Why do doctors check for swollen lymph nodes

To find out if your immune system is working properly.

Explanation:

Swollen lymph nodes, also known as tongues, lumps or lymph nodes, are small 'bean' shaped glands that are distributed throughout the body and that help the immune system to function properly as they filter the lymph to remove viruses and bacteria that can be a risk to the body. Once removed, these microorganisms are destroyed by lymphocytes, which are defense cells present within the lymph nodes.

When doctors examine swollen lymph nodes, they are looking for malfunctions in your immune system.

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-lavira: )