About 2 weeks after I bought and moved Cinny he got a small spot on his rear. I thought he was just rubbing it on a fence. It started as a very small spot on once side and over about 3 weeks it was much worse and looked like this. fungus 1.jpg fungus 2.jpg
At the time I was boarding with a friend who has bred and raised horses for over 20 years and was pretty knowledgeable... but she also thought he was just rubbing or having an allergy.
It got worse until it went down to his hocks! We finally had the vet come who took a 10 second looks and said that's FUNGUS... and refused to touch my horse because he was headed out to check on a pregnant mare and didn't want to contaminate her.
We scrubbed the area daily with a soft brush and an iodine wash. Once it dried I sprayed with Veterycin gel. The vet said to do this every day for 3 weeks, even if it looked like it was going away. Cinny's hair began to grow back after about 2 weeks.
Now any time he gets a weird looking spot I drown it with fungus gone LOL.