Sciatica refers to pain that radiates along the course of the sciatic nerve, typically from the lower back into the buttock and down the leg. It is a symptom rather than a diagnosis and is usually caused by irritation or compression of one or more spinal nerve roots in the lower back.
The most common cause of sciatica is a lumbar slip disc, although other conditions such as lumbar canal stenosis, spondylolisthesis and spinal tumors can also cause similar symptoms.
Sciatica can range from mild discomfort to severe, disabling leg pain that affects walking, sitting and daily activities.
Common Symptoms
Patients may experience:
Pain radiating from the lower back into the buttock and leg
Sharp, shooting or electric shock-like pain
Burning sensation in the leg
Tingling or numbness in the leg or foot
Weakness in the leg or foot
Difficulty standing or walking for prolonged periods
Pain aggravated by coughing, sneezing or straining
Pain while sitting for long periods
Typically, leg pain is more severe than back pain.
Causes & Risk Factors
Common causes include:
Lumbar Slip Disc (most common)
Lumbar Canal Stenosis
Spondylolisthesis
Degenerative disc disease
Spinal tumors
Spinal infections
Rarely, piriformis syndrome
Risk factors include:
Age-related degeneration
Prolonged sitting
Heavy lifting
Obesity
Sedentary lifestyle
Smoking
Repetitive bending activities
When Should You Seek Medical Advice?
Medical evaluation is recommended if:
Leg pain persists beyond a few days
Symptoms interfere with sleep or daily activities
Pain is progressively worsening
Numbness develops in the leg or foot
Weakness develops in the foot or ankle
Walking becomes difficult
Symptoms do not improve with rest or medications
Seek Immediate Medical Attention If:
Progressive weakness develops
Foot drop occurs
Severe numbness develops around the groin region
Loss of bladder or bowel control occurs
These symptoms may indicate severe nerve compression requiring urgent treatment.
How Is It Diagnosed?
Clinical Examination
A detailed history and neurological examination help identify the affected nerve root and assess symptom severity.
X-Ray
May identify spinal degeneration, instability or alignment abnormalities.
MRI
MRI is the investigation of choice and helps identify:
Slip disc
Nerve compression
Lumbar canal stenosis
Other spinal pathologies
CT Scan
Occasionally used when MRI cannot be performed or additional bony detail is required.
Blood Tests
Rarely required unless infection or inflammatory conditions are suspected.
Treatment Options
Non-Surgical Treatment
Most patients improve without surgery.
Treatment may include:
Activity modification
Medications
Physiotherapy
Nerve mobilization exercises
Core strengthening
Posture correction
Weight management
Lifestyle modifications
Many patients experience gradual improvement over weeks to months.
Surgical Treatment
Surgery may be considered when:
Severe pain persists despite adequate treatment
Progressive weakness develops
Foot drop occurs
Daily activities become significantly restricted
Significant nerve compression is identified on MRI
Common surgical options include:
Microdiscectomy
Endoscopic Discectomy
Minimally Invasive Spine Surgery
Lumbar Decompression Surgery
The choice of procedure depends on the underlying cause and severity of nerve compression.
Frequently Asked Questions
1. What is Sciatica?
Sciatica refers to pain radiating down the leg due to irritation or compression of the sciatic nerve or its nerve roots.
2. Is Sciatica the same as a Slip Disc?
No. Sciatica is a symptom, while a slip disc is one possible cause of sciatica.
3. Does every patient with Sciatica need surgery?
No. Most patients improve with conservative treatment.
4. How long does Sciatica last?
The duration varies, but many patients improve within weeks to a few months.
5. Can walking help Sciatica?
In many cases, gentle walking is beneficial and promotes recovery.
6. Is bed rest helpful?
Prolonged bed rest is generally discouraged as it may delay recovery.
7. What is Foot Drop?
Foot drop is weakness of the muscles that lift the foot and may indicate significant nerve compression.
8. Can physiotherapy help?
Yes. Physiotherapy often plays an important role in recovery and prevention of recurrence.
9. Can Sciatica recur?
Yes. Symptoms may recur, particularly if underlying risk factors are not addressed.
10. When should I worry about Sciatica?
Progressive weakness, foot drop, severe numbness or bladder/bowel symptoms require urgent medical attention.
Related Conditions
Slip Disc (Disc Herniation)
Lumbar Canal Stenosis
Spondylolisthesis
Mechanical Low Back Pain (Lumbago)
Peripheral Neuropathy
Spinal Tumor
When Should You Consult a Spine Specialist?
If you have persistent leg pain, numbness, weakness or difficulty performing daily activities, a consultation with a spine specialist can help identify the cause and guide appropriate treatment.
Early evaluation is particularly important if symptoms are severe, progressive or associated with neurological weakness.
Need Expert Advice?
Book a consultation with Dr. Siddharth Katkade or upload your MRI/report for review through our Patient Resource Centre.
Need Clinical Evaluation?
Consult with Dr. Siddharth Katkade (MBBS, MS, DNB, FASSI Germany/UK) for accurate diagnosis and personalized spine treatment.
