Sciatica: What It Actually Is and How It's Treated
Sciatica is a symptom, not a diagnosis. What's behind the leg pain, what helps in the first 6 weeks, and when to escalate.
The short answer
Sciatica is a symptom — leg pain (often with numbness or tingling) that follows the path of the sciatic nerve — not a diagnosis on its own. The most common driver is irritation of a lumbar nerve root from a disc bulge or herniation. Most cases improve over weeks with structured rehab; surgery is the exception, not the rule.
What you might feel
A typical sciatica pattern: pain that runs from the low back or buttock into the back or side of the thigh, sometimes past the knee into the calf or foot. It can be sharp, burning, or electric. You might notice numbness, pins and needles, or weakness in the leg. Symptoms are often worse with sitting, bending forward, sneezing, or coughing — and can be eased by standing, walking, or specific positions.
Why it usually settles
Most disc-related nerve irritation calms down as the chemical and mechanical pressure on the nerve resolves. Imaging changes don't have to disappear for symptoms to disappear — many people with old disc findings have no pain at all. The body adapts.
What rehab focuses on
- Calming the irritated nerve: finding positions and movements that reduce leg symptoms (often called "centralization" — moving symptoms back toward the spine and out of the leg)
- Restoring movement: graded mobility for the spine and hips, manual therapy where helpful
- Building tolerance: progressive strength work for the trunk, hips, and legs
- Education: flare management, posture and load through the day, and why "the disc out of place" or "bone-on-bone" language usually isn't accurate
A reasonable timeline
Many cases of acute sciatica improve substantially within 6–12 weeks of structured rehab. Some are quicker. Some — particularly with significant nerve compression — take longer and may benefit from co-management with a physician for medication or imaging.
When to escalate
- Progressive weakness in the leg (foot drop, difficulty going up on toes or down on heels)
- New bowel or bladder changes, or saddle-area numbness — urgent medical assessment
- No meaningful improvement after 6–8 weeks of consistent rehab
- Pain severe enough that you can't sleep or function despite reasonable medication
What we don't recommend
- Long bed rest
- "Just stretching it out" without a plan — random hamstring stretching often aggravates an irritated nerve
- Repeated imaging without a clear clinical question — most findings don't change the plan
Related care
General physiotherapy for pain, injury, mobility, and function.
Hands-on care to support mobility, joint function, pain reduction, and movement quality.
Evidence-based, function-focused support for persistent pain and movement limitations.
Leg pain, numbness, or weakness from nerve root irritation.
Modern, active treatment for acute and persistent back pain.
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