human
I'd like to find out the most common causes of back pain.
assistant
The most common causes of back pain include strain and sprain, degenerative disc disease, spinal stenosis, facet joint arthropathy, osteoporosis, herniated discs, muscle spasms, and infection. Other less common causes may include tumors or other structural abnormalities, inflammatory diseases such as ankylosing spondylitis, and certain medical conditions that affect the spine, such as scoliosis.