beside oneself. In a state of extreme agitation or excitement, as in She was beside herself when she found she'd lost her ring, or Peter was beside himself with joyâhe'd won the poetry award.
Symptoms & Signs. Pain in the arm can result from a number of factors. Abnormalities or injury of the skin, nerves, bones, joints, blood vessels, and soft tissues of the arm can all result in pain. Arm pain, depending on the location and cause, may be accompanied by numbness, redness, swelling, tenderness, or stiffness of the joints.
Quick Answer. According to WebMD, pain in the left arm or shoulder can indicate an injury, muscle strain, a degenerative disease, an instability in the joint, tendonitis, pinched nerves or a tumor. These causes occur equally on the left and right sides; left side pain does not indicate anything different from right side pain.