Sorry, your first photo didn't load and the second it was difficult to see. There are so many things that can cause skin problems on a horse. It's best to consult with your vet. It could just be bugs biting her and she's rubbing herself on something. It could be an allergy or a fungus.
Best to ask the vet
Ok 1st photo loaded. That one looks like a horse fly bite. They leave huge welts. If she is losing hair at the site, its probably a fungus.
"Until one has loved an animal, part of one's soul remains unawakened..."
- Anatole France
Last edited by Vidaloco; 08-15-2011 at 07:22 PM.