[Low back pain frequently occurring in the 4th decade].
D000328:Adult; D000367:Age Factors; D001416:Back Pain / Q000209:etiology*; D005260:Female; D006801:Humans; D007403:Intervertebral Disc; D008159:Lumbar Vertebrae; D008297:Male; D008875:Middle Aged; D013122:Spinal Diseases / Q000150:complications*