Sciatica is not a diagnosis on its own. It is the name for pain, tingling or numbness that travels along the sciatic nerve, often from the low back down one leg. Piriformis syndrome is one possible cause, where a muscle deep in your buttock presses on that same nerve. So the real difference in piriformis syndrome versus sciatica is where the trouble starts: near the spine, or down in the buttock. Because the two can feel almost the same, a hands-on exam tells you more than a guess. The good news is that both often ease with time and simple care.
What sciatica and piriformis syndrome each mean
Your sciatic nerve is the largest nerve in your body. It starts in your lower back, passes through your buttock, and runs down the back of each leg. Cleveland Clinic describes sciatica as nerve pain from an injury or irritation to this nerve. You may feel burning or shooting pain, numbness or tingling. In many cases, the problem starts in the lower spine. For example, a herniated disc or a narrow spinal canal can press on a nerve root there.
The piriformis is a flat, narrow muscle deep in your buttock. It helps with almost every movement of your hips and legs. In most people, the sciatic nerve runs right underneath it. Piriformis syndrome happens when this muscle presses on the sciatic nerve. That pressure can cause pain or numbness in the buttock and down the back of the leg.
Here is where the words get confusing. Many providers use “sciatica” for any pain that follows this nerve. As a result, you may hear piriformis syndrome called a type of sciatica, or a condition that mimics it. In the end, the label matters less than the cause, since the cause shapes your care.
Piriformis syndrome versus sciatica: how the symptoms differ
The two overlap a lot, so no single symptom proves one or the other. Still, some patterns tend to lean one way, as this table shows:
| Sciatica from the spine | Piriformis syndrome | |
|---|---|---|
| Where it starts | Often the lower back | Mostly the buttock |
| Where you feel it | Down the leg, sometimes to the calf, foot or toes | The buttock, hip or upper leg, sometimes down the back of the leg |
| What may make it worse | Coughing, sneezing or bending | Long sitting, walking, running or stairs |
| Low back pain | Often part of the picture | Pain tends to center on one area of the buttock |
Both can cause burning or shooting pain, numbness and tingling. Sciatica usually affects one leg at a time. Piriformis syndrome can show up on one side or both. So treat this table as a guide, not a test you can run at home.
What causes each one
Sciatica starts when something squeezes or irritates the sciatic nerve or its roots in the low back. Common causes include a herniated disc, spinal stenosis and wear in the discs of the spine. Sometimes, providers cannot find a clear cause at all. If stenosis is behind your leg pain, our post on spinal stenosis exercises explains which moves to try and which to skip.
Piriformis syndrome, on the other hand, starts with the muscle itself. Cleveland Clinic lists these common triggers:
- Swelling in the piriformis or the tissue around it
- A fall, car accident or other injury to the hip, buttock or leg
- Overuse, such as long-distance running or other repeated motions
- Lifting the wrong way, or skipping a warm-up before exercise
- Tight muscles from too little activity
- Sitting for long periods, as many desk workers do
That last trigger matters for many people who work in the offices along Eisenhower Parkway and sit for hours at a time. If that sounds like you, our guide to back pain from sitting all day has simple desk changes to try. In a few people, the cause is anatomy present from birth, such as a sciatic nerve that takes an unusual path near the muscle.
How a provider tells piriformis syndrome versus sciatica apart
There is no single test for piriformis syndrome. Instead, a provider usually rules out other causes first. That takes a careful history and a hands-on exam. Expect questions about when the pain started, what makes it worse and what you do all day. Next, the provider moves, stretches and presses on your hip, buttock and leg to see what hurts and what does not.
For sciatica from the spine, the exam often includes watching you walk and checking your strength and flexibility. A common check is the straight leg raise. You lie on your back while the provider slowly lifts one leg and notes when symptoms start. Imaging such as an MRI is not usually the first step. Providers tend to order it for severe or worsening symptoms, or to rule out other problems.
What may help with piriformis syndrome versus sciatica
For many people, both problems ease with time and simple care. Piriformis symptoms often improve within days or weeks. Many cases of sciatica improve within four to six weeks. Both can come back, though, so the habits you build matter. Our post on how long sciatica lasts walks through typical timelines and warning signs.
Early self-care often looks alike for both:
- A short break from whatever flares the pain, then gentle movement
- Ice in the first few days, then heat if it feels better
- Over-the-counter anti-inflammatory medicine, if it is safe for you
- Regular breaks from sitting to stand, walk and stretch
- Light stretches for the hips, buttocks and backs of the legs
However, the right exercises can differ once you know the cause. For ideas to talk over with your provider, see our gentle sciatica stretches and the moves to skip. If simple care does not help, a medical doctor may suggest prescription medicine or injections. Doctors usually do not recommend surgery for piriformis syndrome unless other care fails. For sciatica that lasts or worsens, surgery is one option a medical doctor may discuss.
When to see a doctor or go to the ER
Most buttock and leg pain is not an emergency. Still, some signs need a medical doctor first, not a chiropractor. Go to the ER right away if you have:
- Loss of bladder or bowel control
- Numbness in the groin, buttocks or inner thighs
- A foot that drags, or trouble lifting the front of your foot
The first two can be signs of cauda equina syndrome, a nerve emergency. Also see a medical doctor soon if you have:
- Sudden or worsening leg weakness or numbness, or new trips and falls
- Sudden, severe pain in your back or leg
- Fever along with back pain
- A history of cancer, or weight loss you cannot explain
- Pain that started after a fall or other injury
- Night pain that wakes you up
- Symptoms that last more than a few weeks or keep getting worse
This post is educational and is not a diagnosis.
How we approach it at HealthSource of Roseland
At our Roseland office, Dr. Jenna Patel, D.C. evaluates you before any care starts. Your first visit begins with a health history questionnaire and a consultation. Then comes a physical exam of your posture, mobility and pain. We take X-rays only if clinically needed. After that, Dr. Patel explains a report of findings and a personalized care plan.
Her aim is to find the source of the problem, not only the symptoms. That matters here, because a piriformis problem and a disc problem can feel so alike. She has extra training in movement analysis, sports injury rehab and instrument-assisted soft tissue work.
Depending on your exam, your plan may include hands-on adjustments, soft tissue work and Progressive Rehab® and functional exercise. This kind of care may help, and she explains each part of the plan so you can decide with clear information. If your exam raises a concern that needs a medical doctor, we will tell you. You can learn more on our sciatica relief page.
If buttock or leg pain makes it hard to sit through a workday, sleep or walk, you do not have to sort it out alone. Book a visit online or call (973) 200-2424, and we will talk it through. We accept most major insurance plans, so call us to check yours. Ask about our new-patient visit: consultation, exam and X-rays if clinically needed. The offer is for new patients only. It does not apply to Medicare, Medicaid, other federal healthcare program patients or ACN members.
