Why does my horse’s skin look sore and infected under the scabs? | arlo.® Atlas
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Overview
If the skin under the scabs looks sore, raw or a bit infected, rain scald is one common reason, especially after wet weather. It can also look similar to other skin problems, so it’s worth checking the area carefully rather than assuming it’s just scabs that need picking off.
The skin may look red or crusty because the top layer is irritated, trapped moisture has softened the skin, or there’s a secondary skin infection starting. You can often tell a lot by where it is, how widespread it is, and whether your horse seems bothered by it.
Things To Check
1. Check whether the sores are on the back, rump, neck or areas that stay wet after rain or turnout.
2. Look closely for redness, heat, swelling, discharge, broken skin or scabs that lift easily.
3. Notice whether your horse is itchy, uncomfortable when groomed, or sensitive to being touched there.
4. Think about recent wet weather, muddy turnout, sweating under rugs, or a long, damp coat.
5. Check whether the scabs are spreading, thickening, or appearing in more than one patch.
6. Look at the surrounding coat for matted hair, dampness, dandruff, or areas that are not drying properly.
7. Keep an eye on whether your horse seems well in themselves, or whether there are signs of discomfort beyond the skin problem.
Common Causes
Rain scald is often the most likely cause, especially when the skin has been wet for long periods. It commonly starts with small scabs and can leave the skin underneath looking sore once the crusts loosen.
Other possibilities include general skin irritation from moisture, rubbing from tack or rugs, or a mild bacterial skin infection developing in already damaged skin. Less commonly, a fungal or parasite-related skin problem can look similar at first.
Because several skin conditions can overlap, it’s best not to pick scabs off aggressively or assume the problem is simple once the surface looks dry.
What To Do
Keep the area as dry as you can and try to reduce further irritation. If your horse is coming in wet, use clean towels and a gentle drying routine rather than rubbing hard.
Avoid picking at the scabs. That can leave the skin more exposed and may make it harder to tell whether the problem is improving.
Check turnout, rug fit and grooming routines to see if anything is keeping the skin damp or causing rubbing. If the coat is thick or matted, careful grooming may help with airflow and drying, but don’t irritate the area more.
Monitor the patches over the next few days. If they spread, become more painful, or don’t start to look calmer with sensible care, it’s sensible to speak to your vet for advice.
Products That May Help
If your horse’s skin is scabby, greasy or sore-looking, a gentle washing routine may help support day-to-day coat and skin care without overhandling the area.
Related Questions
Should I remove the scabs from rain scald?
Can rain scald spread to other horses?
How do I keep my horse’s skin dry in wet weather?
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.