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A 22-year-old male asked:

What is the normal size of lymph nodes under neck? can too much stress cause the lymph nodes get bigger?

2 doctor answers4 doctors weighed in
Dr. Ed Friedlander
Pathology 44 years experience
Under 3 cm: Bigger than 3 cm is cause for interest, but more concerning are rapidly-enlarging nodes that are not tender, or that are fixed to surrounding structures. Neck nodes shrink and grow seemingly for no reason.
Dr. Randy Stevens
General Surgery 24 years experience
1 cm or less: Lymph nodes under the neck are the 1st line of defense against bacterial and viral illness from the mouth. They form a protective barrier from the germs our mouth is exposed to. It has been a busy season with viral illness. If your are swollen then they are busy fighting infection. See your doctor if they are large and you are always tired.
Dr. Ed Friedlander
Pathology 44 years experience
This is a good reminder. Thanks Dr. Stevens.
Mar 4, 2013

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