Anyone have any idea what this is? This is the mule that I have been having neurological issues with. She has one spot on the side of her shoulder that was bald and itchy- about the size of a silver dollar. So I started clipping around it.... then finding more spots... and clipping more. None of these were visible, she's like a wooly mammoth. It was driving her nuts itching it. I only clipped this much, but then gave her a bath with an aloe shampoo and I can see more patches of this down her front legs and behinds her shoulders once I got her wet. I put some cortizone cream on it and she seemed pretty comfortable when I got done with her.