There are four muscles that form a cover for the top of the humerus (bone of the upper arm ... it causes sharp pain in the ...

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 ...

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.