Lyme Re-Test & Other Things
Those that have followed this blog over the summer months know that back in May, Willie was bitten by a tick, and that after a brief pre-emptive treatment of doxycycline and a six-week waiting period, I got him tested in July, when he was diagnosed with a "strong positive" for Lyme. We treated him with doxy for another six weeks, and then as required, I waited another six weeks to get a clearer result. It ended up being a few extra weeks as I could only get the vet out last Monday, but more on that in a minute.
The vet called Tuesday night with the titer results. Willie's titer came back at 1:5,120, lower than the result of 1:10,240 last time. Because of the way Lyme works, there is no clear-cut "yes/no" test; the number just reflects the amount of antibodies in the horse's system, or the current presence of the disease. Many horses, particularly in the northeastern US, have been exposed to Lyme over the course of their lives, and would likely show a slight positive if tested at random. The titer ranges up to about 1:40,000 or so; the lower the ratio, the lower the exposure.
I don't know how low we could possibly get that number, but at this point treating him would be more trouble than it's worth. He has shown no symptoms other than the bite reaction and his initial fatigue and funk when starting the doxy. While Lyme can be very sneaky, and worse, prone to recurrent flare-ups, the vets and I feel that he seems to be in the recumbent stage and it's better to just leave it be at this point.
The 6-week treatment cost about $600, and antibiotics are hard on the gut, even when you feed a probiotic supplement to balance them out. Plus, getting Willie to eat them was a royal pain, and when he previously thought a good sloppy mash was the best thing in the world, he is only now cautiously interested if I offer him one, as I like to do daily in the winter months.
Unrelated to the Lyme, a few days before the vet came out, Willie was a little not-quite-right. We trailered out to a new park to go riding, one with steeper and rockier trails than we're used to. It was a cold, damp day and he rode in my trailer with another horse for the first time in ages, instead of having a large box stall to ride in all by himself, so when he was a bit pluggy at the start, I blamed the weather, the trailer, and the footing for his attitude. He was still happy to be out somewhere new, and when we found soft, grassy areas, he stretched out and galloped eagerly, in my mind, confirming my suspicions of the above.
The next day we headed to more familiar fare, our old stomping grounds near the Horse Park. It was a warmer and sunny, and I thought he'd be much happier out and about and jumping his favorite things on much kinder footing. He seemed a little bit tired after the day before (maybe 15 miles on terrain he's not used to) but perked up when we got to the park.
A few minutes into the ride, however, he was puffing and sweating, and though his ears pricked forward and he pulled me to the jumps, something was not right. He had been body clipped the week before and is fairly fit -- the weekend of our Hallowe'en fun we considered doing a 25-mile CTR, but abstained after riding around on all that pavement the day before -- so he should not have been struggling with less than 20 minutes of light work.
I dismounted, loosened his girth and noseband, and led him back the mile or so to the trailer on foot. He still seemed quite happy, and he stopped to nibble the grass here and there as I let him. We packed up and went back to the barn, and when he'd had time to settle from the trailer ride, I temped him -- no fever, he was at 98.9, which is normal for him. (Like me, he tends to run a bit lower than average.) His gut sounded good and his appetite was fine, although his manure was not passing quite right -- smaller, softer piles than normal -- and he was urinating more frequently. But since he wasn't in distress, and I had a killer headache, I decided to turn him out with his friends, where he could move and graze as he pleased, and went home to nap for a few hours.
When I came back to check on him, I checked all his symptoms again. Everything was normal except for, again, the manure, and when I did the skin-pinch to test for dehydration, he was tenting a bit -- the skin was staying in the pinched-up position for a few moments instead of immediately snapping back into place. His gums were the normal color.
Despite the fact that his appetite was quite good, and he was otherwise bright and perky, I called the vet. After I described his symptoms, the vet said that he was not too concerned, and to walk him if I felt a need, but otherwise just keep an eye on him like I had been. I gave him a small dose of electrolytes, smearing the gel on his tongue to encourage him to drink, and hung out at the barn for a few hours to observe him. Finally, my headache was winning over again, and since my horse was insisting he was fine no matter what my gut said, I left him in a stall so that I could keep track of his manure and eating/drinking overnight.
At around 3:30 AM, I woke up and couldn't go back to sleep. My mind works a little too much for its own good sometimes, and I always run through the absolute worst-case scenarios. What if he was colicking, and twisted something when he lay down for the night? What if there was a blockage, and everything that I'd already seen him pass was stuff that had already been past the block? What if he had a tumor growing in his gut, and that was why things weren't passing quite right? What if, what if, what if?
So at 4 in the morning I found myself in the barn, my sleepy horse blinking blearily at me from his stall. But he was happy to see me, and happy to snarf down the handful of grain I offered him to check his appetite. His TPR, gut sounds, and all were still normal. After observing him for a bit, and nabbing a manure sample before he could kick dirt and bedding all over it, I went back home to sleep some more.
The vet came out the next day, drew the blood for Lyme, and looked him over. He said he could possibly be fighting off the early stages of a virus, and indeed, he was a bit more tired than he had any right to be, but none of the other symptoms had changed. He drew more blood for a CBC (which came back unremarkable, except for the fact that his red count was just at the low range of normal) and said to keep observing him. My vets have figured out by now that I am wee bit obsessive and knew that I'd have them out there in a heartbeat if anything changed; but with no solid, definitive symptoms to go on, we couldn't do anything anyway. I added a bit of U7 and RedCell to his feed and put him on a 7-day Sand Clear treatment just in case.
The vet was a bit concerned, however, about some much more subtle symptoms. He noted that I'd already clipped him, and my explanation that he usually grew a heavy coat and worked too hard to wear it all winter. He said that between the coat growth, and the beginnings of fat deposits in some key places (his sheath and eyes), that Willie might be starting to show signs of being pre-Cushing's.
I don't know that I agree...
- His eyes were a bit puffy that day, but only due to the spurt of warm weather kicking up his allergies -- it's why he wears a fly mask in the summer. They are normal-looking otherwise, and does not have the signature deposits OVER his eyes.
- His winter coat has been known to get ridiculously thick in the past. But something I didn't think about until after the vet left, is that for most of the winters that I've had him, Willie was kept at a place with ridiculously short turnout, ending as early as 1PM at one barn. It always sheds out clean in the spring, and I only clip him for the selfish reason of being able to keep him in full work in the cold weather. This year he is on pasture turnout 24/7 (unless he's sick) and his coat was not quite as woolly, but it still grew thick enough to warrant clipping just after Hallowe'en.
- As far as fat deposits go, well, quite honestly my boy is a little bit chunky. I've been riding but not quite as much as I would like, and he is thriving on all this pasture and good food nonsense. If he were jumping and galloping more I wouldn't want him packing around the extra pounds, but right now he's a juuust barely a 6 on the Henneke scale .
All the same, I don't think it would hurt to keep an eye on him and act, for the time being, as if he IS pre-Cushing's. I already had him on a fairly low-starch feed, and though he was getting a small portion (half a pound per feeding) of sweet feed to help his supplements stick, I've taken him off of it completely. He's seeing a large reduction in the amount of cookies he gets, and I'm finding/making more low-sugar options. Testing for Cushing's has to be done seasonally, so he should get done at the end of the month.
The good news is, whatever NQR oddness Will was suffering from, he seems to be over it. None of his pasturemates have shown any symptoms, which means it's not contagious, and after having off for a week he's feeling just fine. This morning he let me know that he hasn't been working nearly hard enough, and took off bucking and squealing around the pasture when I went to feed him and change his blanket. Goofy old man!
More good news, too: whenever the vets stop by I have them check Will's eyes. After last summer's mysterious affliction (check the "eyes" tag for all the posts) I've been monitoring him closely. Knock on wood, this time around the vet said the same thing that one of his partners did in the spring -- there are some normal age changes, but nothing worrisome, and no indication of last year's woes. Personally, I'm completely fine with it remaining forever an unsolved mystery, so long as it never comes back!
I am almost caught up with posts and ready to take on a blog challenge or two... If I'm feeling really ambitious I may even start up with the weekly riding logs again.



















