A dull feeling in your left arm could be from overuse or strain. Learn what causes pain on this part of the arm here and ...

Armpit pain can be caused by many issues, from muscle strains to swollen lymph nodes. Here are possible causes of underarm ...

“If a (swollen lymph node) has been present for a ... you can feel more pain in the chest area or under the arm," says O'Hare. Pain often occurs in both armpits and may radiate from the breasts.

“If a (swollen lymph node) has been present for a ... you can feel more pain in the chest area or under the arm," says O'Hare. Pain often occurs in both armpits and may radiate from the breasts.