Do I Need a Scan for Lower Back Pain?
Lower back pain is very common, and although it can feel worrying, it is rarely caused by anything serious. In most cases, you do not need a scan such as an X-ray or MRI. Guidance from the National Health Service (NHS) and the National Institute for Health and Care Excellence (NICE) supports this approach.
Why scans aren’t usually needed?
It might seem reassuring to have a scan, but they often don’t tell us what’s causing your pain. Changes like disc wear and tear are very common as we get older, even in people with no pain at all. Because of this, scans don’t usually change the treatment plan.
The NHS advises that most back pain improves within a few weeks with simple measures like staying active, gentle exercise, and physiotherapy.
When should you be concerned?
There are a small number of situations where further investigation is important. You should seek urgent medical advice if you notice:
- Difficulty controlling your bladder or bowels
- Numbness around your genitals or buttocks
- Severe or worsening weakness in your legs
- Unexplained weight loss, fever, or feeling generally unwell
- Pain that is constant, severe, and not improving
These symptoms are uncommon, but they may indicate a more serious problem that needs further tests.
What if the pain isn’t improving?
If your back pain isn’t getting better after several weeks, or it’s getting worse, your healthcare professional (GP or physiotherapist) may consider whether further investigation is appropriate. Scans are usually only recommended if the results would change how your treatment is managed, such as considering injections or surgery.
What this means for you
The good news is that most lower back pain settles with the right support. Physiotherapy focuses on helping you move with confidence, build strength, and get back to normal activities without relying on scans.
How physiotherapy can help
At Ambulant Physiotherapy, we follow NHS and NICE guidance to make sure you receive the right care at the right time, and only recommend investigations when they are truly necessary.
Physiotherapy plays a key role in managing lower back pain. Rather than relying on scans, treatment focuses on understanding your symptoms and helping you return to normal movements and activities safely. This may include guided exercises to improve strength and flexibility, advice on staying active, and support to build confidence in your back.
You’ll also be given practical strategies to manage flare-ups and reduce the risk of pain returning. For many people, this approach is just as effective if not more so than relying on imaging or passive treatments.
References
- NICE (2016, updated): Low back pain and sciatica in over 16s: assessment and management (NG59)
- NICE Quality Standard QS155: Low back pain and sciatica in over 16s
- NHS: Back pain guidance (www.nhs.uk/conditions/back-pain/)
