It is a medical condition that occurs due to excessive production of thyroid hormone by the thyroid gland. This tiny gland is found in neck. An overactive thyroid gland makes too much thyroid hormone. This makes your metabolism work at a faster rate.
Types of Hyperthyroidism
- Graves' disease. This is an autoimmune disorder. It is the most common cause of hyperthyroidism. It happens when an antibody overstimulates the thyroid. This condition is most often found in young to middle-aged women. It also tends to run in families.
- Toxic nodular goiter. This condition happens when 1 or more nodules of the thyroid gland become too active.
- Thyroiditis. It occurs when the thyroid becomes irritated. It temporarily causes the thyroid to be overactive. The thyroid then often becomes underactive.