LOW BACK PAIN
Low back pain (sometimes referred to as lumbago) is a common symptom involving the lumbar vertebrae and related soft tissue structures such as muscles, ligaments, nerves and intervertebral discs. It can be either acute, subacute or chronic in its clinical presentation. Most often, the symptoms of low back pain show significant improvement within a few days to a few weeks from onset. In a significant number of individuals, low back pain can be recurrent in nature with a waxing and waning quality to it. In a few people this condition can become chronic. Population studies show that back pain affects most adults at some stage in their life and accounts for more sick leave and disability than any other single medical condition.
(Sources: Medline Plus/ Wikipedia)
