The pituitary gland is found at the base of the brain. Together with the hypothalamus, the pituitary gland controls most of the endocrine (hormone) systems in your body.  When disorders occur in this gland a variety of problems can appear due to either excess or insufficient production of pituitary hormones.  If your doctor thinks you have problems in this area (usually discovered with a series of blood tests) they will refer you to a specialist endocrinologist.