Over 80% of the population will suffer from lower back pain during their lives. Most cases of lower back pain can be linked to a general cause—such as muscle strain, injury, or overuse—or can be attributed to a specific condition of the spine, most commonly:

A number of less common conditions can cause low back pain as well, such as sacroiliac joint dysfunction, spinal tumors, fibromyalgia, and piriformis syndrome.

Lower right back pain can be due to an injury to muscle tendons or ligaments, problems with spinal structures, or issues and diseases related to internal organs
If an abdominal aortic aneurysm ruptures, or begins to leak blood, it can cause severe, unremitting abdominal and lower back pain and requires emergency surgery to stop the blood loss.

While there is no single cause, there are several health conditions and lifestyle habits that are known to increase the risk of developing an abdominal aortic aneurysm.

Nonsurgical treatments can be used to slow the development of an abdominal aortic aneurysm, but if the aneurysm ruptures, emergency surgery is required.

Since most episodes of lower back pain are self-limited, it is often advisable for patients to employ back care on their own early in the course of low back pain.