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 ...

Pain in your breast and armpit can happen due to hormonal changes (like before your period, during pregnancy, or menopause), an ill-fitting bra, muscle strain, or mastitis, which is inflammation of ...

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 ...