Originally Posted by tinyliny
I had heard this , too. Have no idea if it's true or not. But Zulu has rainrot, and it's by no means hot or humid here, just cold and damp. And, if like many virus , it's present all the time but only manifests at certain times, maybe it is due to some kind of dietary deficiancey combined with a genetic predisposisiton to susceptabiliy.
Firstly Rain rot is not a virus but is a fungus. If the skin becomes broken - horse rubs scabs off or owner picks them off it can then pickup a bacterial infection. Some horses are very susceptable to this fungal infection. Eg - I moved from one end of the country to the other with my horses one of which I had owned for 8 years, the first year he was fine then he went to one of my students on lease and promptly got mudfever on all his white socks. He was a really healthy horse - he'd never had the vet for anything in all the time I'd owned him. Fed very basic feeds with just a multi mineral block to help himself. We sorted it promptly with the Nizoral and it never came back again.
Many horses will get rain rot in the winter months - either from being exposed to the elements - no cover, or they may be wearing a rug that has leaked in the rain and left them with a damp lining against the skin, supplying the ideal place for the fungus to grow. I have seen some horses with large bare patches on the top of their rumps from just this situation.
Wash with Nizoral and the rain rot will go within days. Make sure that you wash well beyond the affected area as well as being a fungus it always spreads outwards in an ever widening circle - just like the mushroom rings you see in the fields in late summer.
It is interesting to see that more and more people have horses that suffer from fungal infections than in the past. I've worked in the equine industry fo over 40years and have seen the vast change in medical conditions the horses have developed. Much I have put down to the increase in the use of commercially prepared feeds. Feeds full of ingredients that have been historically known for not being good for horses. A massive increase in the use of molasses to bind feeds - fungus LOVES sugar! I remember very few horses or ponies wore covers/rugs/blankets and were as healthy as the day is long. We rarely saw the vet yet we rarely if ever gave our horses any supplements. They got straight oats, barley, meadow chaff and damped with water or sugarbeet. They had good feet and were exceptionally healthy.