05/11/2026
With warm weather comes pollen, bugs, mites, and environmental allergens that cause many horses to become itchy. There are several causes of allergy related skin conditions, but there are also other pruritic (itchy), scaley, or nodular skin conditions not caused by allergens. Differentiating the cause of scales, nodules, and pruritis is essential for best treatment! There are several things your vet may ask such as if the clinical signs are seasonal, when they are the worst, was the itching before or after the lesions, etc. as well as performing a complete exam.
If your horseโs condition appears to be allergy based, your vet may start your horse on immune support supplements such as spirulina, anti-histamines, and potentially a course of steroids if signs are advanced enough. Topical itch relief sprays and shampoos as well as cortisone creams can also be used to help soothe and stop the itch and heal any sores created from itching. These topical treatments usually include an anesthetic, anti-inflammatory (steroid), and soothing ingredient (oatmeal or aloe). There are also several management changes that can be done including keeping fly boots, sheets, and masks on through the warmer months. Applying fly sprays on your horse or having a fly spray system or fly traps in the barn as well as starting a feed through fly control such as fly predators. Also, some horses may need to be stalled with a fan when insect activity is high and only turned out during times of the day when insect activity is less.
If a particular case appears to be more than allergies, further diagnostics such as skin scrapes, hair samples, cytology, biopsy, or fine need aspiration may be needed. As always, consult with your veterinarian to come up with a plan that will work for your horse!