Pain in the Legs
Sciatica refers to the feeling of symptoms traveling down the lower extremities which results from pressure on a nerve, usually as the nerve courses through the lumbar spine or as it leaves the lumbar spine. It is more of a symptom than a diagnosis. We consider it a symptom because it is what the patient might feel subjectively traveling down the leg.
There may be several different causes of sciatica, such as a Herniated Disc, Spinal Stenosis, Osteophytes or Spondylolisthesis. While these conditions are diagnoses which may cause sciatica, sciatica is a symptom of these diagnoses or disease pathologies.