UK Aged Horse Research Center
EMS vs. PPID: What’s the Difference?
Equine metabolic syndrome (EMS) and pituitary pars intermedia dysfunction (PPID) are common, hormone-related horse health conditions. Because they can affect many of the same horses—sometimes even developing concurrently in a single horse—they're easily confused.
Fortunately, there are a few key differences that can help differentiate EMS from PPID. Here's what to look for!