i would deffinitly call.That seems so terrible i have ever seen anything like that before. At the pet store i volunteer at one of the balls had a not so good shed and had some stuck on his head and i told they guy he needed to raise the humididity and he said he would becuase people think they are unhealthy when they see skin stuck on em,next time i go in im going to give that guy a nice long warm bath and it should come off soon.