Guide
When to see a doctor for back pain
Most back pain gets better on its own with time and staying active. A few warning signs mean you should get medical care instead of starting an exercise routine.
Key takeaways
- Most back pain is not caused by serious damage and improves within weeks.
- Numbness around the genitals or buttocks, or loss of bladder or bowel control, is an emergency.
- Pain after an injury, with fever, with unexplained weight loss, or that keeps getting worse needs to be checked.
Most back pain is not serious
Back pain usually improves within a few weeks or months 1. In most cases there is no serious cause, and guidelines recommend staying active, simple self-care, and exercise rather than tests 23. The point of knowing the warning signs is to catch the small number of cases that are different.
Get emergency care right away
Go to an emergency department or call 911 (or your local emergency number) if you have back pain with any of these. They can be signs of pressure on the nerves at the base of the spine, which needs urgent treatment 14:
- Numbness or tingling around your genitals, buttocks, or inner thighs
- Trouble peeing, or loss of bladder or bowel control
- Weakness or numbness in both legs, or weakness that is getting worse quickly
- Chest pain or shortness of breath along with upper back pain
See a doctor soon
Book an appointment promptly if you have back pain and 15:
- It started after a fall, car accident, or other injury
- You have a fever or feel generally unwell
- You have lost weight without trying, or have a history of cancer
- It is severe and constant, or worse at night and when lying down
- It spreads down a leg below the knee with numbness, tingling, or weakness
- It is not improving after a few weeks, or keeps getting worse
Another pattern worth raising with a doctor: stiffness that lasts a long time most mornings, gets better with exercise but not rest, and started gradually before your mid-forties. That can point to an inflammatory condition. The morning stiffness guide explains more.
Do I need a scan?
Usually not. Guidelines advise against routine X-rays or MRI for back pain without warning signs 23. Scans often show disc and joint changes that are common in people with no pain at all, and they rarely change what helps. A clinician will order imaging if your symptoms suggest it is needed.
What is usually fine to manage yourself
- An ache or stiffness that eases as you move.
- Soreness the day or two after new or harder exercise. See sore back after the gym.
- Stiffness from sitting that eases when you get up and move. See back pain from sitting.
For these, staying active and a sensible routine are what guidelines recommend. Exercises for lower back pain is a good place to start.
Where an app fits, and where it doesn’t
An exercise app like Remedy is for everyday back pain in people who have no warning signs and are able to exercise. It is not a diagnosis, it cannot examine you, and it is not a substitute for a doctor or physical therapist. If anything on this page applies to you, get it checked first.
Questions
Do I need an X-ray or MRI for back pain?
Usually not. Guidelines advise against routine imaging for back pain without warning signs, because scans rarely change what helps and often show changes that are normal with age.
When is back pain an emergency?
Go to an emergency department or call 911 if you have numbness around your genitals or buttocks, trouble peeing or loss of bladder or bowel control, or weakness in both legs.
How long should back pain last before I see a doctor?
See a doctor if it is not improving after a few weeks, is getting worse, or is stopping you from doing daily activities, or sooner if you have any warning signs.
Sources
- Back pain (NHS Health A to Z). NHS, 2026.
- Low back pain and sciatica in over 16s: assessment and management (NG59). National Institute for Health and Care Excellence, 2016, updated 2020.
- Foster NE, et al. Prevention and treatment of low back pain: evidence, challenges, and promising directions. The Lancet. 2018;391(10137):2368-2383.
- Sciatica. NHS, 2026.
- Back pain (MedlinePlus health topic). MedlinePlus, U.S. National Library of Medicine, 2026.
This guide is general fitness information, not medical advice. How we write our guides.
