Having a thyroid problem can mean many things. Being part of the endocrine system, the most common thyroid problems are listed below. This may mean that your thyroid gland is underactive, overactive, may have grown too large, have lumps called nodules, or may be part of an overall endocrine disorder. In all cases there are treatment options. Consult with your doctor or endocrine specialist. Depending on your type of problem, possible treatments include: medications, thyroid hormone pills, radioactive iodine, surgery, and other procedures.