How to protect horses from atypical myopathy *H&H VIP*

Autumn traditionally sees a peak in cases of the rapid-onset condition atypical myopathy (AM), now known to be linked with trees from the Acer family. This acute muscle disease, sometimes termed atypical myoglobinuria or seasonal pasture myopathy, is caused by the ingestion of some species of Acer tree seeds (such as the sycamore) that contain the toxin hypoglycin A. The consequences can prove distressing and frequently fatal — muscle groups break down, both skeletal muscles and potentially those linked to cardiac and respiratory function, and renal failure can follow.