When should I call the vet for crusty scabs on my horse’s legs?
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Overview
If your horse has crusty scabs on the lower legs, it’s sensible to call the vet if the area is painful, swollen, hot, oozing, spreading, or making your horse lame. If it’s a mild, dry patch that hasn’t changed much, you can often start by checking the skin carefully and keeping the area clean and dry, but there may be several possible causes, including mallenders or sallenders, mud-related skin irritation, insect irritation, or a bacterial skin issue.
Things To Check
1. Check whether the scabs are on the front or back of the legs, and whether they’re affecting one leg or several.
2. Look closely for redness, swelling, heat, broken skin, discharge, hair loss or a bad smell.
3. Note whether your horse seems itchy, sore, or unhappy when you touch the area.
4. Check if there’s any lameness, stiffness, shortened stride or reluctance to move normally.
5. Think about recent turnout, muddy fields, clipping, grooming, leg washing or changes in bedding.
6. See whether the skin looks dry and flaky, crusty and thickened, or wet and irritated.
7. Check whether flies, rubbing, or constant mud exposure seem to make it worse.
Common Causes
Mallenders and sallenders are a common cause of crusty, dry scabs on the front or back of the legs, usually around the bend of the knee or hock area. They often look like thickened, flaky skin with scabs that can come and go.
Mud, wet conditions and repeated washing can also irritate the skin and make scabs more noticeable or harder to clear.
Less commonly, crusty scabs can be linked to bacterial skin infection, mites, fungal problems, contact irritation from products, or an underlying skin sensitivity.
What To Do
Keep the area as clean and dry as you reasonably can, and avoid picking scabs off, as that can make the skin more sore.
If the skin is dirty, use gentle cleaning rather than repeated harsh washing, then dry the area well afterwards.
Monitor whether the scabs are stable, improving, or spreading, and note anything that seems to trigger flare-ups, such as mud, sweat, or turnout conditions.
If your horse is comfortable, continuing normal movement and sensible turnout may be fine, but avoid anything that seems to rub or irritate the area further.
If the problem keeps returning, is becoming more widespread, or you’re not sure whether it’s simple dryness or something more, it’s worth asking your vet for advice.
When To Contact A Vet
Contact your vet if the scabs are painful, swollen, hot, wet, cracked, bleeding, foul-smelling, or spreading, or if your horse is lame or clearly uncomfortable. It’s also sensible to call if the problem keeps coming back, doesn’t improve with basic care, or you’re unsure whether mallenders, sallenders, or another skin issue is involved.
Products That May Help
If you’re dealing with crusty scabs as part of routine first aid and skin care, this collection may help support sensible day-to-day cleaning and grooming around the area.
Related Questions
Are crusty scabs on a horse’s legs always mallenders or sallenders?
Should I wash crusty scabs on my horse’s legs?
Why do scabs on a horse’s legs keep coming back?
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.