High Quality Content by WIKIPEDIA articles! Adrenal gland disorders (or diseases) are conditions that interfere with the normal functioning of the adrenal glands. They are characterized by adrenal insufficiencies, where there are deficiencies in the availability of steroids that are produced by the adrenal glands. Adrenal Gland disorder is rather prevalent in small animals including rabbits, ferrets & guinea pigs. They may cause hyperfunction or hypofunction, and it may be congenital or acquired. Adrenal gland disorders are challenging to diagnose, but if left untreated, they are life threatening and can be very deadly.