Drop attacks from cervical cord compression.
D002574:Cervical Vertebrae; D003250:Constriction; D006801:Humans; D007405:Intervertebral Disc Displacement / Q000150:complications* / Q000209:etiology; D008297:Male; D008875:Middle Aged; D010243:Paralysis / Q000209:etiology*; D013117:Spinal Cord Compression / Q000150:complications* / Q000209:etiology; D014711:Vertebral Artery