What it is
Spinal discs sit between the bones of your spine. A protrusion is when part of a disc pushes beyond its normal border. Related terms include “bulge” (broad, mild) and “herniation/extrusion” (more focal).
How common is it?
Very common, and it increases with age. Many people with no back pain whatsoever have disc bulges or protrusions on imaging.
What's usually next
Most cases are managed without surgery — time, physical therapy, and activity adjustments. Imaging findings are interpreted alongside your symptoms, not on their own.
When it usually isn't — and when it might be — worrying
Usually reassuring
- No nerve symptoms (numbness, weakness)
- Described as “mild” or “broad-based bulge”
- Pain that improves with movement and time
Worth discussing with your doctor
- Leg weakness, numbness, or shooting pain
- Loss of bladder or bowel control (seek urgent care)
- Symptoms that steadily worsen
Questions to ask your doctor
- 1Does this finding match my actual symptoms?
- 2Which nerve, if any, could this be affecting?
- 3What non-surgical options should I try first?
- 4Are there activities I should avoid or favor?
- 5What warning signs mean I should be seen urgently?
Educational use only. This explanation helps you understand terminology on your report. It is not a diagnosis, is not FDA-cleared, and does not replace your doctor. Bring questions to your care team.