Changes

==Signalment==

==Signalment==

RAO is an inflammatory obstructive airway disease

RAO usually becomes apparent in middle-aged and older horses, and persists for life^allen. There is some evidence that there may be a genetic component to the disease, as many horses do not suffer RAO when they are housed in environments that can provoke clinical disease in others^marti.

that usually becomes apparent in middle-aged and older

horses. Once it is clinically evident, the susceptibility to

disease persists for the life of the horse; however, if successfully

managed, horses can remain in remission with

==Diagnosis==

==Diagnosis==