Horse Cushings Disease: Welfare-Centered Management

Pituitary Pars Intermedia Dysfunction (PPID/Cushings) is the most common endocrine disorder in older horses. Early diagnosis and treatment significantly improve welfare outcomes.

Key Facts

PPID affects an estimated 15-25% of horses over age 15
Clinical signs include hypertrichosis (long curly coat), muscle wasting, laminitis, and increased drinking and urination
Pergolide mesylate treatment controls clinical signs in the majority of horses and significantly improves welfare
Annual ACTH blood testing allows early diagnosis before clinical signs become severe
PPID horses require lifelong management including dietary modification and increased laminitis monitoring

Welfare Considerations

PPID is a treatable condition whose welfare impact depends heavily on whether it is diagnosed early and managed proactively. A horse with undiagnosed PPID deteriorates progressively — losing muscle, becoming laminitic, and suffering the discomfort of a permanently abnormal hormonal environment. Pergolide treatment can reverse many of these changes and dramatically improve quality of life. The welfare case for annual testing of horses over 15 is strong: early diagnosis enables early treatment and prevents the worst welfare consequences.

What You Can Do

Test horses over 15 years old for PPID annually using ACTH blood testing
Begin pergolide treatment promptly at diagnosis and do not delay due to cost concerns
Manage PPID horses for laminitis risk — restrict grazing, especially in spring and autumn
Work with an equine nutritionist on appropriate dietary management for metabolic PPID horses
Monitor quality of life indicators including willingness to move, coat condition, and demeanor as treatment guides