What should I do if my horse’s ears are swollen after fly bites? | arlo.® Atlas
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Overview
If your horse’s ears are swollen after fly bites, it’s often a local reaction to irritation and itching. The swelling may settle with simple care, but it’s sensible to check the ears carefully because several things can look similar, including bites, rubbing and skin soreness.
Things To Check
1. Check whether the swelling is on one ear or both ears, and whether it has come up quickly or gradually.
2. Look closely for redness, broken skin, scabs, discharge, heat or obvious bite marks.
3. Notice if your horse is rubbing the ears, shaking the head, stamping or seeming more uncomfortable than usual.
4. Check for signs the ear is painful to touch, or if your horse objects when you gently inspect it.
5. Think about recent turnout, stable time, grooming or fly pressure, especially at dawn and dusk.
6. Check whether there are other itchy areas, such as the face, mane, tail or belly, which can suggest a broader fly irritation issue.
7. Look for any signs that the ear flap or nearby skin has been scratched enough to become sore or infected.
Common Causes
The most common reason is a local reaction to fly bites. Some horses develop more obvious swelling, redness and itching than others, especially around the ear edges and tips.
Rubbing can make the swelling look worse. If the horse has been trying to get relief, the skin may become more irritated or scabby.
Less commonly, the skin may be reacting to other biting insects, dust, sweat, grooming products or a small skin infection starting where the bites were scratched.
What To Do
Start by keeping the area clean and watching it closely over the next day or so. If the skin is intact, a gentle clean and dry approach is usually the safest first step.
Try to reduce fly exposure where you can. That may mean changing turnout times, using fly rugs or masks if your horse tolerates them, and keeping the stable and surroundings as fly-free as practical.
Avoid picking at scabs or overhandling the ears. If your horse is rubbing a lot, check that nothing in the headcollar, rug or tack is adding extra irritation.
If the swelling is mild and your horse is otherwise bright, comfortable and eating normally, it may be reasonable to monitor it closely. If it’s getting worse, becoming painful, or not improving, it’s sensible to speak to your vet.
When To Contact A Vet
Contact your vet if the swelling is rapid, severe, hot or painful, if there’s discharge or broken skin that looks infected, or if your horse seems unwell. It’s also worth getting advice if the problem keeps returning or doesn’t settle with basic fly management.
Products That May Help
The Horse Fly Sprays & Summer Care collection may be useful if you’re looking to support your horse’s day-to-day fly-season routine and help reduce the irritation that often comes with bites.
Related Questions
Why do some horses get worse reactions to fly bites?
How can I tell if an ear swelling is from flies or an infection?
What’s the best way to reduce fly irritation on a horse’s face and ears?
Atlas is here to support owners with practical, easy-to-understand guidance. It is not a substitute for professional veterinary advice. If you're concerned about your animal's health, symptoms worsen, or something doesn't feel right, contact your vet.