Piriformis Syndrome vs. Lumbar Disc Herniation: What’s Really Causing Your Sciatic Pain?

You feel it in your lower back. Or maybe deep in your glute. Then it travels down your leg.

Most people immediately say: “I have sciatica.”

But here’s the truth: sciatica is not a diagnosis. It’s a symptom.

Sciatica simply means irritation of the sciatic nerve. The real question is:

👉 What is irritating it?

Two of the most common causes are:

• Piriformis Syndrome

• Lumbar Disc Herniation

They can feel very similar. But they are very different problems — and they need different treatment approaches.

Let’s break this down clearly.

First: What Is Sciatic Nerve Pain?

The sciatic nerve is the largest nerve in your body. It starts in your lower spine, travels through your glutes, and runs down the back of each leg.

When it becomes irritated or compressed, you may feel:

• Sharp or shooting pain

• Burning sensation

• Tingling

• Numbness

• Leg weakness

• Pain that travels below the knee

Now let’s look at the two main causes.

What Is Piriformis Syndrome?

The piriformis is a small muscle deep in your glute. Its job is to help rotate your hip and stabilize your pelvis.

The sciatic nerve runs either underneath or through this muscle.

If the piriformis becomes tight, inflamed, or irritated, it can compress the sciatic nerve — causing pain that mimics a disc problem.

Common Causes of Piriformis Syndrome

• Prolonged sitting (very common in Toronto office workers)

• Long commutes on the TTC or GO Transit

• Driving frequently

• Weak glute muscles

• Poor pelvic mechanics

• Running or stair workouts

• Previous low back injury

Typical Symptoms

• Deep aching pain in one buttock

• Pain that worsens with sitting

• Pain when crossing legs

• Tenderness in the glute

• Sciatic pain that may go down the leg (often not below the calf)

A big clue: back pain is often minimal or absent.

The discomfort usually feels like it lives in the glute.

What Is a Lumbar Disc Herniation?

Between each vertebra in your spine is a disc. Think of it like a cushion with a soft center.

If the outer layer weakens, the inner portion can bulge or herniate outward. When this presses on a nerve root in the lower back, it can cause sciatic pain.

Common Causes of Lumbar Disc Herniation

• Repetitive bending and lifting

• Poor posture over time

• Heavy lifting with poor mechanics

• Sudden twisting movements

• Degeneration with age

• Prolonged sitting

Typical Symptoms

• Lower back pain

• Pain radiating down one leg

• Numbness or tingling below the knee

• Leg weakness

• Pain that worsens when bending forward

• Increased pain when coughing or sneezing

A big clue: back pain is usually present, especially early on.

The Key Differences

Here’s a simple side-by-side comparison:

Feature	Piriformis Syndrome	Lumbar Disc Herniation
Main pain location	Deep glute	Lower back + leg
Back pain present?	Rare	Common
Worse with sitting?	Yes	Sometimes
Worse bending forward?	Usually no	Often yes
Pain below knee?	Less common	Very common
Caused by disc issue?	No	Yes

The tricky part? Both can cause leg pain.

That’s why proper assessment matters.

How We Diagnose the Difference

At The Well Adjusted Chiropractic Centre in downtown Toronto, we don’t guess.

We test.

1. Detailed History

We ask:

• When did it start?

• Was there a lifting injury?

• Does sitting make it worse?

• Does bending forward increase pain?

• Any numbness in the foot?

Patterns tell a story.

2. Orthopedic Testing

For disc herniation:

• Straight leg raise test

• Slump test

• Reflex testing

• Strength testing

• Sensory mapping

For piriformis syndrome:

• FAIR test (Flexion, Adduction, Internal Rotation)

• Palpation of the piriformis muscle

• Glute activation testing

• Hip mobility evaluation

  
  

3. Imaging

If neurological deficits are present, imaging may be recommended to fruther evaluate the root cause.

Can You Have Both?

Yes.

Sometimes a disc issue changes movement patterns. This overloads the piriformis muscle, causing secondary compression.

This is why treating only the symptom area often fails.

The spine, pelvis, and hips must be evaluated together.

How Chiropractic Care Helps Lumbar Disc Herniation

When disc involvement is present, treatment focuses on:

1. Reducing Nerve Pressure

Specific spinal adjustments improve joint motion and reduce mechanical stress on the nerve root.

2. Improving Disc Mechanics

Movement improves nutrient exchange within discs.

3. Decreasing Inflammation

Controlled spinal motion reduces inflammatory buildup around the nerve.

4. Core Stabilization

Strengthening deep stabilizing muscles protects the spine long term.

5. Postural Correction

Desk posture plays a major role in disc stress.

The goal is to reduce nerve irritation safely and naturally.

How Chiropractic Care Helps Piriformis Syndrome

When the piriformis is the primary issue, the strategy changes.

1. Pelvic and Hip Adjustments

Restoring motion in the sacroiliac joints reduces glute overload.

2. Soft Tissue Therapy

Targeted work to release piriformis tension.

3. Glute Strengthening

Weak gluteus medius muscles often force the piriformis to overwork.

4. Movement Retraining

Correcting sitting posture and hip mechanics.

5. Stretching Protocols

Specific stretches help reduce muscle compression on the sciatic nerve.

The goal is to remove muscular compression and restore balance.

Why Self-Diagnosing Can Delay Recovery

Many patients Google “sciatica exercises” and try random stretches.

But stretching a disc injury incorrectly can worsen symptoms. Ignoring a tight piriformis can prolong pain for months.

The solution depends on the source.

When Should You Get Checked?

If you are experiencing:

• Leg pain lasting more than 1–2 days

• Numbness or tingling

• Weakness in the leg

• Pain that interrupts sleep

• Difficulty sitting or standing comfortably

It’s time for a proper evaluation.

The earlier nerve irritation is addressed, the faster recovery typically is.

Piriformis syndrome and lumbar disc herniation both cause sciatic pain — but they are not the same condition.

One starts in a small muscle deep in the glute. The other starts in the spine itself.

The symptoms overlap. The treatments differ.

Getting the diagnosis right is the first step toward real relief.

At The Well Adjusted Chiropractic Centre in downtown Toronto, we perform detailed assessments to determine exactly what’s causing your sciatic nerve pain. From there, we create a targeted, personalized care plan to help you move confidently again.

If you’re tired of guessing what’s wrong, let’s find the real answer.

Give us a call at 416-504-8880 to get started today!