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.

a condition affecting your upper arm may be felt around your shoulder. Problems with the rotator cuff are a common cause of this type of pain. Many of these issues are also the cause of left ...

In this six-part series, we'll give you quick exercises for different body parts every week to help you stay limber.

It may also feel like a burning sensation or discomfort ... It may radiate to the arms (especially the left arm), jaw, neck, back, or abdomen. The pain may not necessarily be localized to the ...