Several different lumbar spine (low back) disorders can cause sciatica. Sciatica is often described as mild to intense pain in the left or right leg. Sciatica frequently occurs when a nerve root is compressed in your lower (lumbar) spine, often as a result of a herniated disk in your lower back.

Lumbar spine (low back) disorders can cause sciatica pain. Sciatica is often described as mild to intense pain in the left or right leg. Sciatica is caused by compression of one or more of the five sets of nerve roots in the lower back. Other things that may make your sciatica pain worse include being overweight, not exercising regularly, wearing high heels, or sleeping on a mattress that is too soft.

Sciatica is also caused by compression of one or more of the five sets of nerve roots in the lower back. Sometimes doctors call sciatica a radiculopathy. Radiculopathy is a medical term used to describe pain, numbness, tingling, and weakness in the arms or legs caused by a nerve root problem.

Other possible causes of sciatica are;
*Lumbar spinal stenosis.
*Spondylolisthesis.
*Piriformis syndrome.
*Spinal tumors.
*Trauma.
*Sciatic nerve tumor or injury.
*Bulging disc or herniated disc:
*Degenerative disc disease
*Pregnancy
*Spinal infections
*Ischemia