Equis ISSN 2398-2977

Seasonal pasture myopathy - atypical myopathy Owner Factsheet

Contributor(s): Nicola Menzies-Gow, Rachael Conwell

Atypical myopathy is a highly fatal muscle disease of grazing horses. Ingestion of the toxin hypoglycin A, found in sycamore seeds, has been identified as the cause of the disease. Clinical signs can vary from mild lethargy and muscle stiffness to sudden death, with numerous horses on the same grazing potentially affected. Early diagnosis and rapid implementation of supportive treatment is vital, however fatality rates remain high.
Sycamore tree and seeds

What is atypical myopathy?

This article is available in full to registered subscribers

Sign up now to purchase a 30 day trial, or Login

What are the signs of atypical myopathy?

This article is available in full to registered subscribers

Sign up now to purchase a 30 day trial, or Login

How is atypical myopathy diagnosed?

This article is available in full to registered subscribers

Sign up now to purchase a 30 day trial, or Login

Can my horse be treated?

This article is available in full to registered subscribers

Sign up now to purchase a 30 day trial, or Login

What is the prognosis for my horse?

This article is available in full to registered subscribers

Sign up now to purchase a 30 day trial, or Login

How can I prevent my horse from contracting atypical myopathy?

This article is available in full to registered subscribers

Sign up now to purchase a 30 day trial, or Login


ADDED