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 can ...

Lymphedema is swelling caused by a build-up of lymph fluid. It can be a side effect of cancer treatment. This build-up can cause discomfort. It often happens in the arms or legs, but can also occur in ...

Right-sided pain under the armpit may be due to muscle strain, infections, or skin conditions. Sometimes, armpit pain may indicate a more serious issue, such as cancer or a heart issue. The armpit ...

The armpit is a complex junction where muscles, nerves, blood vessels, and lymph nodes meet. Because it is such a busy area of the body, experiencing pain there is surprisingly common. For some, it is ...

Armpit pain can come from injuries, infections, or swollen lymph nodes. To diagnose armpit pain, doctors may use lab tests, physical exams, and imaging studies. Symptoms of armpit pain include ...

Sharon Lanza was too self-conscious to wear sleeveless shirts before last summer. The 73-year-old from upstate New York suffers from lymphedema, a side effect from breast cancer that caused her left ...

Learn about the role of lymph nodes in your body, why they swell, the likely causes, and how it might relate to conditions ...