Back pain: why most advice got reversed

Back pain is among the most common medical problems there is — around **eight
in ten people** experience it at some point. It is also the area where standard
medical advice has been most thoroughly reversed in the last thirty years, and
where a lot of people are still following the old version.

What changed

The old advice was rest, a scan, and painkillers. Modern guidelines recommend
close to the opposite:

Each reversal came from trials that found the intuitive treatment made outcomes
worse.

Why scans backfire

This is the least intuitive part. Imaging early, without red flags, is
associated with worse outcomes — more surgery, more disability, longer
recovery — and no better pain relief.

The reason is that spines look alarming on film even when they are fine. Disc
bulges, degeneration and herniations are common in people with **no pain at
all**, and the proportion rises steeply with age. A scan of a healthy
fifty-year-old will usually show something a report can name.

Being told you have a degenerated disc changes behaviour. People move less,
guard the area, and worry — all of which are associated with pain persisting
rather than resolving.

The red flags that do warrant a scan

Imaging is appropriate straight away if there is:

• Loss of bladder or bowel control, or numbness in the saddle area —
  this is an emergency
• Progressive weakness in a leg
• Unexplained weight loss or fever with the pain
• A history of cancer
• Significant trauma
• Pain that is worse at night and not relieved by lying still

Without these, the odds strongly favour ordinary mechanical back pain, which
resolves.

What actually helps

For acute pain (days to weeks): keep moving within tolerance, apply heat,
and use simple pain relief so you can stay active. Most acute episodes improve
substantially within a few weeks whatever is done.

For chronic pain (beyond three months) the evidence shifts towards
non-drug treatment: structured exercise of almost any kind, physiotherapy,
and psychological approaches such as CBT or mindfulness-based stress reduction.
That last category is sometimes taken as implying the pain is imagined. It is
not: chronic pain involves genuine changes in how the nervous system processes
signals, and those approaches target that mechanism.

The uncomfortable summary

For most people, most of the time, the effective treatment for back pain is to
keep using your back. That is a difficult thing to accept while it hurts, and
it is why the old advice persisted so long — it felt right.