Sciatica is inflammation and irritation to the largest nerve in the body. Five pairs of nerves exit the spine in the lower back to form the two sciatic nerves. The soft pulpy disc between each spinal bone is often involved. When a disc bulges, it can put direct pressure on the nerves. Chiropractic adjustments, including flexion distraction technique can be very helpful in improving spinal biomechanics and reducing nerve pressure to the sciatic nerve roots.