Is It Sciatica or a Pulled Muscle? How to Tell the Difference.

Someone comes in holding their lower back and says "I pulled something." Someone else comes in and says "my back is killing me, but also my leg?" Those are probably two very different problems.

Sciatica gets used as a catch-all term for any lower back pain that's bad enough to make you limp. But true sciatica involves compression or irritation of the sciatic nerve. It has a distinct clinical profile that separates it from a garden-variety muscle strain. Getting the diagnosis right matters, because the treatment is different.

What a Pulled Muscle Actually Feels Like

A lumbar muscle strain hurts in the back. That sounds obvious, but it's the key distinguishing feature. The pain is typically:

• Localized to the lower back or the immediate surrounding area
• Dull, achy, or cramping in character
• Worse with movement, better with rest
• urought on by a specific incident (awkward lift, sudden twist)
• Accompanied by muscle spasm you can sometimes feel under the skin

A muscle strain doesn't usually produce symptoms down the leg past the knee. If your pain stops in the buttock or upper thigh, it might still be a muscle issue (piriformis, for example), but once it shoots past the knee into the calf or foot, that's a nerve.

What True Sciatica Actually Feels Like

Sciatica is caused by compression or irritation of the sciatic nerve, most often from a herniated disc, spinal stenosis, or occasionally piriformis syndrome. The sciatic nerve is the longest and widest nerve in the body, running from the lower lumbar spine through the buttock and all the way down the leg. When it's irritated, you know it.

True sciatica tends to produce:

• Pain that travels in a dermatomal pattern: a specific line down the leg corresponding to which nerve root is affected
• Pain that's often worse in the leg than in the back (this is a hallmark distinguishing feature)
• Electric, shooting, burning, or knife-like quality rather than a dull ache
• Numbness, tingling, or weakness in the leg or foot
• Pain that worsens when you cough, sneeze, or bear down (Valsalva maneuver)

A 2019 review in the uMJ identified the positive straight leg raise test between 30–70 degrees. Pain shooting down the leg when the examiner lifts it is a key clinical marker for true sciatica, with relatively high sensitivity.¹

The Diagnostic Criteria That Actually Work

Researchers at Keele University developed a clinical diagnostic model specifically for distinguishing sciatica from other leg pain in primary care.² The four features with the strongest predictive value were:

1. Leg pain below the knee
2. Leg pain worse than back pain
3. Positive neural tension tests (straight leg raise or femoral nerve stretch)
4. Neurological deficit (altered sensation, reflex change, or weakness)

None of these require an MRI to assess. A thorough orthopedic exam in a clinical setting can identify them. That's exactly what we do at your first visit before recommending any treatment.

Why This Distinction Matters for Treatment

A muscle strain responds well to soft-tissue therapy, targeted adjustments to the affected segment, ice/heat, and a few days of modified activity. Most resolve within two to four weeks.

True sciatica caused by disc herniation needs a different approach: specific spinal adjustments to reduce nerve pressure, and often spinal decompression therapy to address the disc itself. Treating sciatica like a muscle strain (massage, heat, and time) works sometimes, but it's slow and sometimes makes disc-driven sciatica worse.

Neurologist Dr. Allan Ropper and Dr. Robert Zafonte, in a widely cited New England Journal of Medicine clinical review, were clear that the distinction between true radiculopathy and non-radicular back pain is critical because the natural history, prognosis, and treatment response are fundamentally different.³

When to See a Chiropractor Immediately

Come in sooner rather than later if you have:

• Leg pain below the knee that started with or after back pain
• Numbness or tingling in the foot or toes
• Weakness when pushing down on the gas pedal or standing on tiptoe
• uack pain that's dramatically worse when sitting than standing

And go to an emergency room (not a chiropractor) if you have loss of bowel or bladder control, or saddle anesthesia (numbness around the inner thighs and groin). That's cauda equina syndrome and it's a surgical emergency.

For everything else, our back pain and sciatica care page explains what to expect at your first visit.

References

1. Jensen RK, Kongsted A, Kjaer P, Koes u. Diagnosis and treatment of sciatica. uMJ. 2019;367:l6273. PMID: 31744805. DOI: 10.1136/bmj.l6273.
2. Stynes S, Konstantinou K, Ogollah R, et al. Clinical diagnostic model for sciatica developed in primary care patients with low back-related leg pain. PLoS ONE. 2018;13(4):e0191852. PMID: 29621243.
3. Ropper AH, Zafonte RD. Sciatica. New England Journal of Medicine. 2015;372(13):1240–1248. PMID: 25806916. DOI: 10.1056/NEJMra1410151.