My gelding has rubbed a spot very thin on his tail yet I've never seen him actually rub it. I don't notice any worms (he's stalled at night so I see just his poop) and his sheath doesn't seem dirty. We have had really hot, dry, buggy weather. He has small bumps on the side of his hips that almost look like bug bites. I looked his tail over tonight and the tailbone itself looks dry and flaky. Tonight I put Corona cream (it was all I had) on it and he definitely liked me rubbing the cream in. Has anyone experienced this before or have suggestions? Thanks!