It is necessary to understand that back pain is one of the symptoms of a medical condition. There are various factors which can result into back pain. One of them is the mechanical problem.
This problem is associated with the spinal movements. Intervertebral disc degeneration is one of the most common mechanical causes of back pain. This means that the discs placed in between the vertebrae of the spine are breaking down with age. This problem can result into pain if the back is stretched.
Injuries can also result into back pain. Spine injuries like fractures and sprains can cause chronic back pain.
Many other medical conditions can also lead to back pain. These problems include curvature of the spine, various forms of arthritis, narrowing of the spinal section which puts pressure on the nerves and the spinal cord and osteoporosis which can result into the painful cracking of the vertebrae.
Tumors and infections are other causes of back pain but they are not common.
Even though the causes of back pain are generally physical but emotional stress play a vital role in identifying the strength and length of the pain. Lack of sleep, depression and anxiety are other causes of back pain.