When is back pain a reason to see a doctor?
Most back pain is mechanical and settles within six weeks with movement rather than rest. See a doctor the same day if the pain follows a fall, comes with fever, or is joined by numbness around the groin or loss of bladder control. Those signs change the plan. Everything else is a question of how you load the spine, how you sleep, and how quickly you get moving again.
What causes most back pain
Around nine in ten cases are mechanical: the muscles, discs and small joints of the lower back reacting to a load they were not prepared for. A long drive, a weekend of lifting, a new desk at the wrong height. The tissue is irritated rather than damaged, and it recovers.
Imaging in the first six weeks rarely changes what is done. Disc bulges appear on scans of people with no pain at all, which is why an early scan tends to add worry instead of information.
When to be seen the same day
Numbness around the groin or inner thighs, loss of bladder or bowel control, or weakness in both legs. This combination needs emergency assessment, not an appointment next week.
Pain that starts after a fall or a road accident, particularly over the age of 50.
Fever, night sweats or weight loss you cannot explain, alongside the pain.
Pain that wakes you every night and eases in no position at all.
What helps in the first two weeks
Keep moving. A short walk every couple of hours beats bed rest, which stiffens the back and slows recovery.
Heat for the first few days, then movement. A short course of anti-inflammatory medication is reasonable if nothing in your history speaks against it.
Change one thing about how you sit. The chair matters less than how long you stay in it.
What a specialist adds
If the pain has not eased after six weeks, or if it radiates below the knee, an orthopedist or a neurologist examines the nerve pattern and decides whether imaging would change anything.
Physiotherapy has the best evidence for recurrent mechanical pain, and it works better started with a plan than after a year of episodes.
