... a lower cervical disk is a common cause of neck, shoulder, arm, or hand pain or tingling. Neck pain, stiffness, and a range of motion limited by pain are the usual manifestations. A herniated ... and myelopathy may also be present. Spinal cord involvement is suggested by Lhermitt's symptom, an electrical sensation elicited by neck flexion and radiating down the spine from the neck. ... neck. When little or no neck pain accompanies cord compression, the diagnosis may be confused with amyotrophic lateral sclerosis (Chap. 369), multiple sclerosis (Chap. 3 75), spinal cord tumors,...