Lower back pain, often referred to as lumbago, is a common condition characterized by discomfort or pain in the lower back region. It can result from various causes, including muscle or ligament strain, herniated discs, degenerative disc disease, arthritis, or poor posture. Symptoms may range from a dull ache to sharp pain and can be localized or radiate down the legs. Factors such as age, physical activity level, and lifestyle choices can contribute to the development of lower back pain. Physical therapy can help to alleviate pain and improve function.