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Adrenal disease

Adrenal Disease is the most common ferret condition I see in clinical practice. This disease is a result of a tumor or hyperplasia affecting one or both adrenal glands. Although this condition can occur at any age, it is most common in ferrets over 3 years of age. Although there are many theories as to the cause of this condition (genetic, environmental, diet, early spay and neuter), the cause is still unknown.

In this condition, the affected adrenal gland produces an excess of sex steroids (estrogen, testosterone and their precursors), which results in the myriad of clinical signs present with this disease. This is a chronic, debilitating disease that can greatly affect the ferret’s quality of life. Although the affected adrenal is usually benign (adenoma or hyperplasia), malignancy (carcinoma) is present in 26% of the cases. Unlike other species, malignant adrenal carcinomas in the ferret rarely metastasize (or spread), but can be locally aggressive attaching to adjacent organs and growing quite large.

In recent years we have made great advances in recognizing and treating this common ferret disease.

Clinical Signs

Classic Clinical Signs

  • Alopecia (hairloss)
  • Swollen Vulva (female ferrets)
  • Return to Male Sexual Behavior/Aggression
  • Straining to Urinate

Other Common Clinical Signs:

  • Lethargy
  • Muscle Atrophy
  • Pruritis (itchy skin)

As a ferret owner or veterinarian, it is important to become familiar with the common clinical signs associated with adrenal disease in the ferret. Some of the clinical signs that occur are considered classic clinical signs and, when present, are highly suggestive - almost diagnostic - of this condition.

It is important to note that although hairloss is the most common and most obvious clinical sign that occurs, this is not only a cosmetic disease. This is clearly a chronic debilitating condition that can last for months or years affecting the ferrets quality of life. Some ferrets can live with this disease for years while others can become debilitated or develop life threatening complications of this disease within months. Unfortunately, we do know that ferrets are very stoic and hide their illnesses well.

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