My friend's husband asked if people "spay" mares and we got to talking about how it's expensive and evasive and only done if absolutely necessary. Then I said that some responsible horse owners will spay their mares if they have a genetic disease that can be passed on to their offspring so that if they ever sold the mare, she wouldn't be bred and contribute to ongoing problems such as HYPP and other diseases. This is when I remembered that there is some genetic disease that causes a horse's skin to fall off and for the life of me, I cannot think of it! I remember reading about it along time ago and I think it's most common in QH's. I believe it starts along the spine and the skin begins separating and sloughing off. The horse usually has to be put down. I even think it's something they can live with and never have it happen but most begin losing their skin at some time in their life. I want to say I remember reading something about someone who owned a horse positive for this and they were trying to find out how to manage it and prevent an outbreak. Am I crazy?!?! Can anyone think of what disease this is?