Sciatica itself is not a diagnosis but rather a symptom experienced by the individual as a result of some compression of the sciatic nerve within the body, usually within the pelvis. True sciatica is pain radiating along the sciatic nerve, which runs down one or both legs. The sciatic nerve is the largest and longest nerve in the body, starting from the lower back and running all the way down the back of the leg to the foot.
Why do you get sciatica?
Sciatica can occur at any age however people between the ages of 30 and 50 are more likely to develop the symptom. Pregnant women are also commonly affected due to the pressure of the weight of the developing baby.
There are many conditions that can cause sciatica and include lumbar disc herniation, lumbar spinal stenosis, sacroiliac joint dysfunction, piriformis syndrome, degenerative joint disease and spondylolisthesis. Some of these occur more commonly than others and in some circumstances you can have more than one condition at a time.