Right now, stand up. If your pain shoots BELOW the knee AND coughing or sneezing makes it worse, the pattern is more consistent with true sciatica (lumbar origin). If your pain stops at the back of the thigh AND prolonged sitting beyond 30 minutes is unbearable, the pattern fits deep gluteal syndrome (hip origin). This is decision support — confirm with a clinician before starting a new treatment, especially because the most common DIY fix for the second pattern can make it worse.
Think of the sciatic nerve like a long garden hose running from your lower back down to your foot. The water pressure failing — your pain — tells you the hose is pinched. But it doesn't tell you WHERE. There are two common pinch points: a kink near the tap (your lumbar spine, where a disc presses on the root) or a kink halfway down where the hose runs through a tight gap (your deep gluteal muscles squeezing the nerve). Unkinking the wrong spot does nothing. Worse, in some pseudo-sciatica presentations, stretching the muscles on top of the nerve actually presses the hose harder against the bony pelvis behind it.
"Sciatica" describes the pain. It doesn't tell you where the nerve is being pinched — and that's the only thing that determines whether your treatment will work or make it worse. Two pinch points, two different fixes.
Before any self-screen, run this check. Cauda Equina Syndrome is rare (1-3 per 100,000) but catastrophic if missed — surgical decompression within 24-48 hours is required to prevent permanent paralysis and incontinence. The bullets below are non-negotiable. Any one of them means Emergency Department today, not your physical therapist next week.
Stand up. If your pain shoots BELOW the knee AND coughing or sneezing makes it worse, the pattern fits true sciatica. If your pain stops at the back of the thigh AND prolonged sitting beyond 30 minutes is unbearable, the pattern is more consistent with deep gluteal syndrome.
This is decision support, not a diagnosis. The two most reliable patient-doable signs — below-the-knee pain and Valsalva (cough) aggravation — tell you which pinch point to investigate next with a clinician. Confirm the pattern before starting a new treatment, because the most common DIY fix for the second pattern can make it worse.
Takes 30 seconds. No equipment. Two questions.Same shooting pain. Two pinch points. Use this comparison to decide which pattern your symptoms fit, then take the answers to a physical therapist for confirmation before starting a treatment.
| Symptom / Sign | True Sciatica (Lumbar Origin) | Pseudo-Sciatica / DGS (Hip Origin) |
|---|---|---|
| Pain below the knee | HallmarkRequired. Pain crosses the knee into the calf or foot. | RarePain typically stops at the back of the thigh. |
| Dermatomal pattern (specific territory) | Common — follows L4, L5, or S1 territory (e.g., big toe, calf). | Absent or non-dermatomal — vague posterior thigh. |
| Deep buttock pain | Variable; may be absent. | HallmarkRequired. Dominant complaint. |
| Aggravated by coughing / sneezing (Valsalva) | Common — strongly implicates lumbar origin. | Absent. |
| Aggravated by prolonged sitting | Moderate. | Severe — over 30 minutes seated is the key trigger. |
| Cross-legged sitting reproduces the pain | Absent. | Common. |
| Neurological deficits (weakness, reflex loss, numbness) | Common — reduced ankle reflex, foot drop, dermatomal numbness. | Rare — reflexes typically preserved. |
| Back pain as primary complaint | Often present. | Usually absent — isolated buttock pain. |
| Eased by | Walking, standing, lumbar extension, lying flat. | Movement, position change, standing, neutral pelvis. |
Key differentiator (one line): true sciatica produces pain below the knee with Valsalva aggravation. Pseudo-sciatica produces deep gluteal pain that rarely crosses the knee, with severe seated intolerance but no Valsalva response.
The pattern is more consistent with lumbar nerve-root irritation. The most common cause is a herniated disc producing both mechanical compression and chemical inflammation around the L4, L5, or S1 nerve root. Most disc herniations actively shrink and resorb over weeks to months — the natural history is excellent.
The pattern is more consistent with sciatic nerve entrapment in the subgluteal space — most often by a hypertonic or hypertrophied piriformis, but the umbrella term covers gemelli-obturator entrapment and proximal hamstring entrapment too. Unlike disc herniations, anatomical entrapments do not spontaneously resolve, which is why active strengthening and biomechanical correction matter here.
In some pseudo-sciatica / deep gluteal presentations — particularly where the nerve is being compressed against the bony pelvis or fibrous bands — aggressive piriformis stretching (figure-4, pigeon pose, prolonged static stretches) can compress the nerve further and make symptoms worse rather than better. This does not apply to every case, but it is common enough that strengthening is the recommended first move, with stretching introduced cautiously and only if it does not reproduce shooting pain. If a stretch reproduces sharp pain down the leg, stop immediately and have a clinician confirm before continuing.
These are NOT clinical-grade tests — they are screening checks to help you describe your pattern accurately to a clinician. A "positive" result is a flag, not a diagnosis. Bring the answers to a physical therapist; they can confirm with the clinical-grade special tests (Slump Test, combined piriformis battery) and a neurological exam.
Stand up. Does your typical leg pain shoot below the knee? Does coughing or sneezing make the leg pain spike? Two yeses = pattern fits true sciatica.
How does sitting affect your pain after 30+ minutes? Severe deep buttock burning that eases the moment you stand = pattern is more consistent with deep gluteal syndrome.
Sit and cross the painful leg over the other. Does it reproduce the deep buttock pain or radiating symptoms? Pseudo-sciatica pattern.
Lie on your back. Lift the painful leg straight up with the knee locked. Reproduction of the leg pain between 30-70 degrees of hip flexion = supports lumbar nerve-root tension. Pain only at end-range from hamstring tightness does NOT count. Note: clinical SLR has 91% sensitivity and 26% specificity — it rules out, more than rules in.
Sit on a tennis ball positioned at the deepest point of the buttock. Reproduction of the radiating pain (not just local soreness) = supports DGS.
Important: two or three signs pointing to the same pattern is meaningful. One isolated finding is not. Bring the full set to a clinician for confirmation before starting a new treatment — especially because the most common DIY fix for the pseudo-sciatica pattern can make it worse in some presentations.
Three high-stakes controversies in sciatica management. Each one represents a place where the older standard of care is now contradicted by recent evidence — and the wrong choice can prolong symptoms or worsen them.
A patient with central sensitization can have lumbar-origin pain that no longer requires ongoing nerve compression — the nervous system has learned the pain. These cases benefit from graded exposure and pacing more than from disc-targeted treatment. If you've had pain for many months despite resolving imaging, central sensitization may be a contributing layer.
Progressive single-nerve-root motor weakness (worsening foot drop), cancer history with new severe constant pain not relieved by rest, suspected infection with fever, or major trauma. These bypass the 6-8 week conservative window and warrant urgent imaging, sometimes the same day.
70-90% of true lumbar radiculopathy cases resolve significantly without surgery within 12 weeks. Surgery (lumbar discectomy) gets you there faster in the short term, but at 1-2 years outcomes equalize — multiple systematic reviews, thousands of patients. Unless there is progressive neurological deficit or cauda equina, conservative is the supported first choice. Surgery isn't a failure; it's a speed-up with risks.
Pseudo-sciatica typically has insidious onset linked to a sport (cycling, running) or a sustained sitting posture. True sciatica often has an acute onset — a lift, a twist, a strain — though insidious presentations exist. Onset history is supportive context, not a deciding factor on its own.
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Join The Verdict — FreeSame nerve, two pinch points, two different mechanisms. The sciatic nerve runs from the lumbosacral spine to the foot, passing through the deep buttock on the way. It can be compressed at either end.
The lumbosacral nerve roots (L4, L5, S1) exit the spinal canal through narrow openings called foramina. When a lumbar disc herniates — the inner gel-like core breaches the outer ring — it does two things at once. It mechanically presses on the adjacent nerve root, AND it triggers a local immune response known as chemical radiculitis. The chemical irritation is often more painful than the squeeze itself, which is why even small disc herniations can cause severe leg pain.
The natural history is excellent. Most disc herniations actively shrink and resorb over weeks to months via macrophage-driven inflammatory cleanup. 70-90% of cases recover significantly without surgery within 12 weeks. This is why active conservative management is the first-line recommendation in every current CPG.
The sciatic nerve exits the pelvis through the greater sciatic foramen and travels through a tight muscular tunnel called the subgluteal space, surrounded by the piriformis, obturator internus, gemelli complex, and proximal hamstring tendons. DGS is the umbrella term for sciatic nerve entrapment at any of these peripheral sites. Piriformis syndrome is the most cited subtype — muscle hypertonicity, hypertrophy, or an anatomical variant where the nerve actually pierces the muscle belly.
Unlike disc herniations, these anatomical compressions do not spontaneously resorb. That is why these cases need active strengthening and biomechanical correction rather than waiting it out. The compression is mechanical, not chemical.
This page is decision support, not a clinical assessment. Four honest caveats apply.
Some patients have features of both patterns — for example, a mild disc bulge plus piriformis hypertonicity. The framework gives you a working hypothesis, not a final answer. Two or three signs pointing to the same pattern is meaningful; one isolated finding is not.
The clinical SLR has 91% sensitivity but only 26% specificity — it rules out lumbar nerve tension well, but it generates many false positives. The combined piriformis battery (Active + Seated tests) hits 91% sensitivity / 80% specificity, but it requires a clinician to perform reliably. A patient-doable version of either test is more error-prone.
Particularly when the pattern is mixed, when conservative care has failed at 6-8 weeks, or when red flags are present. Imaging is a tool, not the enemy — the issue is reflexive over-imaging when the clinical picture is already clear.
Use it to describe your pattern accurately to a clinician. Do not use it as a substitute for clinical assessment — especially before starting a new treatment. The framework helps you ask the right question; a physical therapist gives you the confirmed answer.
How strong is the evidence for the claims in this review? Higher = more confidence the claims are supported. This does not measure how large the effect is or how important it is compared with other levers.
Evidence-based treatment order for uncomplicated cases. Start at the top — most people don't need the bottom.
Red flags, progressive weakness, or bowel/bladder changes require immediate medical assessment and change this pathway.
Physio conditions reviewed against clinical evidence. What works, what doesn't, and what to do — from a practising physiotherapist.
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