PPID is a hormonal disorder of older horses causing a long, curly coat that sheds poorly, drinking and weight changes, and a high laminitis risk. Your vet diagnoses it with a blood test and manages it with medication and careful care.
What PPID is
PPID, pituitary pars intermedia dysfunction, is a change in the pituitary gland that disrupts hormone control. It becomes more common with age and, left unmanaged, raises the risk of laminitis and infections, so recognising it matters.
Signs to watch for
Classic signs include a long, curly coat that fails to shed properly, increased drinking and urinating, muscle loss along the topline, a pot-bellied look, lethargy, and recurrent laminitis or infections. Many owners first notice the abnormal coat.
Getting a diagnosis
Do not guess. Your vet can confirm PPID with a blood test, often measuring a hormone called ACTH. Early diagnosis means treatment can start before complications such as laminitis take hold, so test any older horse showing the signs.
Managing it
PPID is usually managed with a daily medication prescribed by your vet, alongside careful management. Regular rechecks let the vet adjust the dose. With treatment, many horses live comfortably for years after diagnosis.
Support with good care
Because PPID horses are prone to laminitis, keep them lean, control sugar and starch, and provide low-sugar forage. Regular clipping helps horses with heavy coats stay comfortable, and a balanced supplement supports the diet. Stay on top of hoof, dental and worming care, as PPID horses are more vulnerable.
