There are many different causes for pain in your lower back, usually related to an injury or to degenerative disc disease. The most common causes of lower back pain include:

• Osteoarthritis. The aging process can cause this condition in which you experience pain, inflammation and instability in your lower spine.
• Spondylolisthesis This is a painful condition caused by one vertebrae slipping over the next one.
• Sacroiliitis. Inflammation of your sacroiliac joints, where your spine and pelvis connect, can trigger low back pain.
• Scoliosis. This and other conditions that cause spinal curvature create discomfort in your lower back.
• Spinal stenosis. A narrowing of the space within your spine can put pressure on nerves throughout your spinal column. This may cause pain or numbness in your legs as well.
• Kidney infection or endometriosis. A kidney stone can happen to anyone, but only women can get endometriosis. Both may cause lower left back pain and both are less common.
• Disc injury or degeneration. The discs that create a cushion between your vertebrae can deteriorate, rupture or bulge, resulting in severe pain.
• Underlying medical conditions. Conditions such as infections or tumors happen, but they’re less common causes of lower back pain.
• Appendicitis or kidney stones. These medical conditions can result in , lower right back pain.
• Injury to muscles or ligaments. A sudden movement or lifting a heavy object can cause an injury in your lower back. You can also injure your muscles, tendons or ligaments if you experience a vehicle accident, sports injury or fall, any of which leads to back pain.