Armpit pain can be caused by many issues, from muscle strains to swollen lymph nodes. Here are possible causes of underarm ...

The lymph nodes are small glands that are part of your immune system. They contain white blood cells and are responsible for filtering out harmful substances in the lymph fluid. Swollen lymph ...

When a person has an infection, they may notice swollen lymph nodes in part of the body near the infection site, such as their neck, armpit, jaw, or groin. Cancer that develops in or spreads to ...

Rarely, painful axillary lymph nodes can be caused by cancer. These include lymphoma (cancer of the lymphatic system), breast cancer and lung cancer, says O'Hare. “If a (swollen lymph node ...