The lymphatic system doesn’t have a pump like the cardiovascular system does. During this time, congestion in the lymph nodes can last for an extended period of time if there is not enough movement in the body. The swelling will dissipate once the lymphatic system has removed the broken down pathogen that caused the infection.
Once the pathogen has been neutralized, it needs to be broken down and eliminated. Swollen nodes that exhibit pain are usually an indication of an ongoing infection in the node. After a few days, the pain may subside but the swelling will remain. The surplus of lymphocytes are stored in the lymph nodes which causes them to swell. When infection occurs, specialized cells alert the body to produce more lymphocytes (white blood cells) in order to fight off the infection. Sinus infection, the flu, and strep throat, are some common causes of swollen lymph nodes under the jaw. Bacterial infections, parasitic infections, and injury to the area can also cause lymph nodes to swell. Swollen lymph nodes are most often an indication of infection.
The serve to drain the cheeks, side of the nose, upper lip, lower lip, gums, and the corners of the eyes (also known as the madera palpebral commissure). The nodes located under the jaw are classified as cervical lymph nodes (lymph nodes in the neck) and are specifically known as submandibular lymph nodes. Lymph nodes house lymphocytes (white blood cells) and help with the filtration of lymph. Lymph nodes are small, pea sized, sacks located throughout the body.
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