A member asked:

What are the causes of extremely painful groin lymph nodes?

A doctor has provided 1 answer
Dr. Michael Miller answered

Specializes in Wound care

Monitoring Centers: The lymphatic system absorbs and carries things too big to go into the arteries and veins like bacteria eaten by white cells and digested food. A lymph node "tastes" the lymph to see if anything bad is there like bacteria, viruses, cancers, etc. When it detects a problem, it alerts the immune system and enlarges in response to the inflammation they create when they react. They may be painful.

Answered 5/12/2013

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Related Questions

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Why is my lymph nodes swollen and painful in my groin right side?

3 doctors weighed in across 2 answers