Clinical history is critical to diagnosis. The horse with overt heaves, or recurrent airway obstruction (RAO) will have a history of having had a recurrent (hence the name) breathing problem,
Heaves, otherwise known as recurrent airway obstruction (RAO) and inflammatory airway disease (IAD), allergic airway disease, small airway disease and COPD are all diseases that fall under the spectrum of equine asthma.
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