‘Equine Asthma’ Now an Official Diagnosis

Inflammatory airway disease and recurrent airway obstruction fall under the “equine asthma syndrome” umbrella.
Please login

No account yet? Register


For the first time since 2007, a group of equine internal medicine experts collaborated and updated the consensus statement on inflammatory airway disease to help facilitate the industry’s understanding of this common, performance-limiting, and potentially debilitating respiratory condition in horses.

“Recurrent airway obstruction, or heaves, seen in older horses and inflammatory airway disease noted in younger horses both resemble asthma in humans,” explained Laurent Couëtil, DVM, PhD, section head of Large Animal Internal Medicine at Purdue University in West Lafayette, Indiana, and lead author of the 2016 American College of Veterinary Internal Medicine Inflammatory Airway Disease Consensus Statement. “Specifically, they are characterized by airway inflammation and accumulation of mucus in the airways.”

Recognizing the similarities between inflammatory airway disease (IAD) and recurrent airway obstruction (RAO) in horses (and humans, for that matter) and asthma, one of the important updates in the consensus statement was the recommendation to adopt the term “equine asthma syndrome” for all horses with IAD or RAO.

“It is important to recognize that even though IAD and RAO are both in the spectrum of chronic inflammatory disease of the airways, they are not a continuum,” Couëtil said. “This means that not all horses with IAD will necessarily develop RAO, but they are at risk. Instead, RAO requires time to develop with permanent remodeling of the airways, whereas horses with IAD can recover

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!

Already have an account?
and continue reading.


Written by:

Stacey Oke, MSc, DVM, is a practicing veterinarian and freelance medical writer and editor. She is interested in both large and small animals, as well as complementary and alternative medicine. Since 2005, she’s worked as a research consultant for nutritional supplement companies, assisted physicians and veterinarians in publishing research articles and textbooks, and written for a number of educational magazines and websites.

Related Articles

Stay on top of the most recent Horse Health news with

FREE weekly newsletters from TheHorse.com

Sponsored Content

Weekly Poll

sponsored by:

What signs does your horse show when he has gastric ulcers? Please check all that apply.
46 votes · 103 answers

Readers’ Most Popular

Sign In

Don’t have an account? Register for a FREE account here.

Need to update your account?

You need to be logged in to fill out this form

Create a free account with TheHorse.com!