Equine & Livestock Product & Promotions Guide

August 2023

Animal Health Solution - a Henry Schein Animal Health magazine for veterinary professionals

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17 August 2023 | Product and Promotions Guide Insect bite hypersensitivity (IBH) is a common summer problem, as Culicoides (i.e. gnats, midges, no-see-ums) and other biting flies become more active. Different than typical insect bites, IBH is caused by an allergic reaction that certain horses have to the insects' saliva, and clinical signs can range from hives to hair loss. 1 Once you've tested for and confirmed IBH, it's important to talk to your clients about different treatment options to try to ease their horses' suffering. Talking About IBH Treatments Part of why it's so important to make sure that owners know the causes behind IBH is that some of the best management options are environmental and not medical. Because these biting insects are most active at dawn and dusk, your clients should avoid turning the horses out at those times. When the horses are in the barn, box fans should be set up and kept on to ward off midges with the strong air currents. Regular barn maintenance, like manure removal and refreshing still water, can interrupt the breeding cycle, which cuts down on future bites and allergic reactions. 1 On top of these environmental changes, there are a few options that you can offer for short-term relief and repellancy. Through your Covetrus ® Prescription Management storefront, you can recommend dermatological sprays to soothe the irritation, as well as repellents to prevent new bites. Work with your clients to choose the correct repellent, as the active ingredient in most fly sprays, pyrethrin, breaks down when exposed to the ultraviolet light from the sun; a good fly spray will also include sunscreen to lengthen the effectiveness. You can also offer corticosteroids to reduce inflammation. 1

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