If this happens in the cervical spine (the vertebrae in your neck) this can lead to peripheral neuropathy in the left or ...

Brachial plexus injury, affecting nerves controlling the arm, can cause severe pain, numbness, weakness, or paralysis. Early ...

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 ...

Arm pain can have many causes, but left arm pain particularly can sometimes be a sign of a serious problem with your heart — especially if it's accompanied by chest pain or tightness.