Most of the horses at the barn I board my Arabs at have been coming in with scratched-up noses. We thought it was sunburn at first and put sunscreen on them, but my colt came in from the pasture today (they're out 21 hours a day) with a strange reaction and bumps on his rump and back legs, especially on the leg with the sock. The vet came out (I'm at my mom's so my dad was there with her) and said it was an allergic reaction to the dry clover. Apparently the drought has been causing problems with different plants in the pasture.
Anyone have any experience with this? This is all the info I have, as I can't get to the barn until Tuesday at the earliest. My dad is going to send me a picture tomorrow that I can post.
The vet (same one I use with the horses at my mom's, so I defintiely trust her judgement) told the BO to sweat his legs and bathe him with iodine shampoo.