Swollen (Enlarged) Lymph Nodes Overview
Lymph nodes which are also called lymph glands, becomes swollen as a result of infection from bacteria or viruses. Swollen or enlarged lymph nodes (lymphadenopathy) is usually a sign that the body’s immune system is fighting an infection or disease. Rarely, swollen lymph nodes are caused by cancer.
Lymph nodes are part of the body’s lymphatic system and play a vital role in the body’s ability to fight off Infections. The Lymphatic system is the body’s system of balancing the fluid levels. The lymphatic system consists of a network of tissues, vessels and organs that work together to move a colorless, watery fluid called lymph back into the body’s circulatory system or the bloodstream.
Lymph nodes function as filters, trapping viruses, bacteria and other causes of illnesses before they can infect other parts of the body.
Common areas where swollen lymph nodes may be noticed include the neck, under the chin, in the armpits and in the groin. There’s a network of about 600 lymph nodes in the body mostly located in the abdomen, arms, jaw and the legs.
Signs and Symptoms Swollen (Enlarged) Lymph Nodes
Causes of Swollen (Enlarged) Lymph Nodes
The lymph nodes get larger when more blood cells come to fight off an invading infection and illness. They all essentially pile in, causing pressure and swelling. Usually the lymph nodes swelling occurs close to the infection’s location.
Following are some of the common causes of swollen (enlarged) lymph nodes:
- Ear infection’s
- Infection’s (Respirator and sinus infection’s)
- Infected (abscessed) tooth
- Bacteria
- Viruses
- Cold and Flu
- Mononucleosis
- Measles
- Skin wounds (cellulitis)
- Strep throat
- Human immunodeficiency virus (HIV), the virus that causes AIDS
Other infection’s
- Cat scratch fever (a bacterial infection from a cat scratch or bite)
- Sexually transmitted infection’s (Syphilis)
- Tuberculosis
- Toxoplasmosis (a parasitic infection resulting from contact with the feces of an infected cat or eating undercooked meat)
Immune system disorders
- Lupus (a chronic inflammatory disease that targets your joints, skin, kidneys, blood cells, heart and lungs)
- Rheumatoid Arthritis (a chronic inflammatory disease targeting the synovium which is a tissue that lines the joints.
Cancers
- Lymphomas (cancer that originates in the lymphatic system.
- Leukemia (cancer cancer of your body’s blood-forming tissue, including your bone marrow and lymphatic system).
- Other cancer’s that have spread (metastasized) to lymph nodes.
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