Pain that starts in the buttock and travels down the back of the leg is one of the most common reasons people seek treatment for lower body pain. The moment this type of discomfort appears, many people immediately assume they have sciatica caused by a slipped disc or another problem in the lower back. While that can certainly be true, it isn't the only possibility. In fact, not every case of sciatic nerve pain originates in the lumbar spine. For many people, the source of irr