![]() However, they won’t disappear completely. They return slowly to normal size over the next 2 to 4Â weeks. Viral infections and minor skin infections and irritations can cause lymph nodes to double in size quickly over 2 or 3Â days. Swollen, tender node under the jawbone (mandible) can be caused by tooth decay and dental abscess A disease like chickenpox can cause all the nodes to swell. Most enlarged nodes in the neck are due to colds or throat infections. The front-of-the-neck nodes drain the lower face, nose, and throat, so an injury or infection in these areas might cause the nodes to swell. Swelling of the back-of-the-neck nodes suggests an irritation on the scalp. ![]() If the armpit nodes are swollen, examine the arms and upper chest. If the nodes in the groin are swollen, look for an injury in the legs and lower abdomen. Try to locate and identify the cause of a swollen gland. If they are over 2 inches across or the overlying skin is pink, the nodes are not successfully controlling the infection and may contain pus.Ĭuts, scrapes, scratches, splinters, burns, insect bites, rashes, impetigo, and any break in the skin will cause lymph glands to get larger. Nodes infected with bacteria are usually more than 1Â inch across and very tender.This slight enlargement and mild tenderness means the lymph node is fighting infection and succeeding. Nodes infected by a virus are usually 1/2 to 1Â inch across.Lymph nodes swell when they are fighting an infection. The easiest to feel are in the neck or groin. At this age they can be twice the normal adult size. Normal nodes are largest at age 10 to 12 years. Lymph nodes help prevent the spread of infection and protect the bloodstream from viral and bacterial invasion. The body contains more than 500 lymph nodes. Lymph nodes are small round shaped glands that are about the size of a pea or baked bean.
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