Why do my horse’s pasterns keep becoming crusty even when the mud is gone?
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Overview
If your horse’s pasterns are still going crusty after the mud has gone, it’s often because the skin is still irritated, not because the original trigger has completely cleared. The area may be dealing with lingering scurf, mild inflammation, sweating, rubbing, or a skin problem that needs a bit more attention than simple mud management.
There are several possible causes, and you usually can’t tell the exact reason just by looking once. The good news is there are a few sensible checks you can do at home before deciding what to do next.
Things To Check
1. Check whether the crusting is on the back of the pasterns, inside the heels, or spreading further up the leg.
2. Look closely for redness, swelling, heat, broken skin, discharge, or areas your horse reacts to when touched.
3. Notice whether the skin is dry and flaky, greasy, damp, or scabby, as that can point towards different causes.
4. Think about whether it gets worse after turnout, exercise, clipping, washing, or grooming.
5. Check whether there’s still any wet bedding, damp tacky mud, sweat, or dirty feathering around the area.
6. See if your horse is stamping, brushing, or rubbing the legs, which can keep the skin irritated.
7. Check the rest of the horse for similar patches, especially on the heels, fetlocks, or lower legs.
Common Causes
The most common reason is lingering skin irritation after mud exposure. Even when the field looks drier, the skin can stay sensitive and keep forming crusts.
Dry skin, scurf, or repeated washing can also leave the pasterns flaky and prone to crusting, especially if the skin barrier is a bit unsettled.
Rubbing from wet legs, feathers, or close contact with turnout surfaces can keep the area irritated and stop it settling properly.
Less commonly, there may be a more persistent skin condition, including mallenders or sallenders, which can cause thickened, crusty, flaky skin on the lower limbs.
If there’s swelling, soreness, discharge, or the horse seems uncomfortable, another skin issue may be contributing and it’s worth getting a vet to assess it.
What To Do
Keep the area as clean and dry as you can without over-washing it. A gentle wipe or careful wash may be enough if the skin is only lightly soiled.
Avoid picking at the crusts, as that can make the skin more sore and delay things settling down.
Reduce anything that seems to make it worse, such as prolonged wet turnout, muddy gateways, sweaty legs, or harsh grooming over the area.
Check the pasterns daily for change. If the skin is improving, you should see less crusting, less redness, and a calmer surface over time.
If it keeps returning, try to note exactly when it happens and what the skin looks like each time. That pattern can be very helpful if you need veterinary advice later.
Related Questions
Is crusty skin on the pasterns the same as mud fever?
Can washing my horse’s legs too often make the skin worse?
When should crusty pasterns be checked by a vet?
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.