There are a lot of diseases and disorders in the endocrine system. A goiter is an abnormal enlargement of the thyroid gland. Symptoms of the thyroid gland is swelling or lump in the neck. Treatments for the goiter is medication or surgery if necessary. Hyperthyroidism is the overproduction of a hormone gland in the neck. Symptoms of hyperthyroidism is unexpected weight loss,rapid or irregular heartbeat, sweating, and irritability. Treatments for hyperthyroidism is radioactive iodine,medications, and sometimes surgery. Hypothyroidism