In the daily clinic, there are always a large number of parents who come to the clinic because they happen to find “small lumps” in their children’s neck, and some of them are even very nervous, worrying that their children have some kind of tumor. So how to determine whether they are lymph nodes, and whether they are normal or pathological, here is a brief introduction. Lymph nodes in the neck are generally divided into four groups, located under the chin, under the jaw, in front of the neck, and on the outside of the neck, in addition, there are also lymph nodes in the upper jaw, behind the ear, in front of the ear, in the parotid gland and behind the occiput. After birth, the structure and function of these lymph nodes are gradually improved, and after 1 year of age, if examined carefully, most children can feel lymph nodes. At older ages, lymph nodes may become less palpable. The growth of lymph nodes may be caused by local or systemic diseases, such as throat infections, tuberculosis, hematologic diseases, etc. In this case, the growth of lymph nodes becomes an important sign of the disease and is important for diagnosis, and the doctor may even request a lymph node biopsy to help with the diagnosis. If you find swollen lymph nodes with obvious pressure pain, adhesions, hardness, fluctuating sensation, fusion or rupture of several lymph nodes, and rapid growth within a short period of time, you should seek prompt medical attention.