Nancy. Brother Hyperthyroidism is a foreign guy on the domestic Huya platform. Because of his fierce appearance, fans call him Brother Hyperthyroidism. He said his name is Nancy during the live broadcast. Hyperthyroidism, also called hyperthyroidism, refers to thyrotoxicosis caused by the thyroid gland itself secreting too much thyroid hormone. The disease often manifests as hypermetabolic syndrome such as insomnia, sweating, fatigue, palpitations, polyphagia, weight loss, Diarrhea, etc., may include exophthalmos, thyroid enlargement, rare periodic paralysis, myxedema and other symptoms.