Pain Down Your Leg? Here's How to Tell Sciatica From Piriformis Syndrome

Pain that starts deep in your buttock and shoots down the back of your leg. Maybe it's a burning ache. Maybe it's sharp and electric. Maybe your leg goes numb after sitting too long, or it flares up every time you run or squat.

Most people call this "sciatica" and leave it at that. But sciatica isn't actually a diagnosis — it's a description of symptoms. And two very different problems can produce those exact same symptoms: a nerve root issue in your lumbar spine, or a muscle in your hip called the piriformis compressing that same nerve further down the chain.

They can feel nearly identical. But they're not the same problem, and treating one like the other is one of the most common reasons people don't get better.

Sciatica Isn't a Diagnosis — It's a Symptom

The sciatic nerve is the largest and longest nerve in your body. It forms from nerve roots that exit your lumbar spine, runs beneath the piriformis muscle deep in your glutes, and travels all the way down the back of your leg.

"Sciatica" simply refers to pain along that pathway. It doesn't tell you why the nerve is irritated. That's the piece that actually determines how it should be treated — and it's the piece that gets skipped constantly.

There are two very different mechanisms that can produce sciatic-type symptoms:

True Lumbar Sciatica

This happens when a nerve root is compressed or irritated at the level of the spine — most often from a disc bulge or herniation, spinal stenosis, or degenerative changes affecting the space around the nerve root. The irritation originates in the low back, even though you feel it in the leg.

Piriformis Syndrome

This happens further down the chain. The piriformis is a small muscle deep in your glute that runs almost directly over the sciatic nerve. In a significant portion of the population, the sciatic nerve actually passes through or very close to the piriformis muscle itself. When that muscle becomes tight, overactive, or irritated, it can compress the nerve right where it passes underneath — producing symptoms that travel down the leg in a pattern nearly identical to lumbar sciatica.

The problem: your spine has nothing to do with piriformis syndrome. If you spend weeks getting your lumbar spine adjusted for what's actually a hip muscle problem, you may get some temporary relief, but the underlying irritation keeps coming right back.

How to Tell Them Apart

Neither condition can be diagnosed with 100% certainty from symptoms alone — a proper clinical evaluation matters. But there are some meaningful differences worth knowing.

Where the Pain Is Worst

Lumbar sciatica often includes low back pain alongside the leg symptoms, since the irritation originates at the spine. Piriformis syndrome tends to center more specifically in the buttock, sometimes with little to no low back pain at all — the deep ache is localized to the glute, with radiating symptoms down the leg from there.

What Makes It Worse

Lumbar sciatica is frequently aggravated by movements that load the spine — bending forward, coughing, sneezing, prolonged sitting with a rounded low back. Piriformis syndrome tends to flare with hip-dominant movements — sitting on a wallet or in a low chair for a while, climbing stairs, running, or any activity that involves hip external rotation.

The Nature of the Symptoms

Significant weakness, loss of reflexes, or progressive numbness are more suggestive of true nerve root compression at the spine — because the nerve root supplies specific muscles and reflexes that a piriformis-level irritation typically doesn't affect the same way. Piriformis syndrome tends to produce more of a deep, achy, burning discomfort in the buttock without the same degree of objective neurological findings.

Specific Clinical Tests

There are physical exam tests — like the FAIR test (flexion, adduction, internal rotation) and straight leg raise variations — that can help differentiate where the irritation is actually coming from. This is part of why a proper hands-on evaluation matters more than trying to self-diagnose from a symptom checklist online.

Why This Matters in the North Atlanta Active Adult Population

We see a lot of sciatic-type symptoms at MVMNT Rehab — and a disproportionate number of them turn out to be piriformis-related rather than true lumbar sciatica. This makes sense given who we treat: active adults who run, lift, cycle, and play racket sports.

Piriformis syndrome is closely tied to hip mechanics — glute weakness, restricted hip mobility, and prolonged sitting all contribute to an overworked, irritated piriformis. That combination — a desk-based lifestyle for part of the day and higher training loads the rest of the time — is extremely common in the patients we see across Alpharetta, Johns Creek, and Roswell.

What Actually Works: The MVMNT Rehab Approach

Because these two conditions have different underlying causes, treatment has to be tailored to what's actually driving the symptoms. Here's how we approach it.

Thorough Movement and Orthopedic Assessment

Before we treat anything, we determine whether your symptoms are more consistent with a spinal issue or a piriformis-driven issue. This includes orthopedic testing, movement assessment, and a review of what specifically triggers and relieves your symptoms.

For Piriformis-Driven Symptoms: Active Release Technique (ART)

ART is one of the most effective tools for piriformis syndrome specifically, because it works directly on the muscle that's compressing the nerve. By applying precise tension to the piriformis while you move your hip through range of motion, we release the restriction and reduce the compression on the sciatic nerve at its source — rather than treating the spine for a problem that isn't coming from the spine.

Hip Mobility and Glute Strengthening

Piriformis syndrome rarely happens in isolation. It's usually a compensation pattern — the piriformis working overtime because the glutes aren't stabilizing the hip properly, or because hip mobility is restricted and the piriformis is picking up the slack. We address both directly, because releasing the muscle without correcting why it's overworking sets you up for the same problem to return.

For Spine-Driven Symptoms: Joint Mobilization and Targeted Care

When symptoms are truly originating at the lumbar spine, we address the joint mechanics and mobility of the lumbar segments directly, combined with movement retraining to reduce the load patterns that are irritating the nerve root. If findings suggest more significant nerve root involvement, we'll refer for imaging or co-manage with the right specialist.

Nerve Mobility Work

Regardless of the source, a chronically irritated sciatic nerve can lose some of its normal gliding capacity within the surrounding tissue. We incorporate nerve mobilization techniques where appropriate to restore that motion and reduce sensitivity along the nerve's pathway.

When to Seek Immediate Medical Attention

Most sciatic-type symptoms respond well to conservative care. But there are red flags that require urgent evaluation rather than conservative treatment:

• Loss of bowel or bladder control

• Numbness in the groin or inner thighs (saddle anesthesia)

• Progressive or significant leg weakness

• Severe symptoms following trauma

These are rare, but important to know.

Signs It's Time to Get Assessed

• Leg pain that's been present for more than a couple of weeks

• Symptoms that are more centered in the buttock than the low back

• Pain that flares specifically with sitting, running, or climbing stairs

• You've had lumbar adjustments without meaningful improvement

• Numbness or tingling that travels down the back of your leg

Ready to Find Out What's Actually Going On?

If you've been dealing with radiating leg pain and you're not sure whether it's coming from your spine or your hip, we'd love to help you find out.

MVMNT Rehab is a performance rehabilitation clinic in Alpharetta, GA, specializing in active adults who want an accurate diagnosis and a treatment plan built around the actual cause — not just the symptoms. We work with patients across Alpharetta, Johns Creek, Roswell, and Milton.

Book a free discovery visit and let's figure out exactly what's driving your symptoms.

MVMNT Rehab is located inside 1858 Athletic Club at 3365 North Point Pkwy, Alpharetta, GA 30005. Call (404) 863-1876 or email info@mvmntrehab.com.