Graves' Disease.
Q: What is Graves' disease? A: Graves' disease is an autoimmune disease that affects the thyroid. The thyroid is a small gland in the front of the neck. It makes hormones called T3 and T4 that regulate how the body uses energy. Thyroid hormone levels are controlled by the pituitary, which is a pea sized gland in the brain. It makes thyroid stimulating hormone (TSH) which triggers the thyroid to make thyroid hormone.
The New England journal of medicine