What is the most common cause of hyperthyroidism?

Question

Quizplus · Accepted Answer

Graves' disease is the most common cause of hyperthyroidism, accounting for around 85% of cases. It is an autoimmune disorder characterized by the production of antibodies that stimulate the thyroid gland to produce excess thyroid hormone. Multinodular goiter and radiation exposure can also cause hyperthyroidism, but they are less common causes. Excess thyrotropin-releasing hormone (TRH) from the hypothalamus would lead to excess production of thyroid-stimulating hormone (TSH) from the pituitary gland, which would stimulate the thyroid gland to produce more thyroid hormone, but this is not a common cause of hyperthyroidism.

What Is the Most Common Cause of Hyperthyroidism