Cysts (fluid-filled tissue pockets), infections, and swollen lymph nodes commonly cause armpit lumps. You may see a ...

This punchy pop is a knockout. In a new Instagram video, Dr. Pimple Popper aka dermatologist and TLC host Dr. Sandra Lee, MD removes a chunky cyst from a patients underarm. And the famed dermatologist ...

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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 ...