... 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. ... adjacent nerve roots is common, (2) symptoms and signs may be evident in only part of the injured nerve root territory, and (3) the location of pain is the most variable of the clinical features....