There are many causes of armpit pain, from a mild muscle strain to more serious conditions like breast cancer. Learn more about causes of armpit pain in this article.

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. Hot List: Midi Dresses, ...

Causes of pain under the left armpit can range from minor skin infections to nerve damage. Learn about these and other causes, and when to see a doctor.

Right-side pain under the armpit may be due to muscle strain, infections, or skin conditions. Sometimes, it may indicate a more serious issue. Read more here.

Your armpit is a sensitive area, so it's not uncommon to experience discomfort there. If you have pain under your left armpit, you may be wondering what might be causing it and what should you do ...