Some other lung-related conditions known to cause chest discomfort include: Pneumonia: This infection inflames the air sacs in your lungs and can make your chest hurt when you breathe or cough.

Shoulder pain ... the upper arm still (it can help to imagine you are resting your arm on a table) rotate your arm, so ...

I am trying to get into shape for summer, and one area that has always been challenging has been my upper arms. Recently, ...