It's getting worse as she gets older even though she is only 5, apparently she was neglected as a foal. Now a days, she can't breath out of one nostril, if you block the other, you can just feel the air pushing against your hand. It is constantly running. Her eyes sometimes get gunky too, but most of the time there are obvious causes, unless her nose gets really bad, then they start running too. Just curious to know if anyone out there has ever had this before? It isn't contagious, my gelding and two other mini mares are all perfectly healthy and have been paddocked with her for a year or two know. Anyone out there heard of this before or seen it? I hadn't until Baby came along but surely someone else has.