Pain in your left arm can have many different causes, from injuries and muscle strain to a pinched nerve or sprain. In some ...

"My shoulder pain wakes me up if I roll over on that side during the night." Those are two of the most common statements made by tennis players complaining of shoulder and upper arm pain.

It's normal and common for your arm to be sore after getting a flu shot. Your symptoms may include pain, swelling, or redness where the shot was given. This happens because of the injection itself ...