33+ Preauricular Lymph Nodes Swelling Causes Gif. Some medical problems, such as infections, can cause them to swell. Your preauricular lymph nodes are the ones located just in front of your ears.

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Swollen lymph nodes mean your immune system is fighting infection or illness. Classically lymph node swelling is due to some type of inflammation or localized infection. Learn when to see your doctor to rule out something rare, but more serious.

Which lymph nodes are swollen depends on the cause and the body parts involved.

They function as filters, trapping viruses, bacteria and other causes of illnesses before they can infect other parts of your body. Rarely, swollen lymph nodes are caused by cancer. Because occipital lymph nodes can swell if you have a serious disease like cancer, you will also find out when you should see a doctor. They function as filters, trapping viruses, bacteria and other causes of illnesses before they can infect other parts of your body.