Low Back Pain
Low back pain (or lower back pain) affects about 80 percent of adults at some point, leading to missed work and sometimes disability. Pain can be dull and constant or sharp and sudden. It can initiate with an accident or hefting a weight or develop over time. Most low back pain lasts for a few days or weeks, defined as acute. Subacute pain lasts 4 to 12 weeks. Chronic pain lasts for 12 weeks or longer.