Understanding and Managing EPSM in Horses
The symptoms were subtle at first: a slight stiffness in the hindquarters after a routine workout and a strange “tying up” sensation that looked like simple fatigue. But for a draft-cross or a heavy-muscled Quarter Horse, these aren’t just quirks—they are the flashing red lights of Equine Polysaccharide Storage Myopathy (EPSM). I’m Miles Henry (Louisiana …