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Discuss Weird Sweat Spot at the Horse Health forum - Horse Forums.

This is a little odd to explain; it's not so much a health concern, but ...
  1. #1
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    Weird Sweat Spot

    This is a little odd to explain; it's not so much a health concern, but I'm curious if anyone else has ever experienced this particular phenomenon.

    I have two horses, one TB, one Irish Sporthorse. The TB is a dark bay, the ISH is a dapple gray. Both have this one spot on the left sides of their necks where they will inexplicably get a damp, sweaty spot. It's more or less in the area where you would give an IM injection, but the spot will show up at odd times, without any obvious cause. Both horses had that spot bleach from the sweat, the grey has a little orangey patch and the bay turned mousy in that area, about the length of a pen and a couple of inches wide. What's odd is that this year it seems less pronounced in the TB, who hasn't been in work, but the ISH's is about the same as last year.

    Does this make sense? Any thoughts? The ISH has a microchip, and for a while I'd thought that it was from the place where the chip had been embedded, but I realized that 1) it was the wrong place and 2) the TB has had this since before the ISH, and has no microchip. Is it just a long term reaction to a vaccination? Why would it stick around for that long?

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    THe rein wouldn't happen to rubbing on that particular spot by any chance?
    I may be way off base especially if its in the wrong place for the rein, I just know some rides i work more on one rein than the other causing the outside rein to lie against the neck more than the inside one and that side of the neck is just that little bit more sweaty or lathered, or a larger spot.
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    You see, the spot doesn't show up just when I'm riding, it will show up after they're out in the field all day when it's hot. It's also running more vertical, not as horizontal as a rein rub would be. Plus, like I said, the TB pretty much never gets ridden. It's very odd.

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    HAHA I agree very odd - I at as much of a loss as you are sorry I couldn't be more help!
    Living A healthy lifestyle deprives you of fat and lethargy
    One man's wrong lead is another man's counter canter
    Soft hands don't come from long reins or open fingers - but from a elastic elbow
    http://kiwieventer.blogspot.com.au/

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    It can definitely be a side effect from injections... if the needle goes down through a sweat pore enough to damage it. It can't really be predicted when it will happen, I don't think it means anyone did anything wrong even, it's just a freak possibility when giving shots. I've seen it in a horse or two over the years.

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    That's kind of what I was wondering. It did seem like the only possibility was something injection-related. It's so odd that it happened to both horses. Thanks for the insight!

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    My younger horse has one of these spots as well. I have had a few conversations with different people including a vet/equine chiropractor about this and they think it is a damaged nerve. Possibly the needle hit the nerve during the injection??? My horse actually has his on his rump and it started right after he was sick last winter. It finally dawned on me that he was given antibiotic injections in that area.

    I don't know that there is much you can do about it, but my other horse had one on his neck before and I would massage the area. Not much later, his completely went away. I don't know if it was a coincidence, or if the massage helped stimulate the area to induce healing???? You could give that a try and see if it helps at all.

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    I had a freind with a Conamara with a single spot on the are just as the neck blends into the shoulder. The horse would sweat either just on that spot or more in that area than other parts of the body. All kinds of things were done to try and find the problem. It ended up being a damaged nerve system in that area. It was not caused by truama but a muscle/nerve electrical thing. The nerves where causing the muscles in that particular area to twitch and fire more often thus creating a sweat response. I dont know the entire physiology of the problem and have forgotten the name of it. I cannot remember the whole jist of the problem. He also began to show stiffness in that shoulder area thought to be caused by the problem. The horse was euthanized due to a bad colic episode not caused by the problem..
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