Spinal stenosis is a narrowing of the spinal canal in the cervical and lumbar regions of the spine, which can lead to compression of the spinal cord and nerves. In turn, this can lead to loss of deep tendon reflexes (DTR), muscle weakness in the legs, and numbness and pain in the back, buttocks, and legs. Spinal stenosis often occurs as the result of another back problem, such as degenerative disc disease, nerve root compression from osteoarthritis, herniated discs, or scoliosis. Spinal stenosis can be caused by natural aging (the vertebral discs become drier and smaller as fluid dries up) or by a spinal injury causing nerve compression. Many patients who suffer from stenosis are unable to work because of pain in their back and legs and their inability to walk effectively or stand for prolonged periods of time. Fortunately, lumbar spinal stenosis is one of the few back conditions recognized by the Social Security Administration (SSA) as an official impairment listing, meaning that those with documented cases of severe lumbar spinal stenosis are automatically granted disability benefits.