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Injuries & Conditions

Lower back pain: causes, treatment, and when to worry

Mary GhoroghiRegistered Physiotherapist8 min read

Key takeaways

  • Most lower back pain is mechanical and not dangerous, and the large majority settles within a few weeks.
  • Movement and staying active speed recovery, while prolonged bed rest tends to make back pain worse.
  • Treatment works best when it targets the cause of the pain, not only the sore spot you feel.
  • Red flags such as loss of bladder or bowel control or saddle numbness need emergency care the same day.
  • Physiotherapy can assess and treat most back pain without a referral, scans, or surgery in BC.

Lower back pain is one of the most common reasons people see a physiotherapist, and the reassuring truth is that most of it is mechanical, not dangerous, and improves within a few weeks. The most effective treatment is rarely rest. It is the right movement, started early, guided by an assessment that finds why your back is sore in the first place.

What causes lower back pain?

Most lower back pain is mechanical, meaning it comes from how the joints, discs, and muscles of the spine move and load, rather than from disease or serious damage. In a large share of cases no single structure can be precisely named, and that is normal. What matters more is how the back is moving and what is overloading it.

The common patterns we assess fall into a few groups:

  • Mechanical and postural strain, from prolonged sitting, a sudden awkward lift, or holding one position too long, which irritates the joints and soft tissue of the lower back.
  • Muscular pain and spasm, where the muscles around the spine tighten protectively after a strain and feed back into the pain.
  • Disc-related pain, where the cushioning disc between two vertebrae becomes irritated or bulges and presses on nearby tissue, sometimes referring pain or tingling into the leg.
  • Age-related joint change, including the wear and stiffening that builds up over the years and can flare under load.

These patterns often overlap. A disc that is settling down can leave the surrounding muscles guarding, and poor movement habits can keep a simple strain going for longer than it should. Telling them apart is the job of a proper assessment, which is why naming the cause matters more than naming the diagnosis on a scan.

Is lower back pain dangerous?

For the large majority of people, lower back pain is not dangerous, even when it is severe. Pain intensity is a poor guide to how serious a back problem is. A muscle spasm can be agonising and completely harmless, while a more significant problem can ache quietly. This is why the assessment looks for specific warning signs rather than judging by how much it hurts.

It also helps to know that scans often show changes such as disc bulges and wear in people who have no pain at all. Finding a disc bulge on an MRI does not always mean it is the source of your symptoms, and imaging is not needed for most back pain. A clinical assessment is usually a better guide to what is actually driving your pain.

Lower back pain red flags: when to seek urgent care

A small number of warning signs point to something that needs urgent medical attention rather than routine care. If you have any of the following, go to an emergency department the same day, not next week.

These signs are uncommon, but they matter because acting fast changes the outcome. If you are unsure whether what you are feeling counts, treat it as urgent and get assessed. Everything below this point is about the ordinary mechanical back pain that makes up the vast majority of cases.

Why movement beats bed rest

Staying active is one of the best things you can do for ordinary lower back pain. The evidence is consistent: continuing your normal activities within the limits of the pain leads to faster recovery, less time off work, and fewer recurrences than resting in bed. Prolonged bed rest does the opposite. It stiffens the joints, weakens the muscles that support the spine, and tends to delay recovery.

That does not mean pushing through severe pain. It means easing back into gentle movement as soon as you can, taking the load off only for the first day or two of a bad flare, and then gradually rebuilding. Light walking, changing position often, and avoiding heavy lifting or twisting for the first few weeks is a sensible starting point for most people.

How physiotherapy finds and treats the cause

Good treatment starts by finding the cause, not by chasing the sore spot. At Azalea, a physiotherapy assessment looks at how your spine moves, how your hips and core support it, and which positions and loads bring the pain on. That tells us whether you are dealing with a joint, a disc, a muscular pattern, or a movement habit, and it shapes a plan built around your specific back rather than a generic stretch sheet.

Treatment usually combines a few elements: hands-on techniques to settle pain and restore movement, a progressive exercise plan to rebuild the strength and control that protect the spine, and practical advice on how to sit, lift, and pace your day. For some people, osteopathy adds whole-body manual treatment that addresses how the pelvis, hips, and spine work together, and acupuncture can help calm a stubborn flare. Because the clinic is multidisciplinary, these sit under one coordinated plan rather than scattered across separate appointments.

You do not need a referral to see a physiotherapist in BC, and you rarely need a scan to start. If something in the assessment suggests you need imaging or a medical opinion, we will tell you and help you get there. You can read more about how we approach back and neck pain and what a first visit involves.

How long does lower back pain take to recover?

Most acute lower back pain improves substantially within a few weeks. A typical flare of mechanical back pain eases over two to six weeks as the irritation settles and movement returns. Pain that has been there for longer, or that keeps coming back, tends to recover in stages and benefits from a structured plan that rebuilds strength rather than waiting it out.

Recurrence is common, which is why the goal is not only to settle this episode but to leave you stronger and moving better than before it started. Your physiotherapist will give you a realistic timeline after the first assessment, based on what is actually driving your pain.

How to prevent lower back pain coming back

You cannot prevent every flare, but a few habits genuinely lower the odds and shorten the ones you do get.

  • Keep moving regularly. Break up long periods of sitting, and build general activity such as walking into most days.
  • Build strength in the muscles that support your spine, including the core, hips, and glutes, and keep it up once the pain settles.
  • Lift with your legs, keep the load close, and avoid lifting and twisting at the same time.
  • Set up your workstation so you are not held in one strained position for hours, and change posture often.
  • Treat flares early with movement rather than rest, so a short episode does not become a long one.

If your back pain is not settling, keeps returning, or is limiting your work and daily life, it is worth getting assessed so the plan targets your specific cause. You can book at either West Vancouver location, in English or Farsi, without a referral.

Common questions

What is the most effective treatment for lower back pain?
For most people, staying active combined with targeted exercise and hands-on physiotherapy works better than rest or medication alone. Treatment is most effective when it addresses the cause of the pain, such as a movement pattern or weakness, rather than only the sore area.
Should I rest or stay active with lower back pain?
Stay active within the limits of your pain. Evidence shows that continuing ordinary activity speeds recovery and reduces recurrence, while prolonged bed rest tends to delay healing. Ease off only for the first day or two of a sharp flare, then gradually return to movement.
When should I worry about lower back pain?
Seek emergency care the same day if you lose bladder or bowel control, develop numbness around the groin or inner thighs, have progressive leg weakness, or have back pain with a fever. These are uncommon but signal a problem where early treatment protects against lasting damage.
Do I need an MRI or scan for lower back pain?
Usually not. Most lower back pain is mechanical and can be assessed and treated without imaging. Scans often show disc bulges and wear in people with no pain, so they can mislead. Imaging is reserved for cases with red flags or symptoms that do not improve as expected.
Do I need a referral to see a physiotherapist for back pain in BC?
No. You can book physiotherapy directly in British Columbia without a doctor referral. At Azalea you can start with an assessment at either West Vancouver location, and we direct-bill most extended health plans, ICBC, and WorkSafeBC.
How long does lower back pain usually last?
Most acute lower back pain improves substantially within two to six weeks. Longer-standing or recurring pain recovers in stages and responds best to a structured plan that rebuilds strength, rather than simply waiting for it to pass.

Written by

Mary Ghoroghi

Registered Physiotherapist

Mary founded Azalea in 2011 and still treats most days. She trained at Tehran University of Medical Sciences, holds a master’s in physiotherapy, and is a certified medical acupuncturist who has taught the next generation of clinicians as a placement instructor at the University of Alberta Hospital. Patients come to her for the problems other clinics have only managed: she finds the cause, then explains it in plain language. She treats in English and Farsi.

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