Adrenal disease, a growth of the adrenal glands that can be either hyperplasia or cancer, is most often diagnosed by signs like unusual hair loss, increased aggression, constant grooming of owner or other ferrets as well as themselves, difficulty urinating (caused by an enlarged prostate) or defecating, or agitation when urinating, and (in the case of females) an enlarged vulva. Signs of an enlarged prostate should be considered an emergency; even if the growth is benign, it can still cause a hormonal imbalance which can have devastating effects on the ferret’s health.
Treatment options include surgery to excise the affected glands, melatonin implants, which treat the symptoms but not the disease itself, and/or hormone therapy. The causes of adrenal disease are as yet uncertain, but speculated triggers include unnatural light cycles, diets based around processed ferret foods, and prepubescent neutering. It has also been suggested that there may be a hereditary component to adrenal disease.
Adrenal disease is usually detected during the spring or fall, as it affects the hormones that make the fur grow. When affected ferrets shed their winter coat, the fur does not grow back. The hair loss pattern is usually very specific for adrenal disease. It begins at the base of the tail and then continues up the back. Ferrets treated for adrenal disease may suffer temporary but severe hair loss as their bodies recover.
Ferret with Adrenal Disease. Source: Stacy Lynn Baum, 2001
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