Join Date: Feb 2012
Location: The land of Enchantment
If it were me, this is what I would do whilst I waited for the vet: I would take a scraping, then I would clean the area very well w betadine or the like, then a sulfur based soap, then a put good anti-itch ointment on it (people/horse no matter, the ingredient is the same), then put a bell boot over it. I would also wear gloves on the outside chance it is mites. Then I would examine the scraping under a microscope/loop for mites as the poster above suggested. You don't need super high power to see mites. It could be sweet itch, those little no-see-ums will congregate anywhere. Either way, I would try to make him as comfy (stop the itch) as possible until the vet could get there.
There is just as much horse sense as ever, but the horses have most of it.