Nerve root compression
In plain language
A spinal nerve root is being pressed by a nearby structure; the finding should be matched with symptoms and examination.
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3 things to know first
- It names what is pressed. A disc, bone spur, or narrowed passage may be the cause.
- Location matters. Different roots can produce different arm or leg symptoms.
- Compression is not identical to nerve damage. Imaging cannot measure nerve function by itself.
What it is
A nerve root is the first segment of a nerve leaving the spinal cord. Compression means a nearby structure touches or deforms it enough for the radiologist to describe pressure. A bulging or herniated disc, narrowed foramen, or arthritic joint may be involved.
Why it appears on your report
MRI shows discs, nerves, and other soft tissues; CT can show bone-related narrowing. The report usually identifies the spinal level and side. Those details help determine whether the image explains pain, tingling, numbness, or weakness.
How serious is it
Some people have nerve contact on imaging without symptoms. Persistent pain or objective weakness deserves clinical assessment; progressive neurological loss needs prompt attention.
When to seek care urgently
Seek urgent care for rapidly worsening weakness, new saddle numbness, or new loss of bladder or bowel control.
What usually happens next
- Compare the affected root with symptom location and examination.
- Review the structure causing pressure.
- Agree on treatment and follow-up with a clinician.
Further reading
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