Back Pain
Back pain is a broad category of musculoskeletal conditions affecting the spine and surrounding structures. It is the single leading cause of disability worldwide, affecting roughly 80% of adults at some point in their lives. Back pain ranges from acute (sudden, short-term) to chronic (lasting more than 12 weeks) and can involve the muscles, ligaments, discs, nerves, or vertebrae. The vast majority of cases are non-specific — meaning no single structural cause can be identified — and most resolve with conservative care. Back pain is both overtreated (unnecessary surgery, opioids, imaging) and undertreated (insufficient physical therapy and active rehabilitation).
Symptoms
Symptoms vary by type and cause: • Acute back pain — Sudden onset muscle ache, stiffness, or sharp pain, typically in the lower back. Often follows a strain, sprain, or sudden movement. • Chronic back pain — Persistent aching or stiffness lasting beyond 12 weeks; may involve psychological components including anxiety and fear-avoidance. • Radicular pain (sciatica) — Pain, tingling, numbness, or weakness radiating from the lower back down through the buttock and leg, following the sciatic nerve path. • Spinal stenosis — Cramping, weakness, or pain in the legs when walking; relieved by leaning forward or sitting. • Herniated disc — Localized back pain with possible nerve pain radiating into a limb; may include numbness or weakness. RED FLAG SYMPTOMS requiring urgent evaluation: • Loss of bladder or bowel control • Numbness in the groin or inner thighs (saddle anesthesia) • Fever with back pain and unexplained weight loss • Pain following significant trauma • Severe, constant pain worse at night unrelieved by rest
Treatments
Conservative (first-line — effective for 90% of cases): • Stay active — movement is medicine; bed rest worsens outcomes • Physical therapy — targeted exercise and movement retraining; consistently outperforms medication for chronic back pain • Pain neuroscience education — understanding the pain system reduces fear-avoidance and disability • Manual therapy — spinal manipulation, massage, dry needling for short-term relief; best combined with active rehab • NSAIDs (ibuprofen, naproxen) — first-line pharmacological option for short-term use • Muscle relaxants — useful for acute spasm; not for long-term use • CBT (Cognitive Behavioral Therapy) — strong evidence for chronic back pain with psychological components Interventional: • Epidural steroid injections — temporary relief for radicular pain; not curative • Nerve blocks — diagnostic and therapeutic Surgical (narrow indications only): • Cauda equina syndrome — surgical emergency • Severe or progressive neurological deficits • Structural problems (e.g., severe stenosis, spondylolisthesis) unresponsive to 6+ weeks conservative care • Note: For most chronic low back pain, surgical outcomes equal non-surgical at 2 years NOT recommended for routine back pain: • Opioids (high risk, poor long-term evidence) • Routine MRI without red flags • Prolonged bed rest
Risk Factors
• Sedentary lifestyle and prolonged sitting • Poor sleep quality • Psychological distress, anxiety, depression • Physically demanding work (heavy lifting, repetitive motion, vibration) • Obesity — each extra pound adds ~4 lbs of spinal joint pressure • Smoking — impairs blood flow to discs, accelerating degeneration • Prior episode of back pain (strongest predictor of recurrence) • Age — disc degeneration increases with age (though it's often asymptomatic) • Fear-avoidance behavior — avoiding movement out of fear perpetuates chronification • Poor posture and muscle deconditioning
Prevalence
Back pain affects approximately 80% of adults at some point in their lifetime and is the #1 cause of disability globally. In the U.S., it accounts for over $100 billion annually in healthcare costs and lost productivity. Low back pain is the most common form. Chronic back pain affects approximately 20% of those with acute episodes. It is the leading reason for missed workdays and one of the most common reasons for physician visits worldwide.
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