Why is my horse still getting rain scald even with a rug on? | arlo.® Atlas
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Overview
Yes, a horse can still get rain scald even with a rug on. The rug may be letting moisture in, trapping damp against the coat, or the skin may already be prone to this problem. In some cases, the issue is less about the rain itself and more about how wet, warm, or dirty the coat stays underneath.
Things To Check
1. Check whether the rain scald appears in places the rug covers, especially along the back, quarters or where the rug may rub.
2. Look under the rug for dampness, sweat, mud, or matting in the coat after turnout or stabling.
3. Check the rug fit for slipping, tightness, broken straps, or gaps that could let water in or cause rubbing.
4. See whether the rug is staying wet for long periods rather than drying between uses.
5. Look for scabs, raised bumps, sore patches, hair loss, or skin that feels hot or tender.
6. Consider whether the horse has been clipped, heavily coated, or turned out in persistent wet weather.
7. Think about whether mud, sweat, or dirty bedding may be adding to the problem.
Common Causes
The most common reason is that moisture is being trapped under the rug. Rain scald often develops when the coat stays damp for long periods, especially if the horse is wet, sweaty, or the rug doesn’t breathe well.
Another common cause is rug fit. A rug that leaks, slips, rubs, or holds wet patches against the skin can make the coat more vulnerable.
Some horses are simply more prone to skin irritation in wet weather, particularly if they have a thick coat, a clipped coat, or skin that’s already a bit compromised.
Less commonly, what looks like rain scald could be another skin issue, such as rubbing, mites, or a different type of dermatitis, so it’s worth keeping an open mind if it doesn’t behave as expected.
What To Do
Take the rug off when conditions allow and check the skin properly. If the coat is damp, let it dry fully before replacing anything.
Use a clean, well-fitting rug that’s appropriate for the weather, and avoid leaving wet or muddy rugs on for long periods.
Keep the affected area as clean and dry as you reasonably can. If scabs are present, avoid picking at them, as that can make the skin more sore.
Monitor the area for a few days and note whether it improves with better drying, rug changes, or cleaner turnout conditions. If the problem keeps returning, reviewing the horse’s routine, coat condition, and rugging setup can be helpful.
It can also help to check whether the issue worsens after heavy rain, sweating, or turnout in muddy fields, as that often points to moisture management rather than one single cause.
When To Contact A Vet
Speak to your vet if the skin is very sore, spreading, swollen, oozing, or your horse seems unwell. You should also get advice if the scabs keep coming back, the area isn’t improving, or you’re not sure it’s rain scald at all.
Products That May Help
If your horse’s coat is getting wet, sweaty or dirty under a rug, a gentle wash routine can help support coat and skin care as part of your normal management.
Related Questions
Can rain scald spread to other horses?
Should I rug a horse with rain scald?
How do I clean rain scald scabs safely?
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.