_____________ is а fоrm оf hyperthyrоidism in which аutoаntibodies (against self) bind TSH receptors on thyroid cell membranes, mimicking action of TSH, and causing the thyroid gland to secrete excessive thyroid hormone. •The resulting signs and symptoms include rapid weight loss, increased sweating, irritability, heart palpitations, and protruding eyeballs (exophthalmia).