Herniated and Bulging Discs
A herniated or bulging disc in the lower back is the most common cause of sciatica. When the soft center of a spinal disc pushes outward, it can press directly on the nerve roots that form the sciatic nerve. This pressure and the inflammation that comes with it can send pain, numbness, and tingling down the leg. Disc problems often develop from lifting, twisting, sitting for long periods, or gradual wear over time.
