Mare Dragging Back Hooves
Last weekend my friend came to feed and noticed that his mare seemed to be limping/having difficulties walking on her back legs. He immediately took her to his very trusted family vet. It was first suspected that the problem was neurological and an early diagnosis of West Nile was given. She spent 4 days at the vet while they waited for the more definitive blood results to come back. However, when received, she tested negative for West Nile. Since, the vet has not given a specific diagnosis on her condition except to say that it could have been a result of something she consumed.
We have 4 horses on our pasture which have been on this same pasture for over 6 months. The land is private and no one has access to it or them.
My friend has since brought the mare home and the vet suggested a round of oral antibiotics for the next 6 months. It has been about 9 days since her first symptoms, and the mare is still dragging her back hooves slightly and seems to want to give to weight on her back feet, but does not collapse. She does not appear to be in any pain, is eating well, drinking well, and is moving around well.
I am posting to see if anyone has experienced any similar symptoms? I have tried to explain to my best ability, but if someone sees gaps in my description, please say so and I'll try to fill in the blanks.
My friend raised this mare from a weanling now to 6 years. She is very important to him. Her riding regime before her symptoms consisted of some trail riding and roping practice.
Thanks for any insight!