Pain in your left arm could be related to a heart condition. Pain in the left arm that is brought on by movement or pushing on the painful area is typically less likely to be heart related.
Causes Of Dull Pain In Left Arm That Comes And Goes
Arm pain also can be caused by a pinched nerve in the neck and moving the neck around may bring on the pain.
Left arm aches. A heart attack can cause pain. Angina which is caused by decreased blood flow to the heart can cause pain in the arm shoulder.