Pain in your left arm can have many different causes, from injuries and muscle strain to a pinched ... for the top of the ...
However, some causes of left shoulder pain may be related to organs ... The rotator cuff is a group of muscles and tendons that keep your upper arm bone (humerus) in the shoulder socket.
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.