Have had Lefty for about 4mos. We are in north central Kansas, got him in eastern Kansas. I feed brome hay, Stategy Horse Feed, carrots. He was on brome hay and beet pulp, can’t get beet pulp here. He was wormed about 2mos. ago. I use fly spray to help with flies. He has developed very small bumps on his lower legs, some on his sides and neck. He is rubbing against anything that will hold still. He is rubbing hair off his face. He is not off his feed, his energy level seems the same. But he is always itching. He has eaten some local grasses, and he ate some thistle plants before I could get him out of them. Please help; any ideas of how I can help him? Thanks.