Children's armpit pimples

Children are in the developmental stage, their physical resistance and immunity are not as good as those of adults, and they are easily affected by the external environment. Some parents have found that their babies have hard lumps under their armpits. This may be an inflammation caused by infection. In severe cases, lymph nodes will swell. Generally, the inflammation will disappear on its own when it subsides. You can take anti-inflammatory drugs, maintain an optimistic mood, get enough sleep, and it will gradually get better.

What are swollen lymph nodes?

Lymph nodes are distributed throughout the body and are important immune organs of the human body. They can be divided into superficial lymph nodes and deep lymph nodes according to their location. Normal lymph nodes are mostly between 0.2 and 0.5 cm in size and are often distributed in groups. Each group of lymph nodes collects lymph from the corresponding drainage area. For example, the lymph nodes behind the ear and in the mastoid area collect lymph from the scalp; the submandibular lymph node group collects lymph from the floor of the mouth, buccal mucosa, gums, etc.; the cervical lymph nodes collect lymph from the nose, pharynx, larynx, trachea, thyroid, etc.; the supraclavicular lymph node group collects lymph from the esophagus, stomach and other organs on the left, and collects lymph from the trachea, pleura, lungs, etc. on the right; the axillary lymph node group collects lymph from the upper trunk, breast, chest wall, etc.; the inguinal lymph node group collects lymph from the lower limbs and perineum. Understanding the relationship between the two is of great clinical significance for determining the location and nature of the primary lesion.

There are many causes of swollen lymph nodes.

1. Infection

Acute and chronic inflammation caused by pathogenic microorganisms, such as bacteria, viruses, rickettsia, etc., such as acute cellulitis, purulent tonsillitis, gingivitis, infectious mononucleosis, scrub typhus, tuberculosis, etc.

2. Tumor

(1) Lymphoma;

(2) Various types of acute and chronic leukemia;

(3) Plasma cell tumors: multiple myeloma, primary macroglobulinemia;

(4) Tumor metastasis: lung cancer, gastric cancer, liver cancer, breast cancer, nasopharyngeal cancer, etc.

3. Reactive hyperplasia

(1) Necrotizing hyperplastic lymphadenopathy;

(2) Serum sickness and serum sickness-like reactions;

(3) Allergic subsepsis;

(4) Systemic lupus erythematosus, rheumatism, etc.

4. Abnormal cell proliferation and metabolism

(1) Langerhans' histiocytosis (histiocytosis X);