Your thyroid gland produces hormones that control your body's metabolism. Diagnosis of thyroid problems consists of a simple blood test. The level of these hormones in the blood will quickly determine whether or not your thyroid is functioning properly. An overactive thyroid can be treated with antithyroid drugs, radioactive iodine, or a combination of the two. In some cases, surgical removal of part of the thyroid may be necessary. A good ear, nose and throat specialist can determine if you have thyroid problems and correct them.