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  • frankie2005 Original Poster
    Topics Started: 1Replies Posted: 0

    I have a 8yr old QH Mare and this summer she started having hives. we have not changed anything with her. she will have them at times when outside but other times she is indoors and still gets them! She is on antihist and trihist and still getting hives. Does anyone have any suggestions. When we give her Dexamethasone they go away. Any suggestions?

    Topics Started: 0Replies Posted: 15

    I bought my TB as a 2 year old in November and the following spring she developed hives. She had never had them before according to her former owner. I had 2 vets see her and one gave her antihistamines which did not help at all. the other vet suggested omega 3 fatty acids and she is now on Horseshine. WE could never find a specific cause. The horseshine helped dramatically and I also used medicated shampoos which helped also. I got that at petsmart. A friend had a benadryl shampoo which also worked but its not made any more. I managed to avoid dexamethasone though I used topical steroid cream on the biggest welts. Once the weather cooled off she got better and this year she has only had a few hives. She remains on the Horseshine. I tried everything to find a cause. new brushes. different hay and bedding and different feed but the horseshine made the biggest difference.

    Topics Started: 1Replies Posted: 7

    I can’t say my Palomino QH has had hives as often as you two, but I’ll say when I come across it, usually it’s after a hot day with tons of bugs/flys/ and all those nasty flying things.

    We do spray and sheet our horses, but his neck is always exposed.

    I usually rinse him with cold water, and walk him to cool him down since he is usually sweated. After he is cooled off I dry him with a towel and apply Vetryicn (spelling?) for topical skin irritations.

    Though I don’t have much about solving this, please consider this:

    Maybe the horse had eaten a bad plant in pasture
    or, Rolled on a plant with oils that they reacted to.
    or, Bug bites? or stress?

    also, I wish the benedryl wash was still in manufacturing, but I know horses can be given Benedryl Allergy Pills. I don’t know the proper dosage. Ask your vet and see. I know we administer the pills to our show dogs who have bad allergies. It is 2 pills morning and night for a normal sized golden, 70 to 80 lbs?

    All of these ideas came from people who told me what causes them for their horses. I believe my QH had reacted from bugs/flys both times since those were the worst seasons the horse flys were around. Good luck!

    Topics Started: 0Replies Posted: 15

    I have used benadryl tablets crushed and given in an oral syringe. I dose it by weight and gave 10-12 for my 1500 pound horse. Atarax was the antihistamine the vet gave me which was wickedly expensive and not helpful. Atarax and benadryl are the same class of medicine. I gave the benadryl for an acute case of enormous hives with swelling of the face from a beesting. I gave tagamet with it as that is an H-2 blocker. the vet was not nearby and I did not have any dexamethasone on hand.It worked well but I wouldn’t want to give benadryl for a chronic case of hives as it is sedating and doesn’t seem to work very well for that. I now keep dexamethasone in the barn but just for emergency reactions. It may temporarily get rid of chronic hives but they will likely come back

    Topics Started: 0Replies Posted: 1

    I bought a gelding that lived in Missouri since he was a year old and he was 13 when I bought him, we moved him to our house about 20 miles down the road. In the spring he developed hives, we were in and out of the vet clinic often because they got so bad. This went on every May-September for about 2 1/2 years until I met a vet at a racetrack and he told me to try ACTH. Since giving the ACTH he has not had hives. I had to work with my local vets to get the ACTH, I ended up getting it from Wedgewood pharmacy.

    dakotasmom dakotasmom
    Topics Started: 6Replies Posted: 4

    My 13 y/o QH/TB cross got hives out of nowhere December of 2010 for the first time. He had never had them before and nothing in his life had changed. It took Dexamethasone to get rid of them. My vet said horses don’t have the same receptors to respond to antihistamines (like benadryl) like humans do, and they don’t work so don’t even bother. The dex worked great.

    He’s gotten them ever since that first episode. I have ruled out EVERYTHING! He’s been at different barns, different hay, different bedding, no bedding, no blankets, taken him off grain and supplements, tried supplements like omega horse shine. I can’t for the life of me find a trigger. He gets them all times of the year for no apparent reason.

    I always give 8mg dex oral tablets once a day until they’re gone, which is a pretty low does. It works in about 48 hours. Sometimes they’ll be gone for months, sometimes they’ll be back in a few days.

    Last week I tried not giving him the Dex to ‘ride them out’ and his face is so swollen now that he can’t hardly open his eyes and the hives are oozing fluid and have actually broken open into sores. So now he’s on dex and antibiotics.

    I’m at my wits end and don’t know what to do. Someone yesterday mentioned trying weed free hay, so I might give that a go. I’m considering trying a grain free diet, again. If it weren’t so cold now I would give him an antimicrobial bath, I don’t think they made a difference but at least I feel like I’m doing something.

    I know this doesn’t help you, but you’re not alone.

    Topics Started: 1Replies Posted: 22

    I had a TB mare that out of the blue broke out in hives. I thought she somehow developed an allergic reaction to flies or bugs, but it turned out that I started using a different fly spray and her allergic reaction was to that. Have you started using a different fly spray, or using a different sheet or saddle blanket? Is she in a new pasture where she may be rubbing against different types of flora she’s not used to? I know these questions may be longshots, but I hope they helped. Good luck.

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