Low back pain is a common condition. The causes of low back pain are complex and the following should be seen as soon as possible: (1) first presentation of low back pain at age less than 20 or older than 55; (2) low back pain after a clear history of trauma; (3) persistent, progressive low back pain; (4) tumor disease (past or present); (5) patients taking hormones; (6) medical disorders, poor health; (7) weight loss; (9) nerve damage (numbness, muscle weakness, etc.); (10) spinal problems (7) those who have lost weight; (8) those with persistent bending difficulties; (9) those with nerve damage (numbness, muscle weakness, etc.); (10) those with obvious spinal deformities.