Short answer: a deep ache in the buttock, often worse with sitting, is commonly put down to a tight or irritated piriformis muscle. Sometimes that is part of it. But the label gets used for a lot of different problems, and the same area can hurt for reasons that start in the lower back, the hip or the hamstring tendon. What usually helps is working out what aggravates it, adjusting that, and building the hip’s capacity step by step, not aggressive stretching.
What it is
The piriformis is a small muscle deep in the buttock. It runs from the base of your spine to the top of your thigh bone and sits close to the sciatic nerve. “Piriformis syndrome” is the name given when pain in this area is blamed on the muscle irritating the nerve or being overloaded itself. Some clinicians now use the broader term “deep gluteal syndrome” for pain arising from the structures in this space, including the sciatic nerve.
It often looks like this:
- A deep ache in the middle of the buttock, usually one side
- Worse with long sitting, driving or sitting on a hard seat
- Sometimes spreading down the back of the thigh, occasionally further
- Worse with running, hills or walking at pace
Why the label is shaky
There is no scan or single test that proves the piriformis is the problem. It is a clinical judgement, and the same pattern of pain can come from several places, which is why the diagnosis is argued over. I don’t want to hand you a label I can’t prove. What I look for is what the area is being asked to do, and what reproduces your pain.
Or is it something else?
Deep buttock pain commonly comes from:
- The lower back. Nerve irritation from the back can refer to the buttock and down the leg, and it is easy to mistake for a piriformis problem. See sciatica and why sciatica keeps coming back.
- The tendon where the hamstring attaches to the sit bone. Typically sore sitting on hard surfaces, and with hills or speed work. See hamstring strains.
- The outside of the hip. Tendons and the bursa there can refer pain into the buttock. See hip bursitis or tendon pain.
- The hip joint. Deeper, often in the groin, stiff first thing. See knee and hip osteoarthritis.
- The sacroiliac (SI) joint, where the spine meets the pelvis. See SI joint pain.
These need different plans, which is why guessing from a video and stretching for months so often goes nowhere.
What usually helps
Start with what aggravates it. For most people that is long sitting, a particular seat, a sudden step up in running or hills, or a gym program that loaded the hip harder than it was ready for. There is no list of banned positions. It is usually pretty basic: change the things that flare it, for a while, and build back.
Then build capacity. I lean towards gentle holds (isometric work) to settle it, then strength through the hips and trunk in steps. With deep buttock pain I am more conservative than I would be with a tendon. I would rather you stay at the low end of discomfort while you do it, and back off sooner if it lingers, spreads down the leg or is worse the next day. The right dose depends on you, which is why it is set after an assessment.
Aggressive stretching of an irritated buttock or nerve, and digging a ball or foam roller into the spot, often make it worse. This is the same point I make about sciatica and stretching. If the nerve is involved, I sometimes use gentle nerve gliding, aimed at calming the nerve’s sensitivity rather than stretching it. The research on nerve gliding is modest, so I treat it as one part of the plan, not the plan.
What I do and don’t use
I use hands-on work, mostly massage and joint mobilisation, where it helps, alongside the loading. I don’t use dry needling, ultrasound or shockwave, which are often offered for this area. I explain why in my dry needling post. That is my choice for my practice, not a claim about every clinician. If you are considering an injection, discuss it with your doctor.
How long does it take?
It depends on what is driving it, how long you have had it and what you need your hip to do, so it can’t be known before an assessment. As a rough guide, I usually see people for at least six visits, and sometimes ten to twelve for longer-standing or more stubborn cases. I plan for a finish line: once it is under control and you know how to manage it, I discharge you rather than book maintenance.
When to get it checked
Get urgent medical help for new problems controlling your bladder or bowel, numbness around the genitals or anus, or weakness or numbness in both legs. See a doctor promptly for buttock pain with a fever or feeling unwell, after a significant fall or accident, or if you have had cancer. Constant pain at night that doesn’t change with position, a leg that is getting weaker, or pain that hasn’t improved after a few weeks should also be assessed.
What the first appointment involves
I see people at Shop 8 / 19 Ways Road, Hampstead Gardens. The initial appointment is $150 (45 minutes), HICAPS is on site, and no referral is needed for private appointments. I take a history first: where it hurts, what sets it off, what changed. Then I test how your hip and lower back move and handle load, and what reproduces the pain. You leave knowing what I think is going on, what I am not sure of yet, and what the first few weeks look like. You usually don’t need a scan first. If I think you need imaging or a doctor, I’ll say so.
Fees and claiming are on the services and FAQ pages.
Common questions
Is piriformis syndrome the same as sciatica? No. Sciatica describes pain travelling down the leg from the lower back or buttock. Piriformis syndrome is one proposed source of buttock pain, and some people are told they have it when the real driver is the back or the hip.
Should I stretch it or use a ball? Usually not as the main plan. Both can irritate it. Gentle strengthening that you can build on tends to work better.
Can sitting cause it? Long sitting often aggravates it, but it is rarely the only factor. It is usually sitting plus a recent change in training or load.
Do I need an MRI? Usually not at the start. Changes on scans are common in people with no pain, and the diagnosis is made by assessment, not by the picture.
I treat hip, buttock and groin pain at my clinic in Hampstead Gardens, Adelaide. For the wider picture, see hip and groin physio.