Sciatic nerve pain can be so excruciating and debilitating that you don’t even want to get off the couch. Common causes of sciatica can include a ruptured disk, a narrowing of the spine canal (called spinal stenosis), and injury.sciatica pain can occur for a variety of reasons. “Identifying what doesn't move is the first step toward solving the problem.” Often, the most problematic body parts are the lower back and hips. Here's a workout to relieve this pain!