... 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. ... responsible for ~25% of cervical radiculopathies. Extension and lateral rotation of the neck narrows the ipsilateral intervertebral foramen and may reproduce radicular symptoms (Spurling's...