What is Graves’ disease? Graves’ disease is an autoimmune disease in which your immune system attacks healthy tissue in your thyroid gland for unknown reasons. It’s the most common cause of hyperthyroidism, a condition in which your thyroid gland makes too much thyroid hormone.

Disease entity. ICD-10: E05.00; Disease. Thyroid eye disease (TED) is an autoimmune disease caused by the activation of orbital fibroblasts by autoantibodies directed against thyroid receptors. TED is a rare disease, which had an incidence rate of approximately 19 in 100,000 people per year in one study.