What condition is characterized by a tumor in the pituitary gland in horses?

Cushing's Syndrome, also known as Pituitary Pars Intermedia Dysfunction (PPID), is characterized by a tumor (or hyperplasia) in the pituitary gland of horses. This condition leads to an overproduction of hormones, particularly adrenocorticotropic hormone (ACTH), which causes various physiological changes in the horse's body.

Common symptoms of Cushing's Syndrome include excessive drinking and urination, a long curly coat that does not shed properly, muscle wasting, and increased susceptibility to infections and other illnesses. Identifying this condition is crucial for appropriate management and treatment, as hormonal imbalances can significantly affect a horse's overall health and well-being.

In contrast, other conditions listed, such as Equine Metabolic Syndrome, Navicular Disease, and Laminitis, are not primarily associated with pituitary tumors and involve different underlying mechanisms and treatments. Understanding Cushing's Syndrome's distinct relationship to the pituitary gland is vital for effective diagnosis and care in equine health management.