7. Vaccines. Lymph nodes in your armpit can also become swollen due to vaccines as part of an immune response. Gardasil—the vaccine for human papillomavirus (HPV), or a set of viruses that can ...

Causes of armpit lumps include cysts, infections, and swollen lymph nodes. Although rare, a lump in the armpit may be a sign of breast cancer.

And although your armpit lump is most likely a treatable skin issue like a cyst, occasionally it can be an indication of cancer—such as breast cancer, which can spread to lymph nodes in the armpit.

Armpit pain is a common complaint that can have many causes, from mild muscle injuries to swollen lymph nodes and severe skin infections. In most cases, armpit pain isn't a reason to worry, but it ...

Also, the lymph nodes in your armpit filter out any abnormalities (infections, reactions to drugs, cancer) in the chest wall, arm or breast on that side of the body.

Armpit pain is a common complaint that can have many causes, from mild muscle injuries to swollen lymph nodes and severe skin infections. In most cases, armpit pain isn't a reason to worry, but it ...

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

They're located throughout the body in the armpits (called axillary lymph nodes), the groin, neck and chest. The nodes can become swollen and painful, usually when the body is fighting off infections.