10yr old mare. Came in from paddock with 4 swollen legs, barely able to walk, temp of 103.4. Vet came, took blood, gave Iv with DMSO and oxytetracycline. no change. vet came next day and repeated the Iv. finally fever dropped, swelling decreased and while stiff could walk. 1 week of doxy. swelling decreases, but never completely goes away. Blood work all neg or normal.
Anaplasmosis,- neg. lyme titer very low; CBC normal. No heat in the legs just swelling. 6weeks later still fighting the swelling legs - some days very swollen, other days very minimal swelling. Repeated anaplasmosis - neg again. Since the mare had such difficulty walking , the vet did a vit E and seleium level.- normal. also dna test for pssm.- neg. hypp - neg neg.
There were other weird symptoms too - manure seemed different - put on digestive supplement - returned to normal.
Then she had a couple weird sweat marks - one the size of a dinner plate on her side and ringed with foamy sweat. Horse wasn't sweaty anywhere else. Almost seemed like she was tying up except the horse didn't seemed bothered at all.
Tried an antihistamine thinking the swelling was caused by something in her environment - so far not much result except for making the horse act like she feels better.
I go out to the paddock today and the swelling in all legs is more than it has been since she became sick. No temp.
anyone seen anything like this before or have any suggestions or ideas?
Is she the only horse sick or are others feeling (even slightly) under the weather?
Jingles for her *
as far as I know she's the only one ( she's boarded in a nice place that seems to do a good job taking care of horses) I've had horses for 45yrs and never encountered anything like this.
I should say that her swollen legs are not painful to touch and the swelling is very firm when it's present.
How are her lymph nodes? I met a horse once who's hocks would swell up to the point where his legs would look like hams, and the problem was then attributed to his lymphatic system. May be worth to explore...
When she initially became sick, I think the vet checked them and were unremarkable. We also tested her for piroplasmosis even though where I live it's very rare but that was neg too.
The vet is stumped. The horse doesn't seem to be getting better. some days maybe, but many days not so much.
Has the vet tried corticosteroids to reduce inflammation? Dexamethasone, prednisolone or similar? Could be a strange presentation of an allergic reaction, and antihistamines don't work as well in horses as they do in other species.
Seems odd to me that horse would have a fever but bloodwork comes back normal. Typically (but not always) fever is a result of infection, and given the other symptoms you describe it sounds like an infection. If it was an infection there should be elevated white cell count.
NSAIDs are next on the list to try. I never saw the lab reports but I'm sure the vet said everything was within normal range. Surprised her alot. It wasn't what she was expecting to see.
No coughing, no runny nose,no diarrhea, no colic etc.
This sounds like erlichiosis or babliosis. Did your vet run an entire tick borne panel? If it is your horse needs to be on doxy or oxytet much longer. Make sure you do not supplement with magnesium at the same time.
"Kindness is free" ~ Eurofoal
--- The CoTH CYA - please consult w/your veterinarian under any and all circumstances.
So... Vet didn't give banamine to knock the fever down? With a temp of 103.4?
With the inital bout of fever, when I called the vet, she immediately told me to give banamine, which I did. Remember, the horse hasn't had a temp in 3 months, just these terrible swollen legs that come and go.
Anaplasmosis/erchlicia came back neg both times. Horse never had it. Vet thought that's what it was too except the blood work, says no.
Interesting. I had two horses with similar symptoms back in the early 90's...tree trunk, Pillsbury dough boy edema all four legs. One mare developed simultaneous purpura all along her her chest, sides, and belly..big ones. Those two incidents were related to an outbreak of strangles in the barns where the horses were (neither mare contracted actual strangles symptoms other than fever first, but other horses did with abscesses etc...both mares had been vaccinated for strangles about a year before)..separate barns..one in NY State and one in Florida. They were both treated with alternate steroid then antibiotics and it took about 2 months to resolve. Weeping ulceration in the legs...a big mess, but both mares recovered fine.
ETA: Ulcerative lymphangitis with purpura, if I remember correctly.
We also had a horse that had similar symptoms. This one was also connected to a case of strangles. The horse recovered from the strangles, but developed a autoimmune reaction to his own antibodies. Legs stocked up all the way through the elbows until the poor guy could hardly move. I wonder if that's similar to what's going on with yours since he had the fever at one time. (Not saying it was strangles, but perhaps some other low grade virus.)