PPID: An Endocrine Disease

Pituitary pars intermedia dysfunction (PPID, or equine Cushing’s disease) is caused by an enlargement of the pituitary gland’s middle lobe (the pars intermedia), which results in an overproduction of hormones that regulate bodily functions. Learn more about this disease in our slideshow.
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Michelle Anderson is the former digital managing editor at The Horse. A lifelong horse owner, Anderson competes in dressage and enjoys trail riding. She’s a Washington State University graduate and holds a bachelor’s degree in communications with a minor in business administration and extensive coursework in animal sciences. She has worked in equine publishing since 1998. She currently lives with her husband on a small horse property in Central Oregon.

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