Graves' disease is the most common cause of hyperthyroidism, a condition in which the thyroid gland produces too much thyroid hormone. This causes a person's metabolism to speed up, resulting in various health consequences.

Graves' disease is an autoimmune disorder, meaning the body's immune system mistakenly attacks the thyroid gland.

Some people with Graves' disease experience a swelling of tissues behind the eyes that causes the eyes to bulge. This is known as Graves' ophthalmopathy. Some patients develop a reddening and swelling of the skin that affects the shins and the top of the feet. This is known as Graves' dermopathy.

Patients with Graves' disease may experience many of the symptoms of hyperthyroidism, including anxiety and irritability. They may have trouble sleeping and may experience fatigue and unexplained weight loss, despite eating normally.

In diagnosing Graves' disease, a physician will review the patient's medical history and perform a physical examination. Thyroid blood testing and imaging tests may also be used. Treatment may include medications or surgery.