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 ...

You have neck or upper back pain along with the shoulder pain ... pain that extends down your arm past the elbow. The pain may be accompanied by numbness, burning, or tingling.

Compression of the spinal nerves leads to pain, tingling, and weakness that radiates down the affected shoulder and arm. This ...