or entertain herself by self mutilation.
Whenever the dog begins to lick or chew herself, try making a very short, sharp. loud sound just enough to startle the pet into stopping and looking around to see what happened. After the dog has stopped for some period of time, just a few minutes or several seconds, depending on how severe the problem is then call her over to play a game, do some training or even get a massage.
Realize that this habit is often just as hard for a dog to stop as it is for humans to stop habits such as fingernail biting or cigarette smoking, so please be patient and keep trying.