Some of the typical causes for back pain are:
The small nerves on the lower back may get irritated
The large nerve root (sciatica nerve) that go down to the legs may get irritated
The large paired erector spinae muscle may get strained
The joints, bones or ligaments may get damaged
The intervertebral disc may get degenerated
Although it can happen at any age, back pain, especially lower back pain occurs in people who are in their 40s. Back pain is typically characterized by a localized pattern of discomfort in the lower back area that mostly occurs after an event that culminated in stressing the lumber tissues.
The severity of this condition, depends on a number of issues, which comprises of the degree of the strain and also the resulting spasm of the lower back muscles that occurred owing to the trauma.