Back pain is the leading cause of disability in the UK and one of the most common reasons people visit their GP or take time off work. Around 80% of people will experience significant back pain at some point in their lives. While it can be very painful and distressing, the vast majority of back pain episodes — including severe ones — resolve within a few weeks to months with appropriate management, and most people do not require surgery.
Types of Back Pain
Non-specific low back pain is by far the most common type, accounting for around 85% of back pain cases. It has no single identifiable structural cause — pain arises from muscles, ligaments, joints, and intervertebral discs working together. It is typically triggered by movement, posture, or strain. Specific back pain has an identifiable cause such as a prolapsed (slipped) disc, spinal stenosis, osteoporosis-related vertebral fracture, spondylolisthesis, or rarely, a serious underlying condition such as cancer or infection. Radicular pain (sciatica) occurs when a nerve root in the spine is compressed or irritated, causing pain, numbness, or tingling that radiates down one or both legs. Back pain with referred pain — pain from other organs (kidneys, aorta, pancreas) that presents as back pain without a spinal cause.
Red Flag Symptoms: When Back Pain Is an Emergency
Most back pain is not a medical emergency, but certain symptoms — “red flags” — require urgent medical attention. Seek immediate help (999 or A&E) if you have back pain with loss of bladder or bowel control, numbness around the genitals, inner thighs, or buttocks (saddle anaesthesia), or significant weakness in both legs — these may indicate cauda equina syndrome, a surgical emergency. See your GP urgently if back pain follows a significant injury or fall, if you have unexplained weight loss alongside back pain, if you have a history of cancer, if the pain is constant and severe, not relieved by rest, and worsens at night, if you have fever with back pain (suggesting infection), if you are over 50 and have had a new onset of back pain after a minor fall (possible vertebral fracture), or if you are under 20 or over 55 with back pain for the first time.
What Causes Back Pain?
Back pain has many potential contributing factors. Physical factors include muscle or ligament strain (often from lifting, awkward movements, or prolonged poor posture), degeneration of intervertebral discs and facet joints (osteoarthritis of the spine), prolapsed or herniated disc, spinal stenosis (narrowing of the spinal canal, more common with age), scoliosis (abnormal spinal curvature), and vertebral compression fractures (common in osteoporosis). Psychological and social factors — including stress, anxiety, depression, job dissatisfaction, and catastrophising (excessively negative thoughts about pain) — significantly influence back pain severity, chronicity, and disability. These are known as “yellow flags” and are highly predictive of long-term disability. Lifestyle factors include obesity, sedentary behaviour, smoking, and poor physical fitness.
NHS Treatment for Back Pain
Current NHS and NICE guidance emphasises active management of back pain rather than rest. Staying active is the single most important recommendation — bed rest worsens back pain and prolongs recovery. Continue normal activities as much as possible. Analgesia: paracetamol is generally recommended first for mild pain, with NSAIDs (ibuprofen, naproxen) for moderate pain. Muscle relaxants (diazepam) are occasionally used short-term. Stronger opioids should be avoided for non-specific back pain due to poor long-term outcomes and dependence risk. Physiotherapy is the most important treatment for persistent back pain. A physiotherapist can assess movement, provide targeted exercises, manual therapy (mobilisation and manipulation), and education to support recovery and prevent recurrence. NHS physiotherapy is available on referral or through direct access self-referral in many areas. Exercise — including yoga, Pilates, swimming, and strengthening exercises — is strongly recommended for both treating and preventing back pain. Psychological support — CBT and pain management programmes — are recommended for chronic back pain with significant psychological distress.
Sciatica: Causes, Symptoms and Treatment
Sciatica describes pain caused by irritation or compression of the sciatic nerve, which runs from the lower back down through the buttock and along the back of the leg to the foot. It most commonly results from a prolapsed disc at L4/5 or L5/S1 compressing nerve roots. Symptoms include sharp, shooting, or burning pain radiating from the lower back through the buttock and down one leg (occasionally both), often worsening with sitting, coughing, or straining; numbness or tingling in the leg or foot; and in severe cases, muscle weakness in the affected leg. Most cases of sciatica resolve within 4–12 weeks with physiotherapy and analgesia. Surgery (discectomy) is considered if symptoms persist beyond 6–12 weeks despite conservative treatment, or if there is progressive neurological deficit.
Chronic Back Pain Management
When back pain persists beyond three months, it is classified as chronic. Chronic back pain is best managed through a biopsychosocial approach — addressing physical, psychological, and social aspects simultaneously. NHS pain management programmes (PMPs) — typically delivered as group programmes over several weeks — are highly effective for chronic pain and are available in most areas via GP referral. They incorporate education about pain science, CBT for pain, graded activity and exercise, relaxation, and lifestyle management. Understanding that chronic pain does not necessarily mean ongoing tissue damage — and that the nervous system can become sensitised — is central to modern pain management and helps reduce fear-avoidance behaviour.
Back Pain Surgery: When Is It Appropriate?
Surgery for back pain is appropriate for a minority of people — those with clear structural causes unresponsive to conservative treatment, progressive neurological deficits, or emergency cauda equina syndrome. Common procedures include discectomy (removing part of a prolapsed disc compressing a nerve), spinal decompression (for spinal stenosis), and spinal fusion (for instability or spondylolisthesis). NICE does not recommend spinal fusion for non-specific chronic low back pain, as evidence shows it is no more effective than intensive physiotherapy. Disc replacement and other interventional procedures such as facet joint injections and epidural steroid injections have limited evidence and are not routinely recommended on the NHS for non-specific back pain.
Important: Back pain — even severe back pain — usually resolves with time and active management. Staying active, seeking physiotherapy, and addressing psychological factors where present are the most evidence-based approaches. If you are concerned about red flag symptoms, please seek medical attention promptly.
Related Health Guides on YourHealthXpert
Explore these related NHS-aligned health guides:
- Arthritis — osteoarthritis of the spine is a common cause of back pain, especially in older adults
- Anxiety and Depression — chronic pain and depression are closely linked; psychological treatment improves pain outcomes
- Vitamin D Deficiency — vitamin D deficiency causes musculoskeletal pain and bone aches often mistaken for back pain
- Fibromyalgia — widespread musculoskeletal pain including back pain is a key feature of fibromyalgia
- Osteoporosis — vertebral fractures from osteoporosis cause sudden severe back pain, especially in postmenopausal women