oh wow. The perfect roundness in the first pic makes me think RINGWORM. If it gets where the middle is shiney and dry, like scar tissue. it is ringworm. Easily cured. get some atheletes feet medicine. or jock itch, i get them mixed up :) But then you will have to look for new outbreaks. And if you have cats, they could be pooping in the sand in ther paddock where the horses roll and spread it, but I have even heard flies can spread ringworm. Nasi had ringworm! When his new hair came in it was a different color in that spot until the next shedding! And you can get it so remember that. Those little bald spots can really hurt your image haha. Nasi got ringworm at the boarding barn because he was hot and would lay in his water tank spill over where algae was growing and his little paddock was completely shaded with damp earth. See if you have a spot in the horse's area that is damp... Now that we are in a sandy dry place my horses havent had rainrot but they have had thrush from the washrack. Now I bleach the washrack religiously.
Rainrot here begins by you pet the horse and feel these little scabby bumps that easily come off when you scratch them. And the hair comes out with the little spot. And it gets bigger and bigger. til a bald patch forms. It seems dry and scaley. but there is also a fungus that gets wet and yucky. But ringworm is dry and usually a perfect round circle exactly like in the first pic. I would bathe and then spray with betadine for a couple of months til you make sure whatever it is is gone. Ringworm will spread little spores that attach to the hair and will stay there a long long time and then appear again. janice-- yipie tie yie yo
