Sciatica or Piriformis Syndrome? How to Tell the Difference
Pain radiating down your leg gets labeled “sciatica” a lot of the time — but two very different conditions present almost identically and have completely different treatments. Knowing which one you actually have matters. Here is how we sort it out in our Uptown Dallas chiropractic practice.
What both look and feel like
Both true sciatica and piriformis syndrome can cause:
- Pain radiating from the back of the glute down the back of the thigh
- Tingling, numbness, or burning sensations down the leg
- Pain worsening with prolonged sitting
- Sharp pain on certain movements
From the outside, they can be impossible to tell apart. The treatment paths are completely different though.
True sciatica
True sciatica means the sciatic nerve is being irritated at its origin in the lower back, usually by:
- A bulging or herniated disc
- Spinal stenosis
- Spondylolisthesis (one vertebra slipping on another)
- Other spine-level structural issues
Piriformis syndrome
Piriformis syndrome means the sciatic nerve is being compressed not at its origin but downstream, where it passes through or under the piriformis muscle deep in the hip. The cause is usually:
- A tight or hypertonic piriformis
- Glute weakness causing the piriformis to overwork as a hip stabilizer
- Repetitive activities that load the hip in one specific way
- Prolonged sitting on hard surfaces
How we figure out which one you have
The assessment looks for distinct patterns that point to one or the other. Some of the clues we use:
Clue 1: Where does it start?
True sciatica often starts as low back pain, then radiates into the leg as it progresses. Piriformis syndrome more often starts in the glute itself, with no low back pain at all.
Clue 2: How does it respond to specific movements?
True sciatica often worsens with forward bending, sitting upright with poor support, or any movement that compresses the lower spine. Piriformis syndrome often worsens with hip internal rotation, single-leg stance, or specific glute loading.
Clue 3: How far does the symptom travel?
True sciatica often radiates below the knee — sometimes all the way to the foot, with foot tingling or weakness. Piriformis syndrome more often stays in the glute and back of the thigh, rarely below the knee.
Clue 4: Physical tests
Specific orthopedic tests help differentiate. A straight leg raise test that reproduces leg symptoms suggests true sciatica. A FAIR test (flexion, adduction, internal rotation of the hip) that reproduces symptoms suggests piriformis syndrome. There are several more we use.
Clue 5: How does it respond to direct piriformis release?
If we can release the piriformis manually and your symptoms immediately reduce or change, that points strongly to piriformis involvement.
Why the difference matters
True sciatica treatment focuses on the spine — decompression-style work, disc-friendly loading, and rebuilding spine stability. Piriformis syndrome treatment focuses on the hip — piriformis release, glute strengthening, and hip movement re-education. Treating one as the other does not help and sometimes makes things worse.
What does the recovery timeline look like?
Piriformis syndrome often resolves in 4-8 weeks with the right treatment. True sciatica varies more widely — some cases resolve in a few weeks, others take 8-12+ weeks. Chronic, structural-driven cases sometimes need ongoing management.
When to seek immediate care
If you have any of these, seek medical evaluation immediately rather than chiropractic care: progressive weakness in the leg, loss of bladder or bowel control, numbness in the saddle area, or symptoms following a major trauma.
Bottom line
If you have shooting leg pain, do not just take “sciatica” as the diagnosis. The same symptoms can come from completely different drivers, and the right treatment depends entirely on which one you actually have. A proper assessment sorts this out quickly.
Not sure what is causing your leg pain?
Book a free 15-minute discovery call with Dr. Ryan.
Written by Dr. Ryan Giniel, D.C., founder of RXN Performance in Uptown Dallas. More about Dr. Ryan →
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