A Herniated Disc Is Not the End of the World: Understanding What Your MRI Means

You are told you have a herniated disc. What would you like to do?

“My MRI shows a herniated disc.”

I hear this frequently in clinical practice.

But an MRI finding raises another question:

Is the disc actually causing the symptoms?

An MRI can show a disc bulge or herniation, but it cannot determine by itself whether that finding is responsible for someone's pain.

A Herniated Disc Does Not Always Cause Pain

Disc bulging, degeneration, and herniation are common findings, even in people without symptoms.

So an MRI report that says:

Disc herniation.

does not automatically mean:

This is the reason your back hurts.

The finding becomes more meaningful when it matches the patient's symptoms and physical examination.

Is the Nerve Being Affected?

A lumbar disc herniation can become symptomatic when it irritates or compresses a nearby nerve root.

Symptoms may travel from the lower back into the buttock, thigh, calf, or foot and may include:

• Shooting or burning pain
• Tingling
• Numbness
• Muscle weakness

The pattern matters.

But pain is only part of the story.

Neurological function may be more important than pain intensity alone.

Why Weakness Matters

Weakness can be easier to overlook than pain.

Patients may describe:

My leg feels heavy. 

I keep catching my toe.

My foot doesn't work normally.

 These symptoms deserve attention.

A neurological examination may include testing strength, sensation, reflexes, and gait.

Two patients can have similar MRI findings but very different clinical situations.

One may have severe pain with normal neurological function.

Another may have less pain but measurable weakness.

Those are not the same problem.

Sciatica Is Not the Same as a Herniated Disc

Sciatica describes a pattern of pain involving the sciatic nerve or its contributing nerve roots.

A herniated disc can cause sciatica, but it is not the only possible cause.

Likewise, someone can have a herniated disc without having sciatica.

So “I have sciatica” describes a symptom pattern—not necessarily its cause.

MRI Shows Anatomy. Examination Shows Function.

An MRI can show:

• Disc degeneration
• Bulging or herniation
• Narrowing around neural structures
• Other structural changes

An examination helps evaluate:

• Strength
• Sensation
• Reflexes
• Gait
• Movement and function

This is why the size of a disc herniation is not always the most important question.

Where is it, and what is it doing?

When Should Symptoms Be Evaluated Promptly?

Most cases of low back pain and sciatica are not emergencies.

However, new or worsening neurological symptoms require prompt medical evaluation, particularly:

• Progressive weakness
• Significant difficulty walking
• New bladder or bowel dysfunction
• Numbness around the groin or saddle region
• Rapidly progressing neurological changes
• Severe symptoms after major trauma

These can be warning signs of serious neurological compromise, including cauda equina syndrome.

Does a Herniated Disc Always Need Surgery?

No.

A herniated disc on MRI does not automatically mean surgery is necessary.

Many patients improve with conservative care, depending on their symptoms and neurological findings.

Treatment may include activity modification, therapeutic exercise, physical therapy, medication when appropriate, or other non-surgical approaches. Some patients may require injections or specialist evaluation.

The goal is not to avoid surgery at all costs.
It is to use the right level of care for the right patient.

Where Chiropractic Care May Fit

For an appropriate patient, chiropractic care may address the mechanical and functional components associated with low back pain.

Depending on the examination, treatment may focus on:

• Improving restricted joint motion
• Modifying painful movement patterns
• Improving mobility
• Gradually returning to normal activity

The goal is not to “put the disc back.”

It is to address the patient's symptoms, physical findings, and functional limitations.

When significant or progressive neurological deficits are present, medical or specialist evaluation may be more appropriate than routine manual treatment.

Treatment Should Follow the Response

Two patients with similar MRI findings may respond very differently.

That is why I pay attention to how symptoms change over time.

If leg symptoms become less intense or move back toward the lower back, that may be a favorable change.

If pain travels farther down the leg or new numbness or weakness develops, the patient should be reassessed.

As symptoms improve, treatment can progress from reducing irritation toward restoring mobility, strength, and tolerance to normal activity.

The diagnosis provides the starting point.
The patient's response guides the next step.

The Bottom Line

A herniated disc is an anatomical finding.

Back pain is a symptom.

Nerve dysfunction is a different clinical problem.

They can occur all together—but they are not the same thing.

So instead of asking only:

Do you have a herniated disc?

I am more interested in asking:

Is the disc affecting the nervous system?

Because the most important finding may not be how the disc looks on an MRI.

It may be whether the patient can feel, move, and control the leg normally.

The MRI shows the structure.
The symptoms tell the story.
The neurological examination helps connect the two.

Medical Disclaimer:

The information provided on this blog is for educational and informational purposes only and should not be construed as professional medical advice, diagnosis, or treatment. Reading this content does not establish a doctor-patient relationship between you and Rapha Chiropractic & Acupuncture, PLLC. Always seek the advice of your physician or other qualified health provider with any questions you may have regarding a medical condition. Never disregard professional medical advice or delay in seeking it because of something you have read on this blog.