What is Graves disease? Graves’ disease is an autoimmune disorder that results in an overactive thyroid gland. It’s the most common cause of hyperthyroidism, which is a condition that causes the thyroid gland to produce too much thyroid hormone. The symptoms of Graves’ disease include weight loss, anxiety, irritability, hand tremors, heat intolerance, and sweating. If you have been diagnosed with Graves disease, you may want to get rid of it quickly. There are many...