What should I check if my horse has stocking up with a heat in the leg?
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Overview
If your horse has stocking up and the leg feels warm, check the leg carefully for cuts, swelling, pain, heat and any change in how they’re moving. Stocking up is often linked to reduced movement or fluid build-up, but heat means it’s worth looking more closely because there can be several possible causes.
Things To Check
1. Check whether the swelling and heat are in one leg or both, and whether it’s higher up the leg or around the lower limb.
2. Look for any cuts, scrapes, mud fever-type scabs, rubbing, insect bites or discharge on the skin.
3. Feel the leg from top to bottom and compare it with the other limbs for warmth, firmness and any painful areas.
4. Watch how your horse walks at rest and in hand. Any shortness of stride, stiffness or reluctance to bear weight matters.
5. Check recent turnout, stabling, box rest, travel or lack of movement, as these often affect leg filling.
6. Look at the hoof too, especially if there’s mud, a strong smell, bruising or a change in how the foot is landing.
7. Note whether the heat appeared after exercise, grooming, bandage removal or a change in weather or ground conditions.
Common Causes
The most common reason for stocking up is reduced movement, especially after standing in for long periods. Mild fluid build-up can also happen after travel, box rest or a quiet day in the field.
Heat can also come from a minor knock, skin irritation, a small wound or mud-related skin trouble. Less commonly, it may be linked to inflammation deeper in the leg, a hoof problem or infection, which is why the whole leg needs checking rather than just the swelling.
What To Do
Start by checking the leg and hoof carefully and comparing both sides. If your horse is otherwise bright and sound, gentle movement, regular turnout where suitable and keeping an eye on whether the swelling goes down after exercise can all help you judge if it is settling.
Keep the leg clean and dry, and make a note of any changes in size, heat or comfort. If the swelling is linked to muddy turnout, washing and drying the leg carefully can help you keep the skin in better condition.
When To Contact A Vet
Call your vet if the leg is very hot, painful, rapidly getting bigger, or if your horse is lame, dull, unwell or has a wound, discharge or broken skin. It’s also sensible to get advice if the swelling doesn’t improve with movement or keeps coming back.
Products That May Help
If your horse is prone to filled legs or the legs are getting dirty or muddy, a simple routine for leg and mud care may help you keep on top of daily checks and cleaning.
Related Questions
Why do horses stock up in the stable?
When is stocking up in horses more than just fluid build-up?
Can muddy turnout make a horse’s legs feel warm?
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.