When you find that the neck is thickened or has a mass, if the enlargement is symmetrical, it is usually caused by diffuse thyroid lesions, and if the neck protrusion or enlargement is asymmetrical, it is usually a thyroid nodule. When the neck thickens, even if there are no uncomfortable symptoms, think about whether goiter or other thyroid diseases have occurred. You should go to the hospital in time at this time. The general doctor can tell you whether the thyroid gland is enlarged by palpation. There are many kinds of thyroid diseases, such as goiter or goiter. Generally, further examination is needed to determine the nature of thyroid diseases, such as blood test to check thyroid function, radionuclide and ultrasound examination of thyroid when necessary, and even thyroid puncture cytology examination. When you have symptoms such as fear of heat, sweating, palpitation, impatience, overeating and emaciation, you should think of the possibility of hyperthyroidism. Pay attention to the possibility of hypothyroidism when you find symptoms such as cold, edema, weight gain, dry skin and loss of appetite. When you feel neck pain and fever, especially when you feel a lump or tenderness in the thyroid gland, you should consider the possibility of acute or subacute thyroiditis. In these cases, we should go to the endocrinology department of the hospital for further examination in time, so as to get timely diagnosis and reasonable treatment.