Lower back pain is one of the most common reasons for medical consultations worldwide. The Global Burden of Disease study identifies low back pain as the single leading cause of disability globally. Most cases resolve with conservative treatment, but understanding when to seek professional help is important.
Common Causes of Lower Back Pain
Mechanical (Musculoskeletal) Causes
The majority of lower back pain is mechanical in nature:
- Muscle or ligament strain: The most common cause, often from lifting heavy objects, sudden movements, or poor posture
- Disc problems: Herniated (slipped) discs can press on nerves, causing pain that may radiate down the leg (sciatica)
- Degenerative disc disease: Age-related wear and tear on spinal discs
- Facet joint dysfunction: Inflammation of the small joints between vertebrae
- Spinal stenosis: Narrowing of the spinal canal, more common in older adults
Lifestyle Factors
- Prolonged sitting: Office workers and drivers are at higher risk
- Poor posture: Slouching increases spinal stress
- Obesity: Extra weight puts additional strain on the spine
- Physical inactivity: Weak core muscles provide less spinal support
- Smoking: Reduces blood flow to spinal tissues and accelerates disc degeneration
Evidence-Based Treatment
Acute Lower Back Pain (Less Than 6 Weeks)
NICE guideline NG59 (Low back pain and sciatica) recommends:
- 1Stay active: Rest is no longer recommended. Gentle movement and normal activities help recovery
- 2Over-the-counter pain relief: Non-steroidal anti-inflammatory drugs (NSAIDs) such as ibuprofen for short-term use. Note: NICE guideline NG59 advises against offering paracetamol alone for low back pain
- 3Heat therapy: A warm pack on the affected area can help relax muscles
- 4Avoid bed rest: Extended bed rest can worsen back pain and delay recovery
Chronic Lower Back Pain (More Than 12 Weeks)
NICE recommends a stepped approach:
- 1Exercise programmes: Group exercise, yoga, tai chi, or individual physiotherapy
- 2Manual therapy: Spinal manipulation or mobilisation as part of a treatment package
- 3Psychological therapies: Cognitive behavioural therapy (CBT) for chronic pain management
- 4Combined physical and psychological programmes when individual therapies have not worked
The American College of Physicians (ACP) 2017 clinical practice guideline similarly recommends non-pharmacological therapies as first-line treatment for chronic low back pain, including exercise, multidisciplinary rehabilitation, acupuncture, and mindfulness-based stress reduction.
What About Imaging?
NICE and the American College of Radiology both advise against routine imaging (X-rays or MRI) for nonspecific lower back pain. Imaging is only recommended when:
- Red flags are present (see below)
- Pain persists beyond 6 weeks despite treatment
- Surgery is being considered
Many people have disc abnormalities on MRI without any symptoms. A landmark study by Brinjikji et al. (2015) found that 52% of asymptomatic 30-year-olds had disc degeneration on MRI. Imaging findings do not always correlate with pain.
Red Flags: When to See a Doctor Urgently
Seek medical attention immediately if your back pain is accompanied by:
- Loss of bladder or bowel control (cauda equina syndrome - a medical emergency)
- Numbness in the groin or buttocks
- Progressive weakness in one or both legs
- Severe, constant pain that does not improve with rest
- Pain following a significant injury (fall, car accident)
- Unexplained weight loss with back pain
- History of cancer with new back pain
- Fever with back pain (may indicate infection)
- Pain that wakes you from sleep
Prevention
- Exercise regularly: Focus on core strengthening (planks, bridges, bird-dogs)
- Maintain a healthy weight
- Practice good posture: Especially when sitting for long periods
- Lift correctly: Bend at the knees, not the waist; hold objects close to your body
- Take breaks: Stand and move every 30–60 minutes during desk work
- Stretch: Regular stretching of the hamstrings, hip flexors, and back muscles
This article is for informational purposes only and does not replace professional medical advice. Always consult your doctor for personalised guidance.