When something grows around the neck or in the neck, it depends on where exactly the thing is growing. In the middle of the neck is the trachea, and on either side of the trachea are the muscles, including the thyroid gland as well. The neck includes lymph node groups such as anterior cervical lymph nodes, posterior cervical lymph nodes, clavicular lymph nodes as well as submandibular lymph nodes and subchin lymph nodes. Therefore, if there is an unidentified large nodule or hard node, we must consider where it is, whether it is the thyroid gland or the lymph nodes, how mobile it is, whether there is any pressure pain, whether there is any adhesion with the surrounding tissues, whether the local skin temperature is high, how hard it is, and how mobile it is, all of which should be examined. Therefore, if you have something on your neck, you need to further identify what it is. Some are lymph nodes, such as sore throat or cold causing swollen lymph nodes, may be lymph nodes themselves or other diseases metastasized to lymph nodes, swollen lymph nodes, also appear hard nodes; if the thyroid gland itself disease, thyroid nodules or thyroid cystic changes, sudden adenoma, intracapsular bleeding, also suddenly appear nodules. This situation must be examined and identified in a professional hospital.