Probly in a pasture setting? It's commom this time of year especially where pastures are fertilized. Also common in ponies and minis. Probly dry lot them and limit their time on grass. Or you can dry lot them and feed em hay instead of letting them graze.
Many vets and farriers will recommend banamine (vascular dilator) to get circulation going good again. Also it's a good idea to get them on soft ground like sand if possible
I would take them off the pasture asap, and if you can't put them in a drylot, stall them and get grazing muzzles with the safehorse plug option (the plug restricts grass but not water- you can get them from Action Rider Tack). If you must graze them for food, only do it a few hours in the afternoon/early evening. But drylot and hay only is best. Weigh your hay and give them only what they absolutely need. Posted via Mobile Device