It’s had many names–from azoturia to Monday morning sickness, but, despite the disease being well-recognized for hundreds of years, the causes of the equine muscle disorder most commonly known as tying up, have been elusive. Stephanie Valberg, DVM, PhD, Dipl. ACVIM, Dipl. ACVSMR, explained the history of this disease from ancient cart horses to modern genetic testing and took the audience at the Frank J. Milne lecture at the AAEP Convention into the current understanding of equine myopathies.

This mare from the University of Minnesota Equine Center’s PSSM herd is experiencing a tying-up episode with associated muscle stiffness, profuse sweating, and a reluctance to move.
Image courtesy of Dr. Stephanie Valberg

Create a free account with TheHorse.com to view this content.

TheHorse.com is home to thousands of free articles about horse health care. In order to access some of our exclusive free content, you must be signed into TheHorse.com.

Start your free account today!

SIGN UP

Already have an account?
Login and continue reading.