Warts are not uncommon in young horses. The scientific name for warts is Equine Papillomavirus.
Warts are caused by a virus. Typically, once a horse gets warts, they won’t get it again. This makes it more common in younger horses and does mean it is something that can spread through the barn.
You could try to prevent warts from spreading throughout the barn, the virus is so benign it really isn’t of any major concern.
Horse’s warts symptoms were small, flesh-colored irregular bumps on his nose and eyelids. They kind of looked like cauliflower. They didn’t seem to itch but would occasionally bleed if he scratched them.
Warts usually self resolve so the best treatment is just to leave them alone. Warts came and went away without too much incident.