Sciatica: Causes, Symptoms and Treatment for Back and Leg Pain
A comprehensive medical guide to understanding nerve compression, alleviating radiating pain, and restoring mobility.
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What Is Sciatica?
Sciatica is nerve pain that travels along the sciatic nerve — the longest nerve in the body, running from the lower back through the hips and down each leg.
It develops when this nerve gets compressed or irritated, usually by a herniated disc, bone spur, or spinal narrowing.
Unlike general back pain, sciatica is easy to recognise because the pain radiates well beyond the back and into the leg.
Common Symptoms
Do not ignore these physical indicators associated with sciatic nerve compression:
Radiating Pain
Pain radiating from lower back through the buttock and down one leg.
Burning Sensation
A sharp, burning, or shooting sensation down the lower extremities.
Numbness & Tingling
Tingling or numbness along the sciatic nerve path.
Sitting Discomfort
Pain that worsens significantly with sitting, coughing, or moving.
What Causes Sciatica?
- Herniated or slipped disc pressing on the nerve root
- Spinal stenosis (narrowing of the spinal canal)
- Degenerative disc disease or bone spurs
- Piriformis syndrome, where a tight hip muscle irritates the nerve
- Spondylolisthesis (a slipped vertebra)
- Pregnancy, obesity, or prolonged sitting, which add pressure on the lower spine
How Sciatica Is Diagnosed
Our structured 3-tier comprehensive diagnostic protocol maps over 80 specific clinical history, nerve tension testing, and neuroimaging parameters for precise care.
1. Medical History & Nerve Path
Detailed recording of radiating pain distribution, electrical shocks, and reflex changes.
- Radiating Pain Distribution: Mapping pain path below the knee into calf or foot.
- Electrical Shock Sensations: Recording sharp, lightning-like pain jolts down the leg.
- Dermatomal Numbness: Logging patchy or continuous sensory loss along L5 or S1 nerve paths.
- Sitting Pressure Trigger: Documenting sharp pain spikes when sitting on hard office chairs.
- Valsalva Manoeuvre Pain: Recording pain increases during coughing, sneezing, or straining.
- Foot Drop History: Screening for episodes of tripping or inability to lift foot front.
- Onset Context: Determining if sciatica began suddenly during heavy lifting or gradually.
- Unilateral vs Bilateral: Verifying if pain affects one leg predominantly or both sides.
- Previous Sciatic Flare-Ups: Reviewing historical recurring lower extremity nerve pain.
- Occupational Risk Factors: Checking long-haul driving or heavy bending job requirements.
- Previous Treatment Response: Evaluating past epidural injections or physical therapy.
- Night Sleep Disruption: Assessing if nerve pain prevents finding a comfortable sleeping position.
- Cauda Equina Screening: Checking critical red flags for bladder or bowel incontinence.
- Pregnancy & Weight Factors: Factoring in gestational strain or rapid weight increase.
- Pain Intensity Scaling: Scoring shooting nerve distress using standard scales.
- Symptom Progression Rate: Tracking how quickly numbness or weakness has expanded down the leg.
- Symptom Triggers: Identifying specific movements worsening nerve irritation.
- Associated Fatigue: Screening for general muscle tiredness.
- Activity Limitations: Assessing impact on daily walking.
- Overall Health Overview: Comprehensive medical status summary.
2. Physical Examination
Hands-on nerve stretch testing, reflex evaluation, and muscle power screening.
- Straight Leg Raise (SLR) Test: Provoking sciatic nerve roots between 30 and 70 degrees of elevation.
- Bragard Test: Adding ankle dorsiflexion during SLR to intensify sciatic tension.
- Bowstring Test: Applying pressure to popliteal fossa during SLR to confirm nerve root tension.
- Slump Test: Seated neural tension assessment across spinal cord and sciatic pathway.
- Deep Tendon Reflexes: Testing knee jerk (L4) and ankle jerk (S1) reflex integrity.
- Myotome Power Testing: Checking muscle strength for great toe extension (L5) and calf raises (S1).
- Dermatome Sensation Mapping: Assessing light touch and pinprick across L4, L5, and S1 skin zones.
- Femoral Nerve Stretch Test: Checking upper lumbar root irritation (L2-L4).
- Piriformis Provocation (FAIR Test): Differentiating piriformis muscle entrapment from disc sciatica.
- Toe and Heel Walking: Screening for lower limb motor deficits under weight-bearing.
- Lumbar Range of Motion: Measuring flexion and extension flexibility limitations.
- Posture & Antalgic Lean Check: Observing protective spinal shifting away from nerve pressure.
- Palpation Screening: Checking lumbar spine tenderness and muscle spasm guarding.
- SI Joint Screening: Ruling out pelvic joint referral patterns.
- Functional Mobility Check: Observing sit-to-stand and walking stride symmetry.
- Balance & Proprioception: Testing stability.
- Flexibility Screening: Evaluating posterior chain length.
- Trunk Control Screen: Assessing core support.
- Functional Movement: Observing daily mechanics.
- Physical Summary: Compiling examination metrics.
3. Imaging & Neurodiagnostics
Lumbar MRI scans, EMG nerve studies, stenosis check, and diagnosis.
- Lumbar MRI Scan (Gold Standard): Visualizing disc herniations, nerve root compression, and spinal canal dimensions.
- Lumbar X-Rays: Checking for bone spurs, spondylolisthesis, or degenerative narrowing.
- CT Scan with Myelogram: Detailed cross-sectional bony canal view when MRI is contraindicated.
- Electromyography (EMG): Testing muscle electrical activity to confirm chronic nerve root injury.
- Nerve Conduction Study (NCS): Measuring electrical impulse speed across sciatic nerve branches.
- Foraminal Stenosis Screening: Evaluating nerve exit channel narrowing on axial slices.
- Blood Inflammatory Tests: Running ESR and CRP to rule out systemic infection or tumor.
- Differential Diagnosis: Distinguishing discogenic sciatica from piriformis entrapment, diabetic neuropathy, or hip pathology.
- Diagnostic Selective Nerve Root Block: Confirming precise pain generator via targeted fluoroscopic anesthetic injection.
- Sequential MRI Comparison: Reviewing prior scans to track disc herniation resorption or progression.
- Surgical Consultation Review: Consulting spine surgeons for severe motor deficits or failure of conservative care.
- Comprehensive Clinical Diagnosis: Synthesizing neurological tests, history, and MRI findings into a definitive diagnosis.
- Digital Record Archiving: Secure cloud storage of radiological reports.
- Specialist Peer Review: Multi-expert consensus on nerve management.
- Risk Stratification: Assessing nerve root compromise levels.
- Prognosis Review: Estimating functional recovery timelines.
- Lab Correlation: Matching systemic blood markers.
- Bone Density Check: Screening skeletal health.
- Follow-up Imaging Plan: Scheduling check-up scans if needed.
- Clinical Clearance: Approving targeted therapy start.
4. Treatment & Recovery Plan
Targeted nerve gliding, spinal decompression, and lifestyle care.
- Nerve Gliding Exercises: Specialized stretches to ease tension and improve mobility along the sciatic nerve pathway.
- Spinal Decompression Therapy: Gentle traction methods to alleviate disc bulge pressure on nerve roots.
- Targeted Physiotherapy: Strengthening core stabilizers to support the lumbar spine and prevent re-injury.
- Pain Management Protocols: Non-invasive modalities and coordinating epidural injections for acute flare-ups.
- Ergonomic & Posture Training: Correcting sitting habits and lifting mechanics to avoid nerve compression.
- Home Exercise Program: Custom daily stretching regimens to maintain lower limb and back flexibility.
- Activity Modification: Guidance on pacing daily movements and avoiding aggravating postures.
- Heat & Cold Therapy Guidance: Managing nerve inflammation and muscle guarding safely at home.
- Weight Management Support: Reducing mechanical load stress on lumbar discs.
- Sleep Hygiene Optimization: Pillow placement adjustments to relieve nighttime nerve tension.
- Milestone Progress Tracking: Monitoring recovery week by week with clinical coordinators.
- Regular Clinical Follow-ups: Periodic evaluations with senior care specialists.
- Patient Self-Care Briefing: Clear instruction on managing nerve flare-ups independently.
- Long-Term Protection Strategy: Preserving functional independence and active lifestyle freedom.
- Maintenance Care Routines: Sustaining spinal health post-rehabilitation.
- Re-injury Prevention: Safe bending mechanics training.
- Mobility Enhancement: Safe hip and core movement maintenance.
- Specialist Consult Coordination: Multi-expert review for persistent nerve root compression.
- Recovery Milestone Review: Assessing treatment success.
- Active Lifestyle Clearance: Final approval for return to full daily activities.
Treatment Options
Most sciatica cases improve within a few weeks with non-surgical care. Surgery is considered only for severe nerve compression, ongoing weakness, or loss of bladder or bowel control.
- Rest combined with gentle, guided movement
- Physiotherapy to relieve nerve pressure and strengthen the core and lower back
- Stretching exercises targeting the hips and lower spine
- Pain-relief or anti-inflammatory medication, as advised by a doctor
- Epidural or targeted injections for severe, persistent pain
- Posture correction and ergonomic adjustments for daily activities
Meet Our Experts
Our team focuses on assessing sciatica and related lower extremity nerve pain, improving spinal mobility, building strength, and helping patients return safely to everyday activities through an individualized care plan.
Ask Our Specialist
Sciatica symptoms can affect the lower back, hips, pelvis, and legs. A suitable care plan starts with understanding your symptoms and movement limitations, followed by appropriate clinical assessment and treatment options to help manage discomfort, improve mobility, and support a safe return to daily activities.
Why sciatic pain travels down the leg
Compression of the nerve roots in the lower spine triggers shooting pain that follows the entire pathway down into the lower extremities...
Targeted exercises for nerve relief
Gentle nerve glides and lumbar stretches relieve tension around compressed nerve roots, accelerating recovery without surgery...
The importance of early intervention
Addressing nerve irritation promptly prevents chronic pain development and protects long-term lower limb strength and function...
When to See a Doctor
Seek prompt medical care if you experience:
- Pain lasting more than a few weeks or getting worse
- Growing weakness or numbness in the leg or foot
- Loss of bladder or bowel control — seek immediate care
- Pain following an injury or accident
Early diagnosis makes sciatica far easier to treat, relieving nerve pressure and helping you move freely again without lasting complications.
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Frequently Asked Questions
Common questions about sciatica, symptoms, diagnosis, and treatment.