This seems to help a little, but I can't wait until his meds come in. The sun came out and so did the head-shaking. He seemed to do well all morning with his mask on, but the mask came off and he started the head bobbing and nose scratching. I put the mask back on, but it hasn't gone away. I'm watching him now. If it doesn't go away soon, I'll put him back in his stall. He gets 100 percent relief in there.