19/08/2025
As autumn approaches, the risk of Atypical Myopathy rises, a devastating muscle disease that can strike horses suddenly and without warning. The disorder stems from eating sycamore seeds, seedlings and leaves. When eaten, they release a toxin that causes significant muscle weakness and damage.
What to look out for:
- Sudden stiffness or weakness
- Difficulty standing or walking
- Muscle trembling or sweating
- Dark, discoloured urine
If you notice any of these signs, contact your vet immediately. Early intervention can save lives.
How to reduce risk:
✅ Avoid grazing where sycamore trees may be present or nearby
✅ Remove fallen seeds and leaves from grazing areas
✅ Fence off access to areas of sycamore trees or where seeds fall
✅ Provide fresh hay and clean water at all times
✅ Seeds and seedlings can be tested to see how strong the toxins are. This can be arranged through your vets
Should you suspect Atypical Myopathy, promptly seek veterinary assistance by contacting us 01738621415.
