Low back pain is one of the most common reasons people seek help, and one of the most misunderstood. If yours has hung around for more than a few months, you've probably been told a dozen different things about what's “wrong” with your back. The evidence tells a more hopeful — and genuinely more empowering — story: persistent back pain is rarely a sign of serious damage, and movement is medicine rather than a threat.
What is it?
Chronic low back pain simply means back pain that has persisted for more than about three months. In the large majority of cases it's classed as “non-specific,” which means there's no single structure that can be confidently blamed and, importantly, no serious disease behind it (NICE, 2020).
That word “non-specific” can feel unsatisfying when you're the one living with the pain, but it's actually good news: it means the pain is usually being kept going by a mix of factors we can genuinely influence — how conditioned and strong you are, how you move, how your sleep and stress levels are, and how your nervous system has become sensitised over time — rather than by ongoing structural harm or damage that's steadily getting worse.
It's worth understanding a little about pain sensitisation, because it explains a lot about why chronic pain doesn't always match what's visible on a scan. Over time, a nervous system that has been dealing with pain signals can become more efficient at producing pain, sometimes in response to smaller and smaller triggers — a bit like a smoke alarm becoming so sensitive it goes off from steam in the shower. This doesn't mean the pain isn't real; it very much is. It means that turning the volume back down involves more than just targeting a single structure in the spine.
Why does it happen?
Persistent back pain is best understood as multifactorial, which is a slightly clinical way of saying that several things usually combine to keep it going. Physical factors such as deconditioning — the natural loss of strength, flexibility and general fitness that happens when someone becomes less active because of pain — and changes in how you move play a genuine part, but so do sleep quality, stress levels, worry about the pain itself, and beliefs about what movement might do to your back.
When someone avoids activity because they fear damaging themselves further, a somewhat unhelpful cycle can develop: the back gets weaker and more deconditioned, confidence in movement drops, and the pain often becomes more entrenched rather than less, even though the original tissue has usually long since healed. None of this means the pain is “all in your head” — it's very real, and it's not something a person is choosing or imagining. It simply means the levers that turn it down are broader than a single structure in your spine, and addressing several of them together tends to work better than searching for one specific culprit.
What does it feel like?
It varies enormously from person to person — an ache, a stiffness, a soreness that's linked to certain movements or positions, sometimes spreading into the buttock or thigh. It tends to fluctuate over time, with better spells and worse spells, and is often worse after prolonged sitting, a poor night's sleep, a stressful period, or a sudden increase in activity beyond what the back is currently used to.
A small number of back-pain presentations carry warning signs, often called red flags, that need urgent medical attention rather than routine physiotherapy assessment, which we'll come to in detail below. The great majority of chronic low back pain, however, doesn't fall into this category and responds well to an active, evidence-based approach.
Conditions that can look similar
A small proportion of back pain has a more specific cause that needs a different approach. Sciatica, caused by irritation or compression of a nerve root, causes pain that travels down the leg, often below the knee, sometimes with numbness, tingling or weakness following a specific nerve pattern — this is a genuinely different presentation from the more localised ache of non-specific back pain and is covered in more detail in its own dedicated guide. Spinal stenosis, more common in older adults, causes leg pain and heaviness that's typically worse with walking and standing and better with sitting or leaning forward. Inflammatory back pain, seen in conditions such as ankylosing spondylitis, tends to affect younger adults, is worse with rest and better with movement, and often comes with prolonged morning stiffness lasting more than 30 minutes. And, rarely, back pain can be a symptom of something more serious entirely, which is exactly why red-flag screening is a standard and important part of every assessment, however likely a straightforward mechanical cause seems.
How we assess it
The first job of any assessment is to screen carefully for the rare but serious causes — the red flags discussed below. Once those are confidently excluded, we're not usually hunting for a single “damaged” structure, because in non-specific back pain there often genuinely isn't one to find. Instead we look at how you move, how strong and confident you are through functional tasks, and the broader factors feeding into your pain, including relevant psychological and lifestyle factors such as sleep, stress and activity levels.
Scans are frequently unhelpful in this context and can even be counterproductive, because the changes they show — disc bulges, degeneration, and similar findings — are extremely common in people with no back pain at all, and seeing these terms on a report can sometimes increase worry and fear of movement without changing the treatment plan. We use imaging selectively, only when there's a specific clinical reason to suspect something that would change our management, such as a red flag or a lack of expected progress.
How it's treated
The evidence and national guidance are clear and remarkably consistent on this point: exercise and staying active are the mainstay of treatment, supported by clear education and genuine reassurance (NICE, 2020; Foster et al., 2018). The best type of exercise is largely the one you'll actually do consistently and enjoy enough to stick with — walking, strength training, Pilates, swimming, or whatever gets you moving regularly and gradually builds physical capacity and, just as importantly, confidence in your back.
A sensible programme typically starts with restoring comfortable, confident movement in everyday tasks, before progressively building general strength and specifically targeting the muscles that support the spine — the deep core, glutes and back extensors — and finally returning to whatever activities or sports matter most to the individual. Hands-on treatment such as massage or manual therapy can help provide short-term relief and make it easier to get moving, but current guidance is specific that it should be used as part of a broader package that includes exercise, rather than relied upon on its own as a standalone treatment.
It's also worth knowing clearly what the evidence does not support, because these are treatments many people have tried without lasting benefit: national guidance recommends against routine use of ultrasound therapy, TENS machines and spinal traction for low back pain, and against long-term reliance on strong painkillers such as opioids, which carry real risks without solving the underlying problem. Where worry, low mood or a significant fear of movement are prominent features, addressing those directly — sometimes alongside a psychologically-informed approach to the physical rehabilitation — is a genuine and valuable part of effective care, not an admission that the pain isn't physical.
Recovery here isn't always about the pain vanishing overnight, and setting that expectation honestly from the outset tends to lead to better outcomes than chasing a quick fix. It's about steadily rebuilding what you can do, turning down the sensitivity of the system over time through consistent, graded activity, and getting your life and function back — which, for the great majority of people, is entirely achievable with the right approach and enough consistency.
The role of graded exposure
One concept worth understanding is graded exposure — the idea of gradually reintroducing movements and activities that have become associated with pain or fear, in a structured, progressive way, rather than avoiding them indefinitely or attempting them all at once. For someone who has stopped bending forward because it once triggered a flare-up, this might mean starting with small, comfortable ranges of forward bending, building confidence and tolerance over days and weeks, and progressively working back towards full, unrestricted movement.
This approach recognises that avoidance, while it feels protective in the short term, often reinforces the belief that a movement is dangerous, which can keep the nervous system on high alert around that particular activity. Structured, gradual exposure — ideally guided by a clinician who can help pace the progression appropriately — tends to be far more effective at rebuilding genuine confidence than either forcing through pain or avoiding a movement altogether.
What you can do yourself
Keep moving and stay at work or engaged in your usual activities as much as you reasonably can — prolonged rest and avoidance tend to make things worse over time, not better, despite how counterintuitive that can feel when you're in pain. Choose a form of exercise you genuinely enjoy, since that's the one you'll actually keep doing, and build it up gradually rather than doing too much on a good day and crashing the next. Work on your sleep and stress levels alongside any physical exercise, since both measurably influence pain sensitivity, and gently challenge the belief that your back is fragile or easily damaged; in the vast majority of cases, it is a great deal more robust and resilient than it feels in the moment.
Flare-ups are a normal part of the recovery journey and don't mean you've undone your progress or damaged your back again. Ease back briefly on the most provocative activities if needed, use whatever self-management strategies have helped before, and return to your usual activity and exercise routine as soon as you reasonably can, rather than stopping altogether out of caution.
When to seek help
See a clinician if your back pain is persistent, disabling, or simply not improving as expected, so that you can get a clear, personalised plan rather than continuing to guess. Seek urgent medical attention for any red flags: numbness around the back passage or genitals (saddle anaesthesia), new difficulty controlling your bladder or bowels, weakness or numbness spreading in both legs, or back pain accompanied by unexplained weight loss, fever, or feeling generally and significantly unwell. These features, while uncommon, need prompt medical assessment rather than routine physiotherapy.
Frequently asked questions
Does a bulging disc mean I need surgery? Almost never on its own. Disc bulges are extremely common even in people with no pain at all, and the great majority of people with a disc bulge and back pain improve significantly with an active, conservative approach without ever needing surgery.
Is it safe to lift weights or exercise with chronic back pain? Yes, and it's actively encouraged as part of a well-graded programme. Building strength and confidence in loaded movement is one of the most effective long-term strategies for reducing chronic back pain, provided the programme is appropriately progressed.
Why does my back pain move around or vary day to day? This is common and expected in non-specific back pain, reflecting the influence of factors like sleep, stress, activity levels and general sensitisation, rather than indicating that something new or different is going wrong each time.
At BPR we'll rule out anything serious with a thorough assessment, give you a straightforward and genuinely reassuring explanation of what's going on, and build an active, personalised plan to get you moving and confident again. You can book an assessment at bpr.rehab.
References
National Institute for Health and Care Excellence (NICE) (2016, updated 2020) Low back pain and sciatica in over 16s: assessment and management. NICE guideline [NG59]. Available at: https://www.nice.org.uk/guidance/ng59 (Accessed: July 2026).
Foster, N.E., Anema, J.R., Cherkin, D. et al. (2018) 'Prevention and treatment of low back pain: evidence, challenges, and promising directions', The Lancet, 391(10137), pp. 2368–2383.