Back Pain
Back pain is the leading cause of UK disability, affecting 80% of adults at some point. UK guide to causes, types, red flags and evidence-base.
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Back Pain UK: Causes, Types & When to See a Doctor
A clinically reviewed UK conditions guide to back pain — types, common causes, red flags that need urgent assessment, how most back pain recovers, and treatment options.
Back pain is the leading cause of disability in the UK and one of the most common reasons for GP consultations and work absence. Over 80% of adults will experience significant back pain at some point. The good news: the vast majority of acute back pain resolves within 4–8 weeks with appropriate self-management. Imaging is rarely needed and staying active is consistently associated with faster recovery.
What Is Back Pain?
Back pain is pain felt in the spine, muscles, or associated structures of the back. It can range from a brief ache after unusual activity to severe, debilitating pain that restricts all movement. For most people, it is acute, self-limiting, and non-specific — meaning no specific structural cause can be identified on examination or imaging. This is not a dismissal: non-specific back pain is real, can be extremely painful, and responds well to evidence-based treatment.
A minority of back pain has an identifiable cause — a prolapsed disc pressing on a nerve root, spinal stenosis, vertebral fracture, or rarely a systemic condition. Identifying this minority is important; for the majority, the clinical priority is providing effective pain relief and supporting early return to normal activity.
The Back: Anatomy Overview
The spine is divided into four regions, each associated with different pain presentations:
- Cervical spine (C1–C7) — neck and upper back; neck pain, tension headaches, referred arm pain
- Thoracic spine (T1–T12) — mid-back; less commonly painful than lumbar; thoracic pain with no mechanism warrants more investigation (red flag)
- Lumbar spine (L1–L5) — lower back; the most common site of back pain; attached to the pelvis via the sacrum
- Sacrum and coccyx — sacroiliac joint pain; coccydynia (tailbone pain)
Types of Back Pain
| Type | Characteristics | Usual cause |
|---|---|---|
| Non-specific mechanical back pain | Lower back pain, worsened by movement, relieved by rest; no neurological deficit; most common type (>95%) | Muscle and ligament strain, facet joint irritation; no identifiable structural lesion |
| Radicular pain (sciatica) | Shooting pain radiating down the leg below the knee; often with numbness or tingling; dermatomal distribution | Prolapsed disc compressing a lumbar nerve root |
| Neurogenic claudication | Bilateral leg pain and heaviness worsened by walking and standing; relieved by sitting or bending forward | Lumbar spinal stenosis (canal narrowing) |
| Referred pain | Back pain from structures outside the spine (kidney stones, aortic aneurysm, retroperitoneal pathology) | Visceral origin; not musculoskeletal |
| Inflammatory back pain | Stiffness worse in the morning (>30 min), improves with movement; in younger adults | Axial spondyloarthritis (ankylosing spondylitis) |
If your back pain radiates down your leg below the knee, this points to sciatica rather than mechanical back pain. See: Sciatica: symptoms, causes & treatment →
Common Causes
- Muscle and ligament strain — the most common; over-exertion, awkward lifting, prolonged poor posture; heals well with activity and analgesia
- Prolapsed / herniated disc — inner disc material pushes through the outer annulus; may compress a nerve root causing sciatica
- Osteoarthritis of the facet joints — degenerative joint changes between vertebrae; more common with age; contributes to spinal stenosis
- Spinal stenosis — narrowing of the spinal canal, usually from degenerative changes; causes neurogenic claudication
- Vertebral fracture — in older adults with osteoporosis, minor trauma or even coughing can cause vertebral compression fracture; presents as acute-onset severe back pain
- Spondylolisthesis — forward slippage of one vertebra over another; can be mechanical or degenerative
- Inflammatory arthritis — ankylosing spondylitis, psoriatic arthritis; young adults; characteristic pattern of inflammatory (not mechanical) back pain
Symptoms
- Local back pain — in the lower back, mid-back, or neck; aching, sharp, or spasming
- Referred pain into the buttock, hip, or upper thigh — common in mechanical back pain; does not indicate nerve root involvement unless below the knee
- Stiffness after rest or on waking — improves with movement in mechanical back pain; prolonged morning stiffness (>30 minutes) in inflammatory disease
- Muscle spasm alongside pain — protective tightening of paraspinal muscles; can be very painful independently
- Limited range of movement — particularly in acute episodes
Red Flags: When Back Pain Is Serious
Seek emergency care immediately (999 or A&E) for back pain with:
• New bladder or bowel dysfunction — inability to urinate, urinary/faecal incontinence, or retention
• Saddle anaesthesia — numbness in the perineum, inner thighs, or buttocks
• Progressive bilateral leg weakness
These suggest cauda equina syndrome — a surgical emergency.
See a GP urgently (same day or next working day) for back pain with:
- Fever alongside back pain — possible spinal infection or discitis
- Onset after significant trauma
- Progressive neurological deficit — worsening weakness or expanding area of numbness
- History of cancer, immunosuppression, or prolonged steroid use
- Unexplained weight loss alongside back pain
- Thoracic (mid-back) pain without a clear mechanical cause
- Onset under 20 or over 55 with no prior back pain history
- Pain significantly worse at night, or waking from sleep
Natural Recovery and What Helps
For non-specific mechanical back pain, the evidence on management is clear:
- Stay as active as possible — bed rest is actively harmful and is associated with slower recovery and increased chronicity risk. Light activity — walking, gentle movement — is the single most evidence-based recommendation
- Return to normal activities as soon as pain allows — not waiting for complete resolution before resuming activity
- NSAIDs for short-term pain relief — reduce pain and inflammation sufficiently to enable movement; take with food; short course
- Paracetamol — useful additional analgesia; can be combined safely with NSAIDs
- Address psychosocial factors — fear of movement (kinesiophobia), catastrophising, and poor recovery expectations are stronger predictors of chronicity than the severity of initial pain
Treatment Overview
| Phase | Treatment |
|---|---|
| Acute (<6 weeks) | Stay active; NSAIDs ± paracetamol; heat/ice; reassurance about natural recovery |
| Subacute (6–12 weeks) | Physiotherapy; structured exercise; address psychosocial factors; NSAIDs for flares |
| Chronic (>12 weeks) | Exercise therapy; pain management programme; psychological support (CBT/ACT); NSAIDs for flares; avoid long-term opioids per NICE NG193 |
Prescription NSAIDs for back pain: Pain relief treatments at Access Doctor →
For chronic back pain guidance including NICE NG193: Chronic pain treatment UK →
Frequently Asked Questions
What causes most back pain?
Over 95% of back pain is non-specific mechanical — caused by muscle or ligament strain, facet joint irritation, or unidentifiable structural changes. A minority has an identifiable cause such as a prolapsed disc (causing sciatica), spinal stenosis, or vertebral fracture.
How long does back pain last?
Most acute non-specific back pain resolves within 4–8 weeks with appropriate self-management. Staying active and avoiding bed rest is consistently associated with faster recovery. Back pain persisting beyond 12 weeks is classified as chronic and usually requires a different approach.
Is bed rest good for back pain?
No — bed rest is actively associated with slower recovery and increased risk of chronicity. Staying as active as pain allows, and returning to normal activities as soon as possible, gives better outcomes. Light walking and gentle movement are recommended.
When should I go to A&E for back pain?
Go to A&E immediately if back pain is accompanied by new loss of bladder or bowel control, numbness in the saddle area (perineum and inner thighs), or progressive weakness in both legs. These may indicate cauda equina syndrome, a surgical emergency.
What is the best painkiller for back pain?
NSAIDs (ibuprofen, naproxen) are recommended by NICE for short-term relief of acute back pain. They reduce both pain and the inflammatory component that makes it worse. Take with food. Paracetamol can be added for additional relief and is safe to combine with NSAIDs.
References
- NICE. Low back pain and sciatica in over 16s. NG59. 2016 (updated 2020). nice.org.uk/guidance/ng59
- NICE. Chronic pain (primary and secondary) in over 16s. NG193. 2021.
- NHS. Back pain. nhs.uk/conditions/back-pain
- Versus Arthritis. Back pain. versusarthritis.org
Medical disclaimer: This article is for informational purposes only and does not constitute medical advice. Always consult a qualified healthcare professional. In a medical emergency, call 999.
