Thyroid hormone is a hormone that maintains normal excitability of muscle tissue, circulatory system, nervous system, digestive system. It is one of the important hormones for metabolism in the body. Thyroid hormone is mainly synthesized and secreted in the largest endocrine gland of the human body. When thyroid hormone is secreted too much, hyperthyroidism, which is generally referred to as graves disease, occurs. The patient has hypermetabolic syndrome, which can include agitation, irritability, palpitations, fear of heat, sweating, overeating, weight loss, and female patients' menstruation. Since the thyroid gland is located in the superficial tissue in front of the body neck, it can be found that the thyroid gland is swollen to varying degrees during physical examination, so the patient's neck will be swollen when hyperthyroidism occurs.
