Today my pony's right hind became swollen from below the hock all the way through his pastern. There isn't any heat and I lunged him and he didn't appear to be off at all and he doesn't seem to be in any sort of pain. I cold hosed the leg and it helped very marginally. I did notice though that he had quite a few bug bites on his leg in the fetlock and pastern area (not specific bumps, but the scabby bites left behind). Is it possible that this is an allergic reaction? We have some pretty nasty bugs in my area (gnats, green heads, horse & deer flies, etc) and there are lots of ticks at the barn (pulled two off my pup tonight ).