The complaint is specific and common: a deep ache in the buttock that builds the longer you sit, eases when you stand and walk, and turns a long meeting, a flight, or a drive into something you dread. Most people assume it’s sciatica and start stretching. Sometimes that’s right. Often the pain is coming from a structure in the buttock itself, and which one decides the treatment. The single most useful move is to figure out where the pain actually sits.
Where it hurts tells you what it is
Two locations split the differential: the deep mid-buttock versus the sit bone.
Deep mid-buttock, often with leg symptoms — piriformis / deep gluteal syndrome. When the pain is deep in the center of the buttock and can send tingling or aching down the back of the leg, the likely source is the sciatic nerve being irritated in the deep gluteal space — classically by the piriformis muscle, but also by nearby muscles, fibrous bands, or the hamstring origin. “Deep gluteal syndrome” is the umbrella term for this group, because the same buttock pain has several possible generators in that one space [1][3]. Piriformis syndrome is the best-known of them. A 2024 review lists its most common symptoms as buttock pain, tenderness over the greater sciatic notch, and aggravation by sitting, and notes that some authors estimate it at 5-6% of low-back, buttock and leg pain, a figure that depends on the diagnostic criteria used [2]. The usual tell is deep, central buttock pain, often reproduced when the hip is flexed, drawn across the body, and rotated inward (the FAIR test). No exam sign has well-established accuracy, because there is no agreed case definition [2].
Right on the sit bone — proximal hamstring tendinopathy. If you can put a finger on exactly where it hurts and it’s the bony sit bone, especially in a runner, think proximal hamstring tendinopathy. The hamstring tendons attach at the ischial tuberosity, and the condition produces deep buttock pain right there, in athletes and non-athletes alike [6]. In one published case, a runner’s pain was worse running on slopes and with long sits on hard surfaces, particularly while driving [4]. It’s an overuse tendon problem, not a nerve problem. Our proximal hamstring tendinopathy page covers the exam, the loading program, and the injection evidence in depth.
Right on the sit bone, after lots of sitting — ischiogluteal bursitis. The same sit-bone location: the ischiogluteal bursa between the tuberosity and the gluteus maximus can become inflamed, and long sits on hard surfaces are the classic aggravator (the old name was “weaver’s bottom”). In a retrospective series of 64 patients, buttock pain was the most common first complaint and 92% were tender over the ischial tuberosity. About 80% settled with conservative care, 17% needed an injection, and 2 patients had surgery. Those with an inflammatory disease were much less likely to settle without further treatment [5].
What this is usually not: pain that clearly starts in the low back and shoots down the leg is more likely spinal sciatica, a different problem treated at the spine. And a band of pain across the upper buttock and iliac crest rather than deep or at the sit bone points instead to cluneal nerve entrapment.
Read the film's transcript
Pain in the buttock that shoots down the leg usually gets blamed on a slipped disc. Sometimes the culprit is a muscle.
Deep in the buttock sits the piriformis, a small hip-rotator. The sciatic nerve runs just beneath it — in some, right through.
When that muscle tightens or spasms, it can squeeze the sciatic nerve. It's one cause of what specialists call deep gluteal syndrome.
Nerve pain from here can feel a lot like a pinched nerve in the spine, and the back MRI may look normal, so the cause can be missed.
The studied options target the muscle, not the spine: stretching and physical therapy first, then image-guided injections if needed.
Leg weakness that keeps getting worse, or any new change in bladder or bowel control, is not a muscle problem. These need the nearest emergency room, or call 911.
Piriformis syndrome is real and diagnosable — telling it apart from the spine takes a specialist. Educational only, not medical advice.
How it’s diagnosed
After a quick screen for the things that aren’t a buttock problem — true radicular sciatica from the spine, and the rare red flags below — the diagnosis is clinical, supported when needed by the response to a targeted injection. The exam localizes the pain (deep mid-buttock versus the sit bone), runs provocative tests like the FAIR test for the piriformis, and presses the ischial tuberosity for hamstring and bursal sources [1][2]. Imaging has a supporting role: ultrasound can show piriformis thickening, a fluid-filled bursa, or hamstring tendon change, and MRI is used mainly to exclude spinal and hip causes — but no scan reliably confirms piriformis syndrome on its own [2]. An image-guided injection can add useful evidence: if numbing the suspected structure takes the familiar pain away, that structure becomes the likely source [3]. It is not a validated test, and relief from the numbing medicine does not guarantee that a steroid injection or other treatment will work [1].
Evidence-based treatment
Treatment is matched to the cause, which is exactly why pinning the cause down comes first.
Proximal hamstring tendinopathy — load it, don’t rest it. Management is a progressive hamstring-loading program (isometrics, then heavier slow loading, then energy-storage work). No randomized trial has tested a rehabilitation program for this tendon, and the approach borrows principles from Achilles and patellar tendinopathy [6]. In one published case, a runner’s pain fell from 7 to 1 out of 10 over a 12-week staged program [4]. Our physical therapy program is built around that kind of staged loading.
Piriformis and deep gluteal syndrome — targeted therapy, then a precise injection. First-line is focused physical therapy: hip external-rotator and lumbopelvic strengthening and piriformis-specific mobility [2]. When pain persists, an image-guided injection of local anesthetic with corticosteroid, or, case by case, off-label botulinum toxin for stubborn, recurrent cases, is an option. The evidence is limited, mostly reports of benefit rather than controlled trials [1][2]. At Modal Pain these are done under ultrasound as nerve blocks or muscle injections, and the piriformis syndrome page covers them in detail. Image guidance matters here, because the sciatic nerve runs right beside the target.
Ischiogluteal bursitis — modify, then inject if needed. Most cases settle with activity and seat changes (a cutout cushion, standing breaks, off hard surfaces). In the series above, about 1 in 6 patients needed an injection and a few needed surgery [5].
The common thread is mechanical relief while the specific cause is treated: a cutout cushion under the painful side, standing and walking for a couple of minutes every 30-45 minutes, and staying off hard seats.
When to see a specialist
See an interventional pain physician if buttock pain has lasted more than a few weeks, keeps returning after stretching or generic therapy, or is clearly worse the longer you sit. That pattern often means a specific structure in the buttock can be identified and treated. Bring what makes it better and worse and exactly where it hurts, because that localization does most of the diagnostic work. Two things override everything else. New leg weakness, numbness in the groin, or any change in bladder or bowel control is a spinal emergency: call 911 or go to the nearest emergency room. Constant pain at rest and at night, with unexplained weight loss or a history of cancer, needs prompt medical evaluation rather than a routine appointment.
Verify your insurance covers a buttock pain workup Book a same-week evaluation
Or call (646) 290-6660.
For the deep-buttock, sciatic-type pattern specifically, see the piriformis syndrome page.
References
This article is reviewed against the peer-reviewed literature. Citations retrieved from PubMed.
- Hu YE, Ho GWK, Tortland PD. Deep Gluteal Syndrome: A Pain in the Buttock. Current Sports Medicine Reports. 2021;20(6):279-285. doi:10.1249/JSR.0000000000000848 · PubMed
- Lo JK, Robinson LR. Piriformis syndrome. Handbook of Clinical Neurology. 2024;201:203-226. doi:10.1016/B978-0-323-90108-6.00002-8 · PubMed
- Hernando MF, Cerezal L, Pérez-Carro L, Abascal F, Canga A. Deep gluteal syndrome: anatomy, imaging, and management of sciatic nerve entrapments in the subgluteal space. Skeletal Radiology. 2015;44(7):919-34. doi:10.1007/s00256-015-2124-6 · PubMed
- Campos-Villegas C, Ortega-Pérez de Villar L, Gámez-Payá J, Alarcón-Jiménez J, de Bernardo N. Clinical Progression and Load Management For Proximal Hamstring Tendinopathy In A Long-Distance Runner: A Case Report. International Journal of Sports Physical Therapy. 2024;19(5):609-617. doi:10.26603/001c.116578 · PubMed
- Roh YH, Yoo SJ, Choi YH, Yang HC, Nam KW. Effects of Inflammatory Disease on Clinical Progression and Treatment of Ischiogluteal Bursitis: A Retrospective Observational Study. Malaysian Orthopaedic Journal. 2020;14(3):32-41. doi:10.5704/MOJ.2011.007 · PubMed
- Goom TS, Malliaras P, Reiman MP, Purdam CR. Proximal Hamstring Tendinopathy: Clinical Aspects of Assessment and Management. Journal of Orthopaedic and Sports Physical Therapy. 2016;46(6):483-93. doi:10.2519/jospt.2016.5986 · PubMed
Frequently Asked Questions
Most often one of three things, and where it hurts tells them apart. Deep in the middle of the buttock, sometimes with tingling down the leg, points to piriformis syndrome or the broader deep gluteal syndrome — irritation of the sciatic nerve in the deep gluteal space. Pain right on the sit bone (the ischial tuberosity you feel when you sit on a hard chair) points to either proximal hamstring tendinopathy, which often affects runners, or ischiogluteal bursitis. Sitting aggravates all of them because it presses on these structures. Spinal sciatica, pain that starts in the back and shoots down the leg, is a separate cause that needs a different treatment.
Because sitting puts direct, sustained pressure on exactly the structures involved. In piriformis and deep gluteal syndrome, sitting compresses the piriformis muscle against the sciatic nerve underneath it. In proximal hamstring tendinopathy and ischiogluteal bursitis, your body weight presses straight down on the ischial tuberosity where the hamstring tendon attaches and the bursa sits. Hard seats, long drives, and a wallet in the back pocket all make it worse. Standing up and walking usually eases it, and that pattern (worse sitting, better moving) is itself a useful clue to where the pain comes from.
No. Sciatica is a symptom — pain traveling along the sciatic nerve — and it has many causes. Buttock pain when sitting is frequently NOT spinal sciatica at all, but a local problem in the buttock: the piriformis or deep gluteal space, the hamstring origin, or the bursa. By some estimates piriformis syndrome accounts for 5-6% of low-back, buttock and leg pain, though the figure depends on which diagnostic criteria are used (Lo 2024). The practical difference: spinal sciatica radiates from the back down the leg and is treated at the spine, whereas these buttock causes are tender to direct pressure on the buttock and are treated locally.
Location and a focused exam do most of the work. Piriformis and deep gluteal pain is deep in the mid-buttock, often reproduced by the FAIR test (flexing, adducting and internally rotating the hip), and may send symptoms down the leg. Proximal hamstring tendinopathy is felt right on the sit bone, worse with running, lunging and long sits, and is tender exactly at the ischial tuberosity. Ischiogluteal bursitis sits in the same spot. Ultrasound and MRI mainly help rule other causes in or out. When doubt remains, an image-guided numbing injection into the suspected structure adds evidence, although no single test, scan or injection is validated for deep gluteal syndrome (Hu 2021).
It depends on the cause, which is the whole reason to identify it first. Proximal hamstring tendinopathy is managed with a progressive tendon-loading program rather than rest, although no randomized trial has tested one for this tendon (Goom 2016). Piriformis and deep gluteal syndrome start with targeted physical therapy, and when that is not enough, an image-guided injection of local anesthetic with corticosteroid, or, case by case, off-label botulinum toxin, is an option with limited evidence behind it (Lo 2024). Ischiogluteal bursitis usually settles with activity and seat changes, with an injection for cases that do not. For all of them, a cutout cushion, regular standing breaks and avoiding hard seats reduce the daily aggravation.
Use a firm seat with a cushion that has a cutout under the painful side, so your weight isn't pressing directly on the sore sit bone or deep buttock. Sit with both feet flat, hips slightly higher than the knees, weight even across both sit bones rather than leaned to one side, and a small lumbar support. Avoid crossing your legs, sitting on a wallet, and low soft couches or deep car seats that drop the pelvis into a painful position. Most importantly, stand and walk for a couple of minutes every half hour, because no posture takes the pressure off these structures completely.
Usually, if you have a commercial PPO plan. Modal Pain Management NYC accepts most commercial PPO plans, including Aetna, Anthem Blue Cross Blue Shield, Cigna, Empire Blue Cross Blue Shield, the Empire Plan, Oscar, Oxford, UMR and UnitedHealthcare, and does not accept Medicare, Medicaid, HMO plans, or workers' compensation. Injections often need prior authorization, which our office handles. We verify your benefits before the first visit at no charge. Check your plan or call (646) 290-6660.
