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.
Syringomyelia. Syringomyelia can cause right arm pain. According to the MayoClinic.com, syringomyelia involves the formation of a fluid-filled cyst or syrinx in the spinal cord. Over time, the syrinx may expand, causing damage to the spinal cord, along with pain, weakness and other symptoms in the upper extremity.