Piriformis syndrome is deep gluteal pain with sciatica-like symptoms. But the problem is in the buttock, not the spine.
What is piriformis syndrome?
The sciatic nerve passes under (and in some people through) the piriformis muscle deep in the buttock. When that muscle is tight or inflamed, it can squeeze the nerve.
It is often mistaken for sciatica from a disc. Then it gets treated with spinal injections that were never going to work.
What are the symptoms of piriformis syndrome?
- Deep buttock pain, worse sitting on a hard surface.
- Pain down the back of the thigh, often stopping above the knee.
- Tenderness deep in the buttock.
- Worse after driving or sitting a long time.
How is piriformis syndrome treated?
- An exam that tells it apart from true radicular sciatica.
- Image-guided piriformis injection.
- Physical therapy aimed at the deep hip rotators (the small muscles that turn the hip).
To be seen, call us or request an appointment.
What usually gets missed
It is over-diagnosed and under-diagnosed at the same time. It gets slapped on as a label for any buttock pain. Yet it gets missed as the real cause of sciatic symptoms in patients whose lower-back scans look normal.
Here is what sets it apart. The pain is centered in the buttock, not the back. Long sitting on a hard surface sets it off. It is tender deep in the buttock. And leg symptoms usually stop above the knee instead of reaching the foot.
How long does piriformis syndrome last?
It responds well to targeted stretching and strengthening of the deep hip rotators. You usually see results within weeks, not months.
Where exercise and stretching stall, an image-guided injection into the muscle both confirms the cause and treats it. Cases that hang on call for a second look for a missed source in the lower back, not more and more local treatment.
When this becomes urgent
Buttock pain with fever needs urgent assessment. Leg weakness that keeps getting worse, foot drop, or any bladder or bowel change is a spine question, not a piriformis one. It should be checked the same day.
Why it happens
The sciatic nerve passes under the piriformis muscle deep in the buttock. In a few people it passes through it. If that muscle spasms or grows too large, it can irritate the nerve. That causes buttock pain that travels down the leg. This kind of deep buttock pain is usually worse with long sitting and driving, and when the hip is turned.
How do you test for piriformis syndrome?
Testing is mostly about telling it apart from a lumbar nerve root problem (a pinched nerve in the lower back), which it closely copies. Some signs point here: pain that starts in the buttock, a tender spot there, and no back pain. So does pain brought on by turning the hip, not by moving the spine. A diagnostic injection into the muscle both tests and treats.
Where medication fits
Medicine is a bridge, not a destination. It makes life bearable until the source is found and treated. Its role should shrink as treatment works. We review everything you already take, including anything from other doctors. That is because the real risk sits in how drugs interact, not in any one drug.
Common questions
How is this different from sciatica?
Sciatica from a disc usually causes pain past the knee. It follows a specific nerve-root map. Piriformis pain is centered in the buttock and rarely reaches the foot.
This is set out in Sleeping With Sciatica or a Slipped Disc.
How is this different from sciatica from a disc?
A disc problem usually involves the back and follows a set nerve root pattern. Piriformis pain starts in the buttock. It is tender right there, and hip position sets it off.
There is more on this in Sciatica.
Does an injection cure it?
It often eases symptoms and confirms the source. Lasting relief usually means working on how the hip moves and how much you sit.
The mechanism is covered in Hip Pain.
What is deep gluteal syndrome?
Buttock pain that comes from the sciatic nerve being irritated deep in the buttock, not at the spine. The nerve runs under, and in some people through, the piriformis muscle. When that muscle is tight, in spasm or enlarged, it can press on the nerve. The pain sits in the buttock. It is worse sitting on a hard surface or driving, and usually stops above the knee.
What could be causing pain deep in my buttock?
A tight or inflamed piriformis muscle pressing on the sciatic nerve is one cause. It points here when the buttock is tender, the back does not hurt and turning the hip brings on the pain. A lumbar nerve root problem closely copies it, so the exam has to tell them apart. Buttock pain with fever needs urgent assessment. Leg weakness, foot drop or any bladder or bowel change should be seen the same day.
Sources
- Probst D et al. Piriformis Syndrome: A Narrative Review of the Anatomy, Diagnosis, and Treatment. PM & R : the journal of injury, function, and rehabilitation, 2019. PubMed 31102324
- Lo JK et al. Piriformis syndrome. Handbook of clinical neurology, 2024. PubMed 38697742
- Geler Külcü D. Deep Gluteal syndrome: An underestimated cause of posterior hip pain. Turkish journal of physical medicine and rehabilitation, 2024. PubMed 38549816
- Park JW et al. Deep gluteal syndrome as a cause of posterior hip pain and sciatica-like pain. The bone & joint journal, 2020. PubMed 32349600
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