URMC / Encyclopedia / Content Search Encyclopedia Disorders of the Adrenal Glands Many disorders of the adrenal glands require clinical care by a physician or other health care professional. Listed in the directory below are some of the conditions, for which we have provided a brief overview. Underactive Adrenal Glands / Addison's Disease Overactive Adrenal Glands / Cushing's Syndrome Tumors / Pheochromocytoma