MRI Findings Explained | What's Normal and What's Not

Published March 4, 2026 · 10 min read

By Tauri Urbanik, Pain Science Researcher

Your MRI report sounds scary. Here's what it actually means.

You got your MRI results back. The report is full of terms like "disc bulge," "degenerative changes," "stenosis," "annular tear." It sounds like your spine is falling apart.

But here's what the radiology report doesn't tell you: almost everything on that list appears in people who feel perfectly fine. The findings are real. But they're almost certainly not causing your pain.

This page translates every common MRI finding into plain language. And more importantly, it shows you how common each finding is in people with zero pain.

The research that changes everything

In 2015, Brinjikji and colleagues published a systematic review that should be required reading for anyone with an MRI report (Brinjikji et al., AJNR, 2015↗). They analyzed 33 studies covering over 3,110 people who had absolutely no pain. No symptoms at all. Then they scanned their spines.

What they found redefines what "normal" means on an MRI.

Read that table carefully. These are people with NO pain. Completely asymptomatic. And the vast majority have MRI findings that, in a clinical context, would be labeled as "abnormalities" and potentially blamed for pain.

Finding by finding: what each one actually means

Disc degeneration ("degenerative disc disease")

What the report says: Degenerative disc disease. Desiccation. Signal changes.

What it actually is: Your disc has lost some water content. It's shorter and drier than it used to be. This is the same process that makes your skin less elastic as you age. It's called "disease" on MRI reports, but it's a normal part of aging. Not a disease at all.

How common in pain-free people: At age 40, half of pain-free people have it. By 80, it's 96%. Nearly universal. And painless.

Disc bulge

What the report says: Broad-based disc bulge. Bulging disc at L4-L5 or L5-S1.

What it actually is: The outer ring of your disc extends slightly beyond the vertebral body. Think of it like a hamburger patty that's slightly wider than the bun. It's not a rupture. It's not herniation. It's a mild, common change in disc shape.

How common in pain-free people: At age 40, 50% of pain-free people have disc bulges. By 80, 77% do. With zero symptoms.

Disc herniation / protrusion

What the report says: Disc herniation. Disc protrusion. Focal disc extrusion.

What it actually is: Part of the disc's inner material has pushed through the outer ring. This sounds more dramatic than a bulge, and it can be clinically significant if it compresses a nerve root. But many herniations are asymptomatic.

How common in pain-free people: About 30% of pain-free people at any age have disc protrusions. Most never know.

When it might matter: If you have specific nerve compression symptoms. Radiating pain following a nerve path (like sciatica down a specific leg), measurable weakness in specific muscles, or numbness in a predictable dermatome. These are testable signs that a herniation is compressing a nerve. Without them, the herniation is likely an incidental finding.

Annular tear / fissure

What the report says: High-intensity zone. Annular fissure. Annular tear.

What it actually is: A small tear in the outer ring of the disc. "Tear" sounds alarming, but these are extremely common and usually painless. They're part of normal disc aging.

How common in pain-free people: About 20% across ages, slowly increasing. Present in millions of people who feel nothing.

Spinal stenosis

What the report says: Spinal stenosis. Narrowing of the spinal canal. Foraminal narrowing.

What it actually is: The channel your spinal cord runs through has narrowed, usually due to bone growth or disc changes. Severe stenosis can cause genuine nerve compression. But mild to moderate stenosis is frequently asymptomatic.

When it might matter: Severe stenosis with neurological symptoms like leg weakness, difficulty walking, or bowel/bladder changes warrants medical evaluation. Mild stenosis found on MRI in someone with garden-variety back pain is usually not the cause.

Facet degeneration

What the report says: Facet arthropathy. Facet joint degeneration. Facet hypertrophy.

What it actually is: The small joints connecting your vertebrae have developed some arthritis. This is normal wear and tear, just like knee arthritis. It increases with age.

How common in pain-free people: At age 60, 32% have it. By 80, 83% do. Mostly painless.

The nocebo effect: when your MRI makes pain worse

Here's something most doctors don't discuss. Research shows that the language on MRI reports can actually increase your pain.

When you read words like "degeneration," "disease," "tear," and "herniation," your brain interprets them as evidence of damage. Evidence of danger. And a brain that perceives danger produces more pain.

This is called the nocebo effect. The opposite of placebo. Scary medical language literally amplifies your pain experience. Not because you're suggestible. Because that's how all brains work. The brain uses available information to calibrate its pain response. Threatening information turns the pain up.

Studies have shown that patients who receive alarming MRI results report more pain, more disability, and worse outcomes than patients with the same findings described in neutral language. The finding is the same. The words change the pain.

So when does an MRI finding actually matter?

MRI findings are clinically relevant when they match specific, testable neurological signs.

A disc herniation matters when it's clearly compressing a specific nerve root AND you have corresponding symptoms in the exact distribution that nerve root supplies. Specific muscle weakness. Specific numbness pattern. Pain that follows a defined nerve pathway.

Severe spinal stenosis matters when there are progressive neurological deficits. Difficulty walking. Bladder or bowel changes. Measurable loss of function.

These situations exist. They're real. They require structural treatment. But they're a small fraction of all chronic back pain cases.

For most chronic pain patients, MRI findings are age-related changes that happen to coexist with pain. Correlation, not causation. Like blaming gray hair for your headache.

L

Linda, 56

back pain for 7 years

Linda's MRI report said "multilevel degenerative disc disease with broad-based disc bulge at L4-L5 and moderate facet arthropathy." It sounded terrible. She was afraid to bend, lift, or exercise. She spent $8,000 on injections targeting those findings. No improvement. When she saw the Brinjikji data and realized that 68% of pain-free people her age have disc degeneration, something shifted. The MRI hadn't shown damage. It had shown aging. Her fear dropped. Her movement increased. And gradually, her pain followed.

Composite story based on common patient patterns. Not a specific individual.

What to do with your MRI results

Your MRI findings are real. Nobody is saying the disc bulge or degeneration isn't there. It is. But so is the overwhelming evidence that these findings appear in pain-free people at remarkably high rates.

The question isn't whether the finding exists. It's whether it's causing your pain. And for most chronic back pain, the research suggests it's not.

If your MRI shows common age-related changes, and your pain doesn't match a specific nerve compression pattern, consider that your pain may be neuroplastic. Brain-generated through learned neural pathways, not structural damage.

Frequently asked questions

Are MRI findings normal in people without pain?

Yes. A landmark review of 3,110 pain-free people found that disc bulges, degeneration, and other 'abnormalities' are incredibly common. At age 40, 50% have disc bulges. At 80, 96% have disc degeneration. These findings are normal parts of aging, like gray hair.

What does degenerative disc disease mean on an MRI?

Despite the scary name, degenerative disc disease is a normal aging process, not a disease. Your discs lose water content and height over time, just like your skin loses elasticity. By age 60, 68% of pain-free people show this on MRI. The name itself can make pain worse through the nocebo effect.

Should I be worried about a disc bulge on my MRI?

In most cases, no. Disc bulges appear in 50% of pain-free 40-year-olds. They increase with age and are usually painless. A disc bulge alone doesn't explain chronic pain. However, if you have specific nerve compression symptoms like radiating leg pain with weakness, the finding may be relevant.

Can MRI results make my pain worse?

Yes. Research shows that scary MRI language like 'degeneration,' 'herniation,' and 'stenosis' can increase pain through the nocebo effect. When your brain interprets these words as evidence of damage, it produces more pain. This is why understanding what MRI findings actually mean matters.

References

1. Brinjikji W, et al. Systematic Literature Review of Imaging Features of Spinal Degeneration in Asymptomatic Populations. AJNR Am J Neuroradiol. 2015;36(4):811-816.DOI: 10.3174/ajnr.A4173