MRI Shows a Bulging Disc But No Pain? Why "Abnormal" Findings Are Normal
Two women walk out of the same imaging center with the same report: disc bulge at L4-L5, mild degenerative changes. One has had grinding back pain since her second baby, three years ago. The other feels fine and only got scanned because she volunteered for a research study.
Same finding. Same spine, more or less. One hurts and one doesn't. Whatever explains the difference, it isn't on the scan. That single observation, repeated across thousands of people in the imaging research, quietly takes apart most of what you've been told about your back.
Whether you're here because your scan is "mild" but you hurt, or because your scan looks scary and you're wondering, the data below is what you need.
The study that should be printed on every MRI report
In 2015, a group of radiologists pooled 33 imaging studies covering 3,110 people with one strict requirement: no back pain. None. Then they counted the "abnormalities."
Spine "abnormalities" in people with no back pain, by age
| Finding | 20s | 30s | 40s | 50s | 60s | 70s | 80s |
|---|---|---|---|---|---|---|---|
| Disc degeneration | 37% | 52% | 68% | 80% | 88% | 93% | 96% |
| Disc signal loss ("black disc") | 17% | 33% | 54% | 73% | 86% | 94% | 97% |
| Disc bulge | 30% | 40% | 50% | 60% | 69% | 77% | 84% |
| Disc protrusion | 29% | 31% | 33% | 36% | 38% | 40% | 43% |
| Annular fissure ("tear") | 19% | 20% | 22% | 22% | 23% | 24% | 29% |
| Facet degeneration | 4% | 9% | 18% | 32% | 50% | 69% | 83% |
| Spondylolisthesis | 3% | 5% | 8% | 14% | 23% | 35% | 50% |
Sit with a few of those numbers.
- 37% of pain-free 20-year-olds already have disc degeneration. Not retired warehouse workers. Women in their first job who feel great.
- Disc bulges: 30% at 20, 84% at 80, in people with zero pain. By retirement age, the bulge-free spine is the unusual one.
- "Annular tear," a phrase that sounds like your disc is ripping open, shows up in about one in five pain-free people at every age.
This wasn't the first warning. In 1994, researchers scanned 98 adults with no back pain and found that about two thirds had bulges, protrusions or other abnormalities. Only about a third had a "clean" scan.
The radiologists' own conclusion: these findings are likely part of normal aging and unrelated to pain. Normal abnormalities. Gray hair on the inside.
Why this breaks the usual back pain story
The usual story runs on a simple chain: you hurt, we scanned you, we found something, the something is why you hurt. The pain-free data breaks the chain at the third link. If 30% of pain-free women your age carry the same finding you were just handed, then finding it in you says very little. It's like blaming a house fire on the kitchen. Most houses that never burn down also have kitchens.
Push the logic one step further. If spinal wear caused pain, pain should climb with age the way wear does. Every row in that table rises steadily across the decades. But back pain that won't go away doesn't follow that curve. It peaks in the years when you're carrying the most, the kids and the job and the parents, and doesn't keep exploding into the 80s. Something that peaks with life load rather than spinal wear is telling you what it's made of.
None of this makes MRIs useless. The opposite. MRI is essential for what it was built for: ruling out tumors, fractures, infections, severe nerve compression. That's why a doctor's evaluation always comes first, and why guidelines save early imaging for cases with warning signs. The problem isn't the scan. It's the leap from "we found this" to "this is why."
When the report becomes the injury
This is where it stops being an academic point. The words on an MRI report are an active treatment, and radiology's vocabulary reads like a horror script: degenerative disc disease. Herniation. Annular tear. Desiccation.
Pain is produced by the brain as a protective alarm, and its volume scales with how much danger the brain believes you're in. Hand a woman in pain a document that says her spine is degenerating, and you have measurably raised the danger. Researchers call this the nocebo effect, placebo's evil twin. It's one reason guidelines discourage routine early scans for uncomplicated back pain: people who get early imaging tend to do worse, not better, than similar people who don't.
The loop goes like this. The scan finds a normal abnormality. The report names it like a disease. You start lifting the car seat like it's a bomb and getting out of bed like you're eighty. Guarding and fear feed the alarm. The pain gets worse. The worsening "confirms" the diagnosis. The report becomes the injury you never actually had. The pain is real and physical the whole way through.
If you're carrying a report like that, the table above is the antidote. Find your age column. That's how many women feel nothing while carrying your "abnormality."
How to read your own report without fear
- Let your doctor rule out the serious short list first. Tumor, fracture, infection, severe nerve compression. For the overwhelming majority, the answer is "none of the above," and that step is not optional.
- Translate the vocabulary. "Degenerative changes" means age-related wear (37% of pain-free 20-year-olds). "Bulge" means a very common shape (30% to 84% of pain-free people depending on age). "Desiccation" means discs losing water with age, like skin does. "Annular fissure" is a common finding present in about 1 in 5 pain-free people.
- Ask the only question that matters. Is this finding more common in women with my pain than in pain-free women my age? For bulges and degeneration, the honest answer is "barely, if at all."
- Check whether your pain even behaves like the finding. A fixed problem should produce consistent, same-spot pain that tracks what you lift. Pain that moves, flips sides, flares in hard weeks or the week before your period, and vanishes on vacation is behaving like an alarm. Why back pain flares when you're stressed.
- Then treat what's actually driving it. For pain that won't go away with a "mild" or "normal for your age" scan, the strongest evidence is for the mind-body approach. Scientists at the University of Colorado found 2 out of 3 people with about a decade of back pain, most presumably carrying reports like yours, were pain-free or close to it after four weeks, versus 1 in 10 with usual care. Results vary. The study, explained.
And if a years-old herniation is still getting the blame, that timeline doesn't work either.
FAQ
Can you have a bulging disc with no pain?
Yes, commonly. Among people with no back pain, 30% of those in their 20s, 60% in their 50s and 84% in their 80s have disc bulges. About two thirds of pain-free adults have some disc abnormality.
Is a bulging disc serious?
By itself, usually not. It's one of the most common findings on spine imaging and is considered part of normal aging. Seriousness comes from symptoms like a leg getting weaker, bladder or bowel changes or groin numbness, not from the finding alone. Those mean a doctor, now.
Should I get an MRI for back pain?
Follow your doctor's judgment. Imaging matters when warning signs are present. For routine back pain, guidelines discourage early scans, partly because normal findings so often get read as the cause and raise fear.
What percentage of people have disc degeneration?
Among people with no back pain: 37% at 20, 68% at 40, 88% at 60, 96% at 80. It rises with age in people who feel fine, which is why it can't automatically explain pain.
Can an MRI show what's causing my back pain?
It rules out the serious causes, which is invaluable. It generally can't prove a common finding is producing your pain, because the rates in pain-free people are too high for that.
Your MRI has a base rate. Your pain has a pattern. Take the free 2-minute quiz and see which pattern yours fits, or try Day 1 of the practice free and see what the approach feels like.
This article is education, not medical advice, diagnosis or treatment. See a doctor about your back pain and your imaging before acting on anything here, and get urgent care for warning signs: new bladder or bowel changes, numbness in the groin, a leg getting weaker, fever, unexplained weight loss, or a history of cancer or a serious fall. Reading your MRI belongs to your doctor and radiologist.
Sources: Brinjikji W et al., "Systematic Literature Review of Imaging Features of Spinal Degeneration in Asymptomatic Populations," AJNR, 2015. Jensen MC et al., NEJM, 1994. Ashar YK et al., JAMA Psychiatry, 2022.