Two years ago I acquired a 15ish year old mare from a bad situation. For the first six months, she wouldn't even look at me straight on, and even now, two years later, she has come a long way, but I think she will always have trust issues. About four months ago, she began excessive urinating... at first I thought it was due to the presence of a gelding who was in the pasture for a few months, and that she was cycling. My vet did blood work which showed elevated white blood cells, and treated her with three weeks of antibiotics. The mare showed some improvement, but was not back to normal. We did another round of antibiotics and I have seen no improvement. Her back legs and tail stay wet with urine - the process of washing her back legs is very stressful for her so I have abandoned that idea. She has lost a noticeable amount of weight, especially along the top of her back. She is fed Purina Senior feed and has hay available 24/7.
My vet has suggested that it is possible the mare has stones, and treatment would most likely be expensive. Quite frankly, I am just about out of money after the expense of raising an rejected foal who had his own medical issues. I have done some research online and am wondering if Cushings Disease could be a possibility? I appreciate any input from those of you who might have some experience with a similar problem.