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Pituitary pars intermedia dysfunction (PPID), or equine Cushing's disease, is an endocrine disease affecting the pituitary gland of horses. It is most commonly seen in older animals, [ 1 ] and is classically associated with the formation of a long, wavy coat ( hirsutism ) and chronic laminitis .
Cushing's is an umbrella term for conditions caused by elevated cortisol and adrenocorticotropic hormone levels. Cushing's disease most commonly refers to pituitary-dependent hyperadrenocorticism, the most common condition of Cushing's syndrome, but 'Cushing's' is used to refer to all hyperadrenocorticism conditions. [2]
The symptoms of Cushing's disease are similar to those seen in other causes of Cushing's syndrome. [5] Patients with Cushing's disease usually present with one or more signs and symptoms secondary to the presence of excess cortisol or ACTH. [6] Although uncommon, some patients with Cushing's disease have large pituitary tumors (macroadenomas).
Cushing syndrome symptoms. Not everyone has the same symptoms with Cushing syndrome, but the Cleveland Clinic says they may include: Rapid weight gain in the face, abdomen, back of the neck, and chest
Cushing's syndrome is a collection of signs and symptoms due to prolonged exposure to glucocorticoids such as cortisol. [4] [9] [10] Signs and symptoms may include high blood pressure, abdominal obesity but with thin arms and legs, reddish stretch marks, a round red face due to facial plethora, [11] a fat lump between the shoulders, weak muscles, weak bones, acne, and fragile skin that heals ...
Other factors, such as stress, feeding, inflammation, or administration of α-2 agonist drugs such as xylazine and detomidine, can falsely raise blood glucose levels. [1] [11] [12] Horses with persistent hyperglycemia may have type II diabetes. [13]
Pituitary pars intermedia dysfunction, or Cushing's disease, is common in older horses and ponies and causes an increased predisposition to laminitis. Equine metabolic syndrome is a subject of much new research and is increasingly believed to have a major role in laminitis.
[35] [36] Cushing's syndrome can either be exogenous or endogenous, depending on whether it is caused by an external or internal source, respectively. [37] The intake of glucocorticoids, a type of corticosteroid, is a common cause for the development of exogenous Cushing's syndrome. Endogenous Cushing's syndrome can occur when the body produces ...
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