The con­di­tion

Your Horse (UK) - - Horse Care -

Equine asthma is a con­di­tion that causes some horses to be hy­per­sen­si­tive to mol­e­cules in the air (known as al­ler­gens). This re­sults in symp­toms that range from mild to se­vere. This hy­per­sen­si­tiv­ity (al­lergy) causes lower air­way in­flam­ma­tion and re­sults in in­creased mu­cus pro­duc­tion and con­stric­tion of the air­ways in the lungs. A par­tic­u­lar type of equine asthma in­volves horses that suf­fer dur­ing sum­mer while spend­ing most of their time out­side. The con­di­tion is bet­ter known as sum­mer pas­ture as­so­ci­ated ob­struc­tive pul­monary dis­ease (SPAOPD). It’s thought that SPAOPD is as­so­ci­ated with an in­crease in air­borne par­ti­cles and en­vi­ron­men­tal al­ler­gens such as pollen, mould spores and my­co­tox­ins. Some horses can be af­fected through­out the year and also suf­fer with the more clas­si­cal form of equine asthma called RAO (also known as ‘heaves’) when sta­bled and on dry roughage dur­ing the win­ter. SPAOPD is most com­monly seen in horses that are aged seven and over.

SPAOPD has been linked to an in­crease in pollen in sum­mer

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