How can I tell if my horse’s hair loss could be ringworm?
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Overview
Hair loss that could be ringworm often looks like small, round patches of broken hair, scurf or crusting, sometimes with a slightly raised edge. It can be itchy, but not always. Because other skin problems can look similar, you can't tell for certain just by looking, but the pattern can give you a useful clue.
Things To Check
1. Look at the shape of the hair loss. Ringworm often starts as round or ring-like patches rather than a random rubbed area.
2. Check whether the hair looks broken off close to the skin instead of fully missing from one rubbed patch.
3. Feel for scabs, crusting, dry scaling or a rough edge around the patch.
4. Notice whether your horse seems itchy, is rubbing on doors, posts or rugs, or is leaving the area alone.
5. Check other horses, tack areas and grooming kit for similar patches or signs of spread.
6. Look for recent changes such as clipping, rug rubs, muddy turnout, sweat, new tack or a change in grooming routine.
7. Keep an eye on whether the patch is staying the same, spreading slowly, or appearing in more than one place.
Common Causes
Ringworm is one possible cause, especially if the patches are round, scabby and spreading to other horses. It is caused by a fungus, and it often spreads by direct contact or through shared brushes, rugs and stable surfaces.
Rubbing from tack, rugs or fencing is another common reason for hair loss, and this often looks less neat than ringworm and sits where pressure or friction happens.
Mud, sweat, minor irritation, insect bites and over-grooming can also lead to patchy coat loss. In some horses, an underlying skin sensitivity or another infection may be involved.
What To Do
Keep the area clean and dry, and avoid picking scabs or brushing the patch hard. Use separate grooming kit items for the affected horse if you can, and wash hands after handling the area.
If possible, note the size, shape and location of the patch, then monitor it for changes over a few days. It also helps to check rugs, tack fit and turnout conditions for anything that might be causing rubbing or damp skin.
If other horses have similar signs, try to reduce shared contact and keep grooming tools, head collars and rugs separate until you know what is going on.
When To Contact A Vet
Speak to your vet if the patches are spreading, if several horses are affected, if the skin is sore or inflamed, or if you are not sure whether it is ringworm or something else. A vet can help confirm the cause and advise on the right way to manage it on your yard.
Products That May Help
If you’re dealing with patchy coat loss or are keeping an eye on skin changes, a gentle wash can be useful as part of a normal grooming routine while you monitor the area.
Related Questions
Can ringworm spread from horse to horse?
How do I stop skin problems spreading on the yard?
Should I keep grooming my horse if the skin looks patchy?
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.