I am not sure what that is, but Zack has been doing the same thing. That is so weird!! The vet suggested we change his food, that it may be a wheat allergy. That is exactly how Zack's coat looks when he has a reaction!! The vet did a test where he scraped the hair and skin on his back, but so far nothing. Give her some benadryl, that helps Zack. Although it does not seem to bother him, it bothers me.