Sciatica or Piriformis Syndrome? How to Tell the Difference (and Why It Matters)

You've got pain shooting down the back of your leg, and you Googled it, and Google said sciatica. But here's the thing — about half the people who walk into my office convinced they have sciatica actually have piriformis syndrome. Different problem. Different fix. And getting it wrong means you spend months chasing the wrong treatment while the actual issue just sits there, tightening.

After 12+ years on the table, I've lost count of how many clients have come in with an MRI showing a "bulging disc" and a diagnosis of sciatica — only for the pain to disappear completely once we got into the piriformis. That doesn't mean sciatica isn't real. It absolutely is. But the label gets slapped on a lot of buttock-and-leg pain that has nothing to do with a disc.

Let's sort this out.

What's Actually Going On Back There

The sciatic nerve is a highway

Your sciatic nerve is the thickest nerve in your body — roughly the diameter of your thumb at its widest. It exits your lower spine, runs through your pelvis, passes under (or sometimes through) a muscle called the piriformis, and then travels down the back of your leg all the way to your foot.

When that nerve gets compressed or irritated, you get pain. Sometimes a lot of it. The question is where the compression is happening.

True sciatica: the disc problem

Classic sciatica comes from the spine — usually a herniated or bulging disc at L4-L5 or L5-S1 pressing on the nerve root. You'll typically feel:

• Pain that starts in the low back and radiates down one leg
• Numbness or tingling in the foot or toes
• Weakness — your foot might slap when you walk, or your calf might feel unreliable
• Pain that gets worse with sitting, bending forward, or coughing/sneezing

The hallmark is that the pain follows a specific nerve path — often the back of the thigh, outside of the calf, and into specific toes.

Piriformis syndrome: the muscle problem

The piriformis is a small, deep muscle in your buttock that runs from your sacrum to the top of your femur. Its job is to externally rotate your hip — think turning your knee outward. The sciatic nerve runs right underneath it. In about 15-20% of people, the nerve actually pierces through the piriformis muscle.

When that muscle gets tight, inflamed, or spasmed, it clamps down on the sciatic nerve like a garden hose under a car tire. You get:

• Pain deep in the buttock — often described as a "deep ache" that's hard to point to exactly
• Pain that radiates down the back of the leg — but usually stops at or above the knee
• Pain that gets worse with sitting on hard surfaces, crossing your legs, or climbing stairs
• No low back pain (or very little) — the pain is centered in the glute
• Pain that eases with walking — the movement loosens the piriformis temporarily

The key difference: piriformis syndrome starts in the butt. True sciatica starts in the back. That distinction matters more than any MRI.

The Figure-4 Test You Can Do Right Now

This isn't a medical diagnosis — it's a directional clue. Here's how:

1. Lie on your back with both knees bent, feet flat on the floor
2. Cross your affected leg so the ankle rests on the opposite knee (making a figure-4 shape)
3. Grab behind the bottom knee and pull it gently toward your chest
4. Pay attention to where you feel the stretch or pain

If you feel a deep stretch or sharp pain in the buttock of the crossed leg, piriformis syndrome is likely in the picture.

If the position itself doesn't reproduce the pain, but bending forward or sitting on the edge of the bed and straightening the affected leg does, true sciatica is more likely.

This isn't a substitute for professional assessment. But it gives you a better starting point than "my leg hurts, must be sciatica."

Why This Gets Misdiagnosed So Often

1. MRIs find things that aren't necessarily the problem

Here's something most people don't hear: a huge percentage of adults have disc bulges on MRI with zero symptoms. Studies have shown that nearly 50% of adults over 40 have at least one bulging disc and feel nothing. So when a doctor sees a bulge on your scan and you're complaining of leg pain, it's easy to connect dots that don't actually connect.

The bulge might be there. It might have been there for years. And the thing actually causing your pain might be a ticked-off piriformis muscle that nobody palpated because the MRI looked interesting enough to stop looking.

2. Nobody touched the piriformis

This is the one that frustrates me. Piriformis syndrome is a clinical diagnosis — meaning you find it by pressing on the muscle, testing range of motion, and reproducing the pain with specific positions. It doesn't show up on imaging.

If nobody put hands on your glute and pushed into that muscle to see if it reproduced your symptoms, piriformis syndrome was never actually ruled out. It was just skipped.

3. Chiropractors and PTs can both be half-right

I'm not here to bash anyone's profession. Chiropractic adjustments can help with true sciatica by taking pressure off a nerve root. PT can strengthen the stabilizers around the spine. Both are legitimate tools.

But if the problem is a hypertonic piriformis clamping down on the nerve in the pelvis — not a disc compressing the nerve at the spine — then spinal adjustments won't fix it. They might give temporary relief because the adjustment moves things around enough to briefly ease pressure, but the piriformis tightens right back up.

Your chiropractor isn't wrong to check the spine. They're wrong to stop there.

What Actually Helps — For Each One

If it's piriformis syndrome

This is where massage shines. The piriformis responds extremely well to:

• Targeted deep tissue or neuromuscular work directly on the piriformis and the surrounding hip rotators (obturator internus, gemelli, quadratus femoris — the deep six)
• Glute med and glute max release — the piriformis often picks up slack for lazy glutes
• Figure-4 stretching (the same test position, held for 60-90 seconds, 2-3 times daily)
• Tennis ball or lacrosse ball release — sit on it, find the knot, breathe into it for 60 seconds
• Fixing the pattern — usually it's too much sitting, driving with one foot on the gas, or a weak glute med that's making the piriformis work overtime

Most clients I see here in Union with piriformis syndrome improve significantly in 2-3 sessions with consistent stretching between visits. It's one of the most satisfying things to treat because the turnaround is fast when you're working the right muscle.

If it's true sciatica (disc-related)

Massage still helps — but it's not the primary intervention. What I'd recommend:

• Get imaging if you haven't — you need to know what you're dealing with
• See a PT or orthopedist for the disc management piece
• Use massage as a complement — we can release all the muscles that are guarding and spasming around the problem (erectors, QL, glute med, hamstrings), which reduces pain and lets the PT exercises work better
• McKenzie extensions (if your PT or doc recommends them) — these can centralize disc-related pain
• Avoid prolonged sitting and forward bending during the acute phase

The muscles around the spine go into lockdown when there's disc irritation. That lockdown creates its own pain. Releasing the muscular component doesn't fix the disc, but it takes a significant chunk of the pain away.

When it's both

Sometimes it's a disc and a tight piriformis. The disc irritation makes the piriformis spasm protectively, and now you've got two compression points on the same nerve. This is more common than pure piriformis syndrome, and it's why some people get partial relief from chiropractic but never fully resolve — they're fixing one compression point and ignoring the other.

If this is your situation, you need both addressed. Get the spine managed by whoever you trust (PT, chiro, ortho) and get the piriformis released by someone who knows how to get into it.

Red Flags — When to Skip the Massage and Go to the Doctor

I want to be clear about when leg pain needs medical attention, not bodywork:

• Loss of bladder or bowel control — this is a medical emergency (cauda equina syndrome). Go to the ER.
• Progressive weakness in the leg or foot — especially foot drop
• Pain after a significant trauma (fall, car accident, direct hit)
• Pain that doesn't change with any position and wakes you from sleep every night
• Numbness in the groin or saddle area

These aren't massage situations. These are doctor situations. Get checked first.

How to Stop This From Coming Back

Whether it's piriformis syndrome or managed sciatica, the prevention game is the same:

• Strengthen your glutes — particularly glute med. Clamshells, banded lateral walks, single-leg bridges. A strong glute med takes workload off the piriformis.
• Stop sitting on your wallet — I'm serious. Especially you, guys commuting from Washington or Sullivan to the job site. That uneven pelvis creates the exact asymmetry that pisses off the piriformis.
• Move every 45 minutes when you're desk-bound or driving long hauls
• Stretch the hip rotators daily — the figure-4 stretch, pigeon pose, or a seated cross-leg pull. Ninety seconds each side. Every day. No exceptions if you've had this before.
• Get on a maintenance schedule — once a month keeps the tissue from quietly building back to the point of nerve compression

Frequently Asked Questions

Can piriformis syndrome turn into sciatica?

They're separate conditions with different root causes, but a chronically tight piriformis can irritate the sciatic nerve severely enough to mimic true sciatica symptoms. Getting the piriformis released — usually through targeted massage and stretching — resolves it before any disc involvement happens.

Should I see a chiropractor or massage therapist for sciatica?

Depends entirely on the cause. True disc-related sciatica often needs imaging and may benefit from chiropractic care or physical therapy. If the issue is piriformis syndrome compressing the nerve in the pelvis — not a disc compressing it at the spine — targeted massage and stretching tend to resolve it faster than spinal adjustments alone.

How long does piriformis syndrome take to go away?

With consistent work — targeted massage, daily stretching, and correcting the movement pattern or posture that caused it — most people see significant relief within 2-4 weeks. Left alone or treated as "sciatica" without addressing the muscle, it can hang around for months and keep flaring every time you sit too long or drive too far.