Hyperthyroidism does not necessarily lead to a large neck. Hyperthyroidism is a group of metabolic diseases caused by excessive production of thyroid hormone in the body. For patients with mild hyperthyroidism or diffuse toxic hyperthyroidism, there may be dependence and mutual restriction between thyroid hormone and thyroid stimulating hormone. When the balance between the two is slightly disturbed, some patients will not have obvious neck thickening, so hyperthyroidism does not necessarily have a large neck. However, for thyroid hormone and thyroid stimulating hormone interacting with each other, extreme weakness and other influences, there is a greater chance that patients will be accompanied by different goiters. Hyperthyroidism can be treated with formamide imidazole, propylthiophene and iodine agents. Eat more foods with high protein and vitamins, and less chili, coffee and strong tea.