Red flags that need urgent assessment
Come to the emergency department immediately if you have loss of bladder or bowel control, numbness around the groin or inner thighs, or rapidly worsening weakness in both legs. Come in the same day for back pain with fever, back pain after significant trauma, or progressive weakness in one leg.
Red flags that need urgent assessment
Beyond the box above, get assessed promptly if you have back pain with unexplained weight loss, a history of cancer, or pain that is markedly worse at night and unrelieved by position.
These are uncommon. But they are the reason back pain should not be assumed benign indefinitely.
Mechanical back pain
By far the commonest category. Pain arising from muscles, ligaments and joints of the spine, often triggered by lifting, an awkward movement, prolonged sitting or a period of unusual activity.
Typical pattern: pain in the lower back, sometimes spreading into the buttock, worse with certain movements and better with others, no numbness or weakness in the legs.
Most of it settles within weeks. Keeping gently active speeds that up; prolonged bed rest slows it down.
Slipped disc and sciatica
A disc bulges and presses on a nerve root. The hallmark is pain travelling down the leg — often past the knee — sometimes with numbness, tingling or weakness in a specific pattern.
The important and reassuring fact: most disc prolapses improve without surgery. The disc material shrinks naturally over weeks to months. Surgery is considered for severe or progressive weakness, pain that remains unmanageable, or loss of bladder and bowel control (which is an emergency).
Spinal stenosis
Narrowing of the spinal canal, more common with age. Typical pattern: leg pain and heaviness that comes on with walking and eases when you sit or lean forward — many people notice they can walk further pushing a trolley.
Management ranges from physiotherapy and activity modification to spine treatment where symptoms are limiting.
Other causes worth knowing
- Osteoporotic fracture — sudden back pain in an older person after minimal or no injury. Worth assessing bone health rather than treating as a simple strain
- Inflammatory back pain — younger adults, prolonged morning stiffness, pain that improves with movement and worsens with rest. A different disease and a different treatment
- Referred pain — kidney stones, gallstones and pelvic conditions can all present as back pain
What actually helps
Ranked roughly by evidence for ordinary mechanical back pain:
- Keep moving. Gentle continued activity beats bed rest, which weakens the muscles supporting the spine
- Exercise and physiotherapy, particularly core and hip strengthening — the most effective long-term measure
- Pain relief, used to enable movement rather than to permit inactivity
- Heat, which many people find helpful for muscular pain
- Addressing the contributors: how you lift, how long you sit, sleep quality, weight, and stress — all of which genuinely affect back pain
- Injections or surgery, for the minority with a clear structural cause and matching symptoms
Why scans can mislead
This is worth internalising. Scans of people with no back pain at all routinely show disc bulges and degenerative changes — increasingly so with age.
So a finding on an MRI only means something if it matches your symptoms and examination. Being shown an alarming scan report without that correlation causes a lot of unnecessary fear, and occasionally unnecessary surgery.
That is why a proper examination comes first and imaging second — not the other way round.
This page is general health information, not medical advice. It cannot account for your history, medication or test results. Please speak to a qualified doctor about your own symptoms and treatment. If you think you are having a medical emergency, seek immediate help.