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What are the common causes of swollen lymph nodes?

5 doctors weighed in
Dr. Devon Webster
Internal Medicine - Oncology
4 doctors agree

In brief: Infection or cancer

Lymph nodes are like little filters for your blood.
Viruses and bacteria that get in your bloodstream end up in the lymph nodes, where immune cells build up like an army. This causes swelling and pain in the lymph nodes. Cancer can also cause lymph nodes to swell, but this is usually painless. Lymphoma is a type of cancer within the lymph noes which causes them to become enlarged.

In brief: Infection or cancer

Lymph nodes are like little filters for your blood.
Viruses and bacteria that get in your bloodstream end up in the lymph nodes, where immune cells build up like an army. This causes swelling and pain in the lymph nodes. Cancer can also cause lymph nodes to swell, but this is usually painless. Lymphoma is a type of cancer within the lymph noes which causes them to become enlarged.
Dr. Devon Webster
Dr. Devon Webster
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