Medically reviewed by Theresa Marko, PT, DPT, MS Key Takeaways Armpit pain can appear with symptoms like tenderness, swelling, and redness. Causes include injuries, infections, or swollen lymph nodes; ...

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 ...

I have a sore in my armpit and it keeps on coming back. Sometimes it drains some clear fluid and sometimes there is pus, almost like a pimple. It does not always come back in the same spot, but it is ...

Armpit fat is common for people of all sizes. Tight tops or bras can make underarm folds look more noticeable. Common causes include genetics, weight gain, and hormone changes, but sometimes it can be ...