Looking for suggestions on foot problem

[Eric Muff]

I have a 7 year old Appy with a foot/skin problem.
About a month ago we took the ponies out for a day in the mountains and I noticed the Appy had what looked like an "irritation" on the back of his foot just above the heel.
I looked it over and determined it was nothing serious.
We did the ride and all went well with no signs of problems with the foot.
I kept an eye on it over the next few days and decided that it may have been a slight rope burn in the 1st joint above the heel,right where you would expect it to be.
The problem was that the condition started to spread like a rash but only it took the form of a scabby looking irritation.We had a week of pretty wet weather and the horses had to suffer it out in a small corral that was super muddy about a month prior to this because I was out of town on business and the kid who was looking out for them didn't know any better.
I figured that it may be some sort of "bug" so I debridded the area scraping off the scabs and applying a sulpher based anti-biotic salve which I had used previosly for skin irritations.This has had no effect after a couple weeks and now I am puzzled,any thoughts boys?

[horshur]

Scratches, mud fever, greasy heel....common problem somtimes hard to treat..A fungal/bacterial infection of dermis. Click on link for some good advice.
http://www.anvilmag.com/farrier/101f5.htm

[Mr.pacojack]

[Shorty]

No need to coment. I'd bet one of those is your problem.

[Eric Muff]

Yep,sounds pretty much the same.Will see the vet about supplies tomorrow.

Thanks,Eric

[Dan V]

I have used a pink spray I got from the vet called "Topical Fungicide" made by VEDCO with good success. The active ingredient on the bottle says: Benzalkonium Chloride 0.15%