Why does my horse’s mud fever keep coming back in wet weather?
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Read time: 3 minutes
Overview
Mud fever often comes back in wet weather because the skin on the lower legs stays damp, dirty and easily irritated. Once the skin barrier is weakened, even a small amount of mud, moisture or rubbing can make it flare up again. There can be several reasons for repeat episodes, so it’s worth looking at the environment, the skin itself and your horse’s routine rather than assuming it’s the same cause every time.
Things To Check
1. Check whether the flare-up tends to happen after turnout in wet fields, especially where the mud sits around the fetlocks and heels.
2. Look closely for scabs, redness, broken skin, crusting, swelling or a hot, sore area on the lower leg.
3. Notice whether the skin has been left damp after washing, hosing or being turned out in wet conditions.
4. Check if the horse has feathers, clipped hair or sensitive skin that may trap moisture or make the area easier to irritate.
5. Think about whether mud, bedding, rugs or stable conditions could be keeping the area dirty or moist for long periods.
6. See whether the horse is licking, stamping, biting at the leg or seeming uncomfortable when the area is touched.
7. Consider whether the issue is affecting one leg, several legs, or the same spot repeatedly, which can help you spot a pattern.
Common Causes
The most common reason is repeated exposure to wet, muddy ground. Constant moisture can soften the skin and make it more likely to crack, scab and stay irritated.
Skin that’s already been damaged can also be slower to settle, so the problem may keep returning if the area is not kept as clean and dry as practical.
Some horses are simply more prone to soreness on the lower legs, especially if they have feathers, sensitive skin or conformation that keeps the area wetter for longer.
Less commonly, what looks like mud fever may be worsened by other skin irritation, infection or ongoing rubbing, so repeated episodes are worth watching carefully.
What To Do
Try to keep the lower legs as clean and dry as practical without over-washing. If you do wash the area, dry it carefully afterwards.
Reduce time spent standing in deep mud where possible, and look for better-drained turnout or a drier area of the field if you can manage it.
Remove loose mud gently rather than scrubbing hard, as too much friction can irritate already delicate skin.
Keep an eye on whether the skin is improving or whether the scabs, soreness or swelling are spreading. A simple photo diary can help you spot patterns in wet weather.
If the horse is prone to repeat flare-ups, building a consistent daily leg-check routine during wet spells can make it easier to catch changes early.
Products That May Help
For horses that are regularly exposed to muddy turnout, a practical leg and hoof care routine can be useful as part of day-to-day management.
Related Questions
How can I tell mud fever from a simple muddy leg?
Should I wash my horse’s legs every day in winter?
Why does mud fever keep coming back on the same leg?
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.