Sciatic nerve is the longest nerve in the human body, which originates from the lower pelvic region and runs through the buttock and down the lower limb. Many a time, it has been found that the discs that protect the spinal cord may protrude from its original position and exert pressure on the sciatic nerve. Due to this pressure, the person experiences some pain on the lower back or the thighs, and this condition is commonly called sciatica. It is actually a symptom that is caused due to a disorder in the lumbar spine. Usually, damage to the sciatic nerve is caused due to a sudden injury to the spinal cord. Moreover, it may also be caused due to the continuous wear and tear of the lower spine.