PET WELLBEING ADRENAL GOLD 4OZCushing's Disease Cushing's disease results from an excess of adrenal gland hormones. It is a common side effect of drugs such as corticosteroids, which are often prescribed to treat canine arthritis, allergies and other ailments. Cushing's disease can also result from a benign tumor on one of the adrenal glands or the pituitary gland. Symptoms of Cushing's disease include: Increased thirst and appetite Frequent urination Loss of hair Skin problems