The thyroid gland is responsible for the production of thyroid hormone which regulates growth and development, heart rate, body temperature, and normal function of the body. It releases hormones that control metabolism-the way your body uses energy. Disorders of the thyroid gland may cause an overproduction or underproduction of thyroid hormones.

Depending on how much or how little hormone your thyroid produces, you may often feel restless or tired, you may lose or gain significant amounts of weight, or you may have feelings of anxiety or depression. Other symptoms may include, irregular menstrual periods, sensitivity to cold or hot temperatures, or joint and muscle pain.

For thyroid disorders stemming from the overproduction or underproduction of thyroid hormones, treatment varies and may include monitoring thyroid function, medications, surgery, ultrasound, or radioactive iodine.