The common people often understand the thyroid gland as the neck. When the thyroid gland is hyperthyroidism, the neck will generally be swollen to varying degrees, but there will be no pain and tenderness of the thyroid gland. The most common thyroid disease that causes neck pain is subacute thyroiditis, which is caused by virus infection. The pain often radiates to the back of the ear, the back of the neck, the head, etc., and other rare diseases include bleeding in the thyroid gland, suppurative thyroiditis, etc. The main clinical manifestations of hyperthyroidism include tremor, palpitation, hyperhidrosis, fear of heat, irritability, weight loss due to overeating, increased stool frequency, menstrual disorder, sexual dysfunction, infertility, exophthalmos, goiter, increased heart rate, arrhythmia, etc.
