Sciatica is one of the most common causes of lower back and leg pain, affecting millions of people each year. The condition occurs when the sciatic nerve—the largest nerve in the body—is irritated or compressed, leading to pain that radiates from the lower back into the buttock, thigh, calf, or foot.
Symptoms can range from mild discomfort to severe, debilitating pain that interferes with work, sleep, exercise, and daily activities. Fortunately, most cases can be successfully treated when the underlying cause is accurately diagnosed and addressed.
What Is Sciatica?
Sciatica refers to pain that travels along the course of the sciatic nerve. The sciatic nerve originates from several nerve roots in the lower spine and travels through the pelvis, buttocks, and down each leg.
Sciatica is not a diagnosis itself, but rather a symptom of an underlying condition affecting the spinal nerves.
Common causes include:
- Lumbar disc herniation
- Spinal stenosis
- Degenerative disc disease
- Spondylolisthesis
- Foraminal narrowing
- Nerve inflammation or irritation
- Less commonly, tumors, infections, or traumatic injuries
The duration of symptoms varies depending on the cause. Some episodes resolve within weeks, while others may become chronic without appropriate treatment.
Types of Sciatica
Acute Sciatica
Acute sciatica typically lasts less than six weeks and is often caused by temporary nerve irritation or a disc injury. Many patients improve with conservative treatment.
Chronic Sciatica
Chronic sciatica persists for more than three months and may be associated with ongoing nerve compression, degenerative changes, or structural abnormalities within the spine.
Bilateral Sciatica
Bilateral sciatica affects both legs simultaneously and may indicate a more significant spinal disorder requiring prompt medical evaluation.
Pregnancy-Related Sciatica
During pregnancy, hormonal changes, weight gain, and changes in posture can increase stress on the lower spine and pelvic structures, contributing to sciatic nerve irritation.
Symptoms of Sciatica
Symptoms vary depending on the location and severity of nerve involvement.
Common symptoms include:
- Sharp, shooting, or electric-like pain radiating down the leg
- Burning discomfort in the buttock, thigh, calf, or foot
- Numbness or tingling sensations
- Muscle weakness
- Pain that worsens with prolonged sitting
- Increased discomfort with coughing, sneezing, or straining
- Difficulty standing or walking for extended periods
Most patients experience symptoms on only one side of the body.
How Is Sciatica Diagnosed?
Diagnosis begins with a comprehensive medical history and physical examination.
Depending on your symptoms, additional testing may include:
- MRI of the lumbar spine
- CT scan
- X-rays
- Electromyography (EMG) and nerve conduction studies
- Diagnostic ultrasound evaluation
Identifying the precise source of nerve irritation is essential for selecting the most effective treatment.
Treatment Options
Treatment should be individualized based on the underlying cause, severity of symptoms, and functional limitations.
Physical Therapy
A structured rehabilitation program can improve flexibility, strengthen supporting muscles, correct movement patterns, and reduce pressure on the affected nerve.
Medications
Certain medications may help reduce inflammation, calm nerve irritation, and improve function during recovery.
Image-Guided Injections
Ultrasound-guided and fluoroscopy-guided injections can precisely target areas of inflammation around the affected nerves, joints, muscles, or connective tissues.
Epidural Steroid Injections
For patients with nerve root inflammation, epidural injections may reduce irritation and provide significant pain relief while facilitating rehabilitation.
Nerve Blocks
Targeted nerve blocks may help reduce pain and improve function in selected patients with persistent symptoms.
Regenerative Medicine
Platelet-Rich Plasma (PRP) therapy utilizes growth factors derived from a patient’s own blood to support tissue healing and recovery in carefully selected musculoskeletal conditions.
Radiofrequency Ablation
For certain pain generators within the spine, radiofrequency ablation may provide longer-lasting relief by interrupting pain transmission from affected nerves.
Surgery
Although most patients improve without surgery, surgical intervention may be appropriate when significant nerve compression causes progressive weakness, severe pain, or loss of function.
When Should You Seek Medical Attention?
Prompt medical evaluation is recommended if:
- Pain persists despite conservative treatment
- Symptoms progressively worsen
- Significant weakness develops
- Walking becomes increasingly difficult
- Pain follows a major injury
- Symptoms interfere with work, sleep, or daily activities
Seek immediate medical attention if you experience:
- Loss of bladder or bowel control
- Numbness in the groin or saddle region
- Rapidly worsening weakness
These symptoms may indicate a medical emergency requiring urgent treatment.
Frequently Asked Questions
What causes sciatica?
The most common cause is a lumbar disc herniation that compresses a spinal nerve root. Other causes include spinal stenosis, degenerative disc disease, and foraminal narrowing.
How long does sciatica last?
Many cases improve within several weeks. Chronic symptoms may persist longer and often require a more comprehensive treatment approach.
Can sciatica resolve without treatment?
Some mild cases improve on their own. However, persistent or worsening symptoms should be evaluated to prevent long-term nerve injury.
What does sciatica feel like?
Patients commonly describe sharp, shooting, burning, or electric-like pain radiating from the lower back into the leg.
Are exercise and physical therapy helpful?
Yes. Appropriately selected stretching and strengthening exercises are often an important component of treatment.
Is surgery always necessary?
No. Most patients improve with non-surgical treatment options.
Can PRP help sciatica?
PRP may be beneficial in selected cases involving certain musculoskeletal pain generators. A thorough evaluation is necessary to determine candidacy.
Can sciatica cause weakness?
Yes. Compression of a spinal nerve can lead to weakness in the affected leg or foot.
What is the difference between sciatica and neuropathy?
Sciatica results from irritation of spinal nerve roots, whereas peripheral neuropathy involves damage to peripheral nerves and often affects both feet symmetrically.
When should I see a specialist?
If symptoms persist, worsen, or interfere with daily activities, a specialist evaluation can help identify the underlying cause and guide treatment.
Take the Next Step
If you are experiencing persistent lower back pain, leg pain, numbness, tingling, or weakness, early evaluation can make a significant difference.
At the Turquoise Institute for Interventional Pain, Headache, and Regenerative Medicine, we provide comprehensive evaluations and individualized treatment plans designed to identify the source of your pain and help you return to the activities that matter most.
Schedule a consultation today to learn about your treatment options and begin your path toward lasting relief.