Non-Specific Low Back Pain

Etiology — what causes it

Non-specific low back pain (NSLBP) accounts for roughly 85–90% of all low back pain presentations (Maher et al., Lancet 2017). The pain is real but cannot be attributed to a specific identifiable pathology like fracture, infection, malignancy, or nerve compression. Contributors are typically multifactorial — muscular and joint mechanics, deconditioning, prolonged static postures, sudden unaccustomed loading, sleep disruption, stress, and changes in central nervous system pain processing all play a role.

Epidemiology — who gets it

Roughly 80% of adults experience a meaningful episode of low back pain in their lifetime (Hoy et al., Best Pract Res Clin Rheumatol). It is the single leading cause of years lived with disability globally (Global Burden of Disease Study). Peak incidence is between ages 30–60, with another rise in older adults. Recurrence is common — about 33% within one year (da Silva et al., 2019).

Clinical signs

Localized lumbar or lumbosacral tenderness, restricted active range of motion in one or more planes, pain reproduction with segmental motion testing, and absence of neurological deficit. No red-flag findings (no progressive weakness, no saddle anesthesia, no bowel/bladder change, no constitutional symptoms).

Symptoms

Aching, dull, or sharp pain in the low back, often worse with certain positions or movements. Pain may radiate into the buttock but typically not below the knee. Morning stiffness, pain after prolonged sitting or standing, and difficulty transitioning between positions are common. Symptoms typically fluctuate.

Best evidence for chiropractic treatment

The Cochrane Back and Neck Group, NICE NG59 (2016, updated), JOSPT CPGs (Delitto et al., 2012; George et al., 2021), and ACP guidelines (Qaseem et al., Annals of Internal Medicine 2017) all converge on the same core message. Exercise therapy is the most consistently supported intervention for both acute and chronic NSLBP (Hayden et al., Cochrane 2021). Spinal manipulation produces small-to-moderate short-term improvements when added to exercise and education (Rubinstein et al., BMJ 2019). Education that reduces fear and encourages activity is a guideline-grade recommendation. Passive modalities alone, prolonged bed rest, and routine imaging for non-specific presentations are explicitly not recommended.

Subtypes

• Acute (less than 6 weeks). Most resolve substantially with active care, reassurance, and graded return to normal activity. Imaging is not indicated in the absence of red flags.
• Subacute (6–12 weeks). Higher risk for progression to chronic pain. Screening tools like the STarT Back tool guide intensity of intervention.
• Chronic (longer than 12 weeks). Best managed with structured progressive exercise, pain neuroscience education, and graded return to feared activities. Multimodal care produces the best outcomes.