What should I check if my horse’s ears are crusty or scabby after fly bites?
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Overview
If your horse’s ears are crusty or scabby after fly bites, the first things to check are whether the skin is just healing from irritation or whether there’s something more going on, such as rubbing, broken skin, or a skin problem that needs attention. Fly bites are a common reason, but they’re not the only possibility.
Things To Check
1. Check whether the crusting is only on the ear tips, ear edges, or deeper inside the ear where flies may be getting at the skin.
2. Look closely for redness, swelling, heat, discharge, or areas where the skin has split or bled.
3. Notice whether your horse is shaking their head, rubbing the ears, or reacting when you touch the area.
4. Check whether the scabs are dry and settling or whether new bites and fresh irritation keep appearing.
5. See if there are signs of other insects being a problem, such as stamping, tail swishing, or rubbing in other areas too.
6. Review turnout, stable time, and the time of day. Flies and midges are often worse at certain times and in certain places.
7. Check the ears for any unpleasant smell, thick wax, or moisture that does not look like simple fly irritation.
8. Think about recent grooming, clipping, or tack use that may have rubbed the area and made it easier for flies to irritate the skin.
Common Causes
Fly bites are the most common reason, especially in warm weather when insects are active around the ears and face. The skin can dry out, scab over, and look crusty as it heals.
Rubbing or head shaking can also make small bites look worse, because repeated friction can break the skin and delay healing.
Sometimes midges or other biting insects are involved, particularly if the ears seem very itchy or the problem keeps returning.
Less commonly, crusting can be linked to a skin infection, sensitivity to products, or another skin issue that is making the ears more reactive than usual.
What To Do
Keep an eye on whether the area is improving or spreading over a few days. A small number of dry scabs that are settling can often be managed with careful monitoring.
Keep the ears as clean and dry as you can without over-washing or picking scabs off. Avoid rough handling, because that can reopen the skin and make the area more sore.
Try to reduce fly pressure around turnout and stable time by adjusting routine where possible, especially during peak fly hours. It may also help to note where and when the bites seem to happen most often.
If your horse is repeatedly rubbing or shaking their head, look at the whole picture rather than just the scabs. Ongoing irritation may mean the fly problem is still active or that the ears need a closer look.
When To Contact A Vet
Contact your vet if the ears become very swollen, hot, painful, or start to ooze, or if the skin looks infected rather than simply scabby. Get advice sooner if your horse is very distressed, the head shaking is persistent, or the problem is not improving with sensible routine care.
Products That May Help
If fly bites are part of the problem, this collection may be useful as part of your summer routine and general management around the stable and turnout.
Horse Fly Sprays & Summer Care
Related Questions
Why does my horse keep rubbing his ears in summer?
How can I tell if fly irritation is getting worse?
What’s the best way to check a horse’s ears without making them sore?
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.