What is Hashimoto’s disease?
An autoimmune disease is when the body mistakenly attacks its own tissues. This occurs when the immune system thinks its own tissue is a foreign invader. In 1912, Japanese physician Dr. Haruko Hashimoto first discovered a particular autoimmune disease in which the body attacks the thyroid gland tissue. The condition was named after him: Hashimoto’s thyroiditis. Hashimoto’s disease is also called autoimmune thyroiditis or lymphocytic thyroiditis.
Hashimoto’s thyroiditis is the most common type of hypothyroidism in the United States. It’s also the most common cause of hypothyroidism in iodine-sufficient areas of the world. Hypothyroidism is a condition of an underactive thyroid.