What Is Piriformis Syndrome, and Why Does It Feel Like Sciatica?. Piriformis syndrome explained: deep buttock pain, why it mimics sciatica, sitting triggers, stretches, red flags, and how treatment options compare.
Piriformis syndrome is buttock pain caused when the piriformis muscle, deep in the hip, irritates the nearby sciatic nerve. It can send pain, tingling or numbness down the back of the leg, which is why it feels like sciatica. Unlike disc-related sciatica, pain is usually centred in the buttock and worse with long sitting, while back pain is often minimal. Most cases improve with stretching, hip strengthening and changing sitting habits within weeks.
Deep pain in one buttock that gets worse after an hour in a chair, and sometimes travels down the leg, is a common reason people search for piriformis syndrome. It is often mistaken for sciatica from the spine, and the two can feel very similar.
This guide explains what piriformis syndrome is, how it differs from disc-related sciatica, and what helps.
The piriformis is a small muscle deep in the buttock that helps rotate the hip outward. The sciatic nerve runs just beneath it, and in some people through it. When the muscle tightens, spasms or swells, it can press on or irritate the nerve.
Common triggers include:
Both affect the same nerve, but the source is different. Telling them apart guides treatment.
| Feature | Piriformis syndrome | Disc-related sciatica | |---|---|---| | Main pain location | Buttock | Lower back and leg | | Back pain | Often minimal | Common | | Worse with | Sitting, hip rotation | Bending, coughing, sneezing | | Pain below the knee | Less common | Common | | Imaging | Spine usually normal | Disc problem often visible |
Spinal sciatica is covered in sciatica nerve pain causes, symptoms and treatment. The sacroiliac joint is another nearby source of buttock pain, see sacroiliac joint pain.
Some buttock and leg symptoms need same-day medical attention:
These can signal nerve compression in the spine, which piriformis syndrome does not cause.
Most people improve by easing pressure on the muscle and building hip strength.
| Option | What it does | Best suited to | Limits | |---|---|---|---| | Stretching and strengthening | Relaxes and supports the hip | Most cases first | Needs weeks of practice | | Physiotherapy | Guided rehab and soft tissue work | Persistent or recurring pain | Time commitment | | Medication | Eases pain and spasm | Short-term relief | Not suitable for everyone | | Steroid or anaesthetic injection | Calms the muscle around the nerve | Stubborn cases | Relief may be temporary | | Botulinum toxin injection | Relaxes the muscle for months | Selected resistant cases | Off-label, evidence limited | | Cell-based therapy | Investigational, not established for this condition | Research discussion only | Benefit and long-term safety uncertain | | Surgery | Releases the muscle | Rare, after all else fails | Surgical risk |
Piriformis syndrome is mainly a muscle and nerve irritation problem that usually responds to rehabilitation. Regenerative approaches such as cellular therapy are being studied in some chronic joint and nerve conditions, but there is no established evidence for piriformis syndrome itself.
When buttock pain persists, the priority is confirming the true source, whether piriformis, spine, sacroiliac joint or hip, before considering any advanced option.
Piriformis syndrome is deep buttock pain from a tight or irritated hip muscle pressing on the sciatic nerve, so it can feel like sciatica but is usually centred in the buttock and worse with long sitting. Regular sitting breaks, heat, stretching and hip strengthening help most people within weeks to months, and groin numbness, bladder or bowel changes or leg weakness need urgent medical care.
This article is for general informational and educational purposes only and is not a substitute for personalized medical advice. Always consult a qualified healthcare professional before considering stem cell therapy.