Deep gluteal syndrome (DGS) is pain deep in the buttock, sometimes spreading down the back of the thigh, caused by the sciatic nerve being squeezed or irritated as it passes through the muscles and tissues of the buttock rather than at the spine. It often feels exactly like sciatica, it is usually worse when you sit, and in most people it settles with sensible conservative care. This guide explains how to recognise it, what else it can be, and what treatment the evidence supports.
TL;DR
- DGS is a non-disc cause of sciatic nerve irritation in the buttock. Piriformis syndrome is one possible cause, not a synonym.
- Typical signs: deep buttock ache, pain or tingling down the back of the thigh, and flare-ups from sitting, driving or low chairs.
- It is a diagnosis of exclusion: the lower back, hip joint and hamstring attachment need to be ruled out first.
- First-line care is education, activity changes and structured exercise. Injections and surgery are reserved for cases that do not respond.
- Numbness around the genitals or saddle area, or new bladder or bowel changes, needs urgent medical help, not a booked appointment.
Table of Contents
- What deep gluteal syndrome actually is
- Symptoms to look for
- What else it can be
- Why it happens
- How it is diagnosed
- What helps: the evidence-based route
- Our perspective
- When to get help quickly
- Getting your buttock and leg pain assessed in Essex
- FAQ
- Sources
What deep gluteal syndrome actually is
The sciatic nerve starts in the lower spine and runs through the buttock into the back of the leg. On the way it passes through a tight space beneath the gluteal muscles, past the piriformis muscle, the small rotator muscles of the hip and the hamstring attachment. The Royal National Orthopaedic Hospital explains that the nerve can be irritated or compressed as it runs through the muscles and soft tissues of the buttock, and that this is what the term deep gluteal syndrome describes.
The name is an umbrella. Authors of recent reviews describe how the label brought together piriformis syndrome, ischiofemoral impingement and hamstring-related problems, which encourages clinicians to look at the whole deep gluteal space rather than blame one muscle. If you have been told you have “piriformis syndrome”, you may well have DGS, but the reverse is not always true.
It is also easy to miss. A paper in the British Journal of General Practice calls it an overlooked cause of sciatica and reports that between 6% and 17% of people seen with sciatica in secondary care meet the criteria for DGS. Many of them are first treated as a slipped disc and only get a different answer when the back scan looks normal.
Symptoms to look for
DGS rarely announces itself with a dramatic injury. The pattern most people describe is:
- A deep, dull or burning ache in one buttock, often felt “in the middle of the cheek” rather than at the belt line.
- Pain, tingling or a pulling sensation that runs into the back of the thigh and sometimes below the knee.
- Symptoms that build the longer you sit, especially in a low car seat, on a hard chair or on a long commute.
- Relief on standing or walking short distances, although some people find long strides aggravate it.
- Discomfort with movements that bring the knee towards the chest or turn the thigh inwards, such as crossing your legs.
The research behind these features notes that symptoms are aggravated by sitting, particularly in low chairs or while driving, and by strong hip flexion or internal rotation. If your pain is mainly in the lower back, behind the knee, or in one outer thigh with numbness, a different problem may be responsible (more on that below).
Pain in the left or right buttock only
DGS is usually one-sided, and the side does not matter in itself. Pain on one side that is deep, worse with sitting, and not linked to a clear strain is a reason to get it examined. Pain in both buttocks at once, or pain with fever, unexplained weight loss or a recent fall, points elsewhere and should be checked by a GP.
What else it can be
Because DGS is a diagnosis of exclusion, a good assessment starts by ruling other things out. A review of buttock and posterior thigh pain stresses that lumbar spine problems such as disc herniation, hip joint problems such as femoroacetabular impingement, and pain from inside the pelvis or abdomen need to be excluded before DGS is confirmed.
The usual look-alikes are:
| Condition | Where it hurts | What tends to make it worse |
|---|---|---|
| Deep gluteal syndrome | Deep in the buttock, sometimes down the back of the thigh | Sitting, especially low or hard seats; hip flexion and inward rotation |
| Lumbar radiculopathy (nerve root irritation at the spine) | Lower back, buttock and leg, often below the knee | Bending, coughing, sneezing, some back positions |
| Proximal hamstring tendinopathy | Low in the buttock at the sit bone | Sprinting, hip extension, sitting on hard surfaces |
| Ischiofemoral impingement | Deep buttock and groin area | Long-stride walking |
| Hip joint problems | Groin, outer hip, sometimes buttock | Twisting, deep squatting, getting out of a car |
The differences between the first, third and fourth rows are set out in the research summary on differential diagnosis of buttock pain, which also lists the seated piriformis stretch test as a clinical test for DGS. If your leg symptoms start in the back, our guide to lumbar radiculopathy symptoms shows the four clues that point to a spinal source. If the pain sits right at the base of the spine when you sit, tailbone pain when sitting may be closer to what you feel. And weak, flat or “asleep” gluteal muscles produce their own set of symptoms, covered in our piece on dead butt syndrome.
Numbness over the outer thigh without much pain is another separate condition, described in our article on meralgia paraesthetica symptoms.
Why it happens
There is rarely a single cause. The nerve can be pinched by a tight or overworked piriformis or other deep hip rotator, by fibrous bands in the deep gluteal space, by a hamstring attachment that is thickened or inflamed, or by the way the hip and pelvis move. Recent surgical work identifies fibrovascular bands as a relevant cause of nerve entrapment in some people, although most readers will never need to know that, because most cases do not go to surgery.
Practical contributors we see discussed repeatedly:
- Long periods of sitting, especially with the knees higher than the hips.
- Running, cycling or gym work that loads the hip rotators without enough variety.
- A sudden jump in training or a new job that involves driving for hours.
- A stiff lower back or pelvis, which makes the hip muscles work harder to compensate.
- Direct pressure from something in a back pocket.
How it is diagnosed
Most of the time, it is diagnosed by listening and examining, not by a scan. The RNOH says that your doctor or physiotherapist will usually diagnose it from your symptoms and examination tests, with MRI used for extra information but not always necessary.
A good assessment will normally include:
- A detailed history: when the pain began, what position triggers it, and what you have already tried.
- A check of the lower back, including movement and neurological tests of strength, reflexes and sensation in the leg.
- Hip examination for joint-related causes.
- Provocation tests for the deep gluteal region, such as the seated piriformis stretch.
- Palpation of the sit bone and hamstring attachment.
The BJGP authors argue that clinicians should suspect DGS when sciatica-like symptoms persist despite negative lumbar spine imaging. If you have had a clear back scan and still have leg symptoms, say so at your appointment.
What helps: the evidence-based route
Education and activity changes
The RNOH describes first-line management as education, exercise and modification of activities. In practice, that means learning which positions irritate the nerve and then changing them without stopping life.
Small changes that matter:
- Raise your seat so the hips sit higher than the knees, or add a firm cushion in low-slung cars.
- Break up sitting every 20 to 30 minutes with a short walk or a stand.
- Take your wallet and phone out of your back pockets before you sit. The RNOH specifically lists pressure from objects in a back pocket among the things to avoid.
- Avoid crossing the affected leg over the other for long stretches.
- Keep walking within the limit that your symptoms allow, and use a stick temporarily if a clinician suggests it.
If you are redesigning your day around the pain, a general read on how to reduce symptom aggravation during everyday activities from a Pilates studio gives useful ideas on pacing and gentle movement, although it is written about a different spinal condition, so use it for the principles and not as a diagnosis.
Exercise and manual therapy
Structured exercise is standard care, and the RNOH adds that hands-on techniques can temporarily reduce muscle tension in the buttock but should be combined with an exercise programme, not used alone. Be realistic about the evidence too: the BJGP authors note that evidence for specific physiotherapy protocols is limited by a lack of large controlled trials, yet referral to structured rehabilitation remains standard practice.
How long does it take?
The encouraging news is that most people improve without invasive treatment. Reviewers from sports medicine and orthopaedics point to studies in which nearly 98% of suspected piriformis syndrome cases resolved with simple conservative measures in around 35 days. Treat that as a best-case figure from selected patients, not a promise: if you have no improvement after several weeks of well-directed care, the diagnosis deserves another look.
Injections and surgery
Injections can help diagnosis and give a window of relief, but the same review says their long-term effect is often modest or temporary, so they work best as a way to engage more effectively with rehabilitation. Surgery is for people who have had a prolonged, properly delivered course of conservative care that has not worked, or who have a confirmed space-occupying lesion. A 2025 systematic review of endoscopic sciatic nerve release reports successful outcomes in selected patients, with a 2.5% recurrence rate and a 1.6% revision rate, but those were carefully chosen cases, which is why a specialist orthopaedic opinion comes first.
Our perspective
At Elaris we see a lot of people who arrive saying “it’s sciatica”, and many of them are right to some degree: the nerve is the problem, but the place where it is being irritated is not always the spine. That is why the first appointment matters more than any technique that follows it.
We look at the whole picture. That means the lower back and pelvis, the hip, the way you sit and move, and the neurological signs in the leg. We also ask about stress, sleep and the shape of your working day, because tension and posture habits feed the same pain loops. We would rather spend the time to be sure of the source than guess and treat the wrong area for six weeks.
We are also clear about limits. If your examination points to a deep gluteal cause that needs imaging, injection or an orthopaedic opinion, we say so and explain why. If the findings suggest a spinal source, the plan changes. And if a red flag appears, we send you to your GP or urgent care the same day.
One thing we tell almost everyone: you can do more for this on your own than you think. Change the seat, move more often, empty the back pockets. Then come in so we can find out what is driving it.
— steve
When to get help quickly
DGS itself is not an emergency, but buttock and leg pain can occasionally signal something that is. Seek urgent medical help through NHS 111, A&E or 999 if you have:
- numbness or tingling in the groin, genitals or around the back passage,
- new difficulty passing urine or controlling your bowels,
- leg weakness that is getting worse, or a foot that is dropping,
- severe pain after a fall or accident, or pain with fever or unexplained weight loss.
See your GP if the pain has lasted more than a few weeks, is waking you at night, or is not improving despite the changes above.
Getting your buttock and leg pain assessed in Essex
If you live around Maldon, Tiptree, Witham or the villages nearby, we can examine the back, hip and buttock together and explain what we find. Your first consultation and examination costs £105. It includes a hands-on exam and neurological testing, and you leave with a written treatment plan so you know what we think is going on and what happens next.
If your leg symptoms feel like sciatica, our sciatica and leg pain page explains how we approach it. If your back is also involved, see low back pain care. You will see the same two practitioners at each visit, and progress is measured as we go. More articles are on our blog.
FAQ
Is deep gluteal syndrome the same as piriformis syndrome?
No. Piriformis syndrome is one possible cause of DGS, which is the wider umbrella term. The deep gluteal space also contains other muscles and bands that can press on the sciatic nerve, which is why a good examination looks beyond one muscle.
Can deep gluteal syndrome go away on its own?
Many cases improve with education, activity changes and exercise, and some studies report resolution within roughly five weeks in selected patients. Others linger, particularly if the trigger, such as long sitting, continues. If it has not improved after several weeks, get it examined.
What does deep gluteal pain feel like?
Usually a deep ache or burn in one buttock, sometimes with tingling or pain down the back of the thigh. It typically builds with sitting and eases when you stand or walk a little. Pain mostly in the lower back, or with leg weakness, suggests another cause.
Do I need an MRI?
Not always. Diagnosis is usually based on your symptoms and examination, with imaging used when the picture is unclear, when other causes need excluding, or when a specialist is considering injection or surgery.
Is sitting really that bad for it?
Sitting itself is not harmful, but low or hard seats, a knee higher than the hip and objects in a back pocket can increase pressure on the nerve. Raising the seat, breaking up long spells and emptying your pockets often reduces symptoms noticeably.
Sources
- A Patient’s Guide to Deep Gluteal Syndrome, Royal National Orthopaedic Hospital
- Deep gluteal syndrome: an overlooked cause of sciatica, British Journal of General Practice
- Deep gluteal syndrome as a cause of posterior hip pain and sciatica-like pain
- Endoscopy for sciatic nerve entrapment in deep gluteal syndrome: a systematic review
- Review of buttock and posterior thigh pain, PubMed
- A systematic review of conservative and surgical treatments for deep gluteal syndrome, PubMed