Diseases of the thyroid gland involve many areas of medicine. The impairment of thyroid gland function affects 4-5% of younger population and more than 10% of the senior population (in ratio of 6-8 women to every man). Thyroid gland defects are mostly of autoimmune origin. The development of various kind of autoimmune disease in specific cases can be anticipatedd or diagnosed in their early stages. This article emphasizes certain connections of autoimmune thyroid gland diseases with diabetology, dermatology, and .. hematology.