Is pain due to pressure on nerves?  Spinal tumors and the intervertebral disk.
D004194:Disease; D007403:Intervertebral Disc; D007405:Intervertebral Disc Displacement / Q000502:physiology*; D009369:Neoplasms; D010146:Pain / Q000209:etiology*; D013120:Spinal Cord Neoplasms; D013122:Spinal Diseases; D013125:Spinal Neoplasms; D013127:Spinal Nerves; D013131:Spine
INTERVERTEBRAL DISK DISPLACEMENT/physiology; NERVES, SPINAL/diseases; PAIN/etiology and pathogenesis; SPINE/neoplasms