Sciatica (Lumbar Radiculopathy)
Pain that radiates along the path of the sciatic nerve, from the lower back through the buttock and down the leg, usually caused by compression of a nerve root in the lumbar spine.
Quick Answer
Sciatica is pain that travels along the sciatic nerve, from the lower back through the buttock and down the leg. It is a symptom rather than a diagnosis in itself, and it is most often caused by a lumbar nerve root being compressed by a herniated disc or by narrowing of the spinal canal. Most sciatica improves within weeks with conservative care. Persistent pain, weakness, or loss of bladder or bowel control warrants prompt evaluation.
Key Takeaways
- Sciatica describes radiating leg pain along the sciatic nerve, not a specific diagnosis on its own.
- The usual underlying cause is a compressed lumbar nerve root, often from a herniated disc or spinal stenosis.
- Pain typically follows a path from the lower back into the buttock and down one leg.
- Most cases resolve within a few weeks with activity modification, therapy, and anti-inflammatory care.
- Progressive weakness or bladder and bowel changes require urgent assessment.
At a Glance
| What it is | Radiating pain along the course of the sciatic nerve |
|---|---|
| Common causes | Lumbar herniated disc, spinal stenosis, spondylolisthesis |
| Typical pattern | One-sided pain from the back through the buttock into the leg |
| Associated symptoms | Numbness, tingling, or weakness in the leg or foot |
| First-line treatment | Physical therapy, anti-inflammatory medication, activity modification |
| When to escalate | Progressive weakness or loss of bladder or bowel control |
Symptoms
Sciatica usually causes pain that begins in the lower back or buttock and radiates down the back or side of one leg, sometimes reaching the foot. The pain is often described as sharp, burning, or electric, and it may be accompanied by numbness, tingling, or weakness in the affected leg. It typically affects only one side.
Symptoms often worsen with sitting, standing for long periods, bending, coughing, or sneezing. Some patients find relief by walking or lying down, while for others walking makes the pain worse, a distinction that helps point to the underlying cause. The specific muscles that feel weak and the area of numbness help identify which nerve root is involved.
Common Warning Signs
- Pain radiating from the lower back down one leg
- Burning or electric-like pain in the buttock or thigh
- Numbness or tingling along the leg or into the foot
- Pain worsened by sitting, coughing, or sneezing
- A feeling of leg heaviness or mild weakness
When to Seek Care Promptly
- Progressive or significant leg weakness
- Numbness in the saddle or groin area
- Loss of bladder or bowel control
- Severe pain in both legs
- Sudden inability to walk
Diagnosis
Sciatica is diagnosed primarily through history and physical examination. The physician evaluates the distribution of pain, tests strength, sensation, and reflexes, and performs maneuvers such as the straight leg raise that reproduce nerve-related pain. These findings usually identify which nerve root is irritated and suggest the likely cause.
Imaging is used when symptoms are severe, persistent, or accompanied by weakness. MRI is the study of choice because it clearly shows the nerve roots and any disc herniation or stenosis compressing them. As with other spine conditions, imaging findings are interpreted alongside the clinical picture, since not every abnormality seen on a scan is the source of symptoms.
Treatment
The great majority of sciatica improves without surgery. Early treatment centers on staying reasonably active while avoiding aggravating movements, along with physical therapy and anti-inflammatory medication to calm the irritated nerve. Prolonged bed rest is discouraged, as gentle activity generally supports recovery better.
When pain is significant or slow to settle, an epidural steroid injection can reduce inflammation around the compressed nerve and provide a window for rehabilitation. Because sciatica is a symptom, treatment ultimately targets the underlying cause, whether that is a herniated disc, stenosis, or spondylolisthesis.
Surgery is considered when disabling leg pain persists despite conservative care, when weakness is progressing, or when there are red-flag signs. The specific procedure depends on the cause, for example a microdiscectomy for a herniated disc or a decompression for stenosis. At Atlantic Brain and Spine, these decisions are made through the spine board so the plan reflects combined surgical expertise.
The Diagnosis-to-Treatment Pathway
1. Symptom assessment
The pattern of radiating pain, numbness, and weakness is mapped to a nerve root.
2. Physical examination
Strength, reflexes, and provocative tests such as the straight leg raise are checked.
3. Conservative care
Physical therapy, activity modification, and anti-inflammatory medication are the first step.
4. Imaging if persistent
MRI identifies the disc herniation, stenosis, or slip responsible for the pain.
5. Targeted injection
An epidural steroid injection can calm nerve inflammation and aid rehabilitation.
6. Cause-specific surgery
If needed, the underlying cause is addressed, such as microdiscectomy or decompression.
7. Rehabilitation
Core strengthening and movement retraining reduce the risk of recurrence.
Frequently Asked Questions
Sciatica is a symptom, not a diagnosis. It describes pain radiating along the sciatic nerve. The important step is identifying what is compressing the nerve, most commonly a herniated disc or spinal stenosis, because treatment is directed at that underlying cause.
Most episodes improve substantially within a few weeks and resolve within a few months with conservative care. Some people have recurrent episodes. Pain that persists beyond a reasonable course of treatment, or that comes with weakness, warrants further evaluation.
For most people, a combination of staying gently active, physical therapy, and anti-inflammatory medication is effective. Epidural steroid injections help when pain is significant. Surgery is reserved for cases that do not respond or that involve progressive weakness or nerve compression, and the procedure depends on the cause.
Gentle activity is generally better than prolonged rest. Extended bed rest can slow recovery. Your care team will guide you on which movements to modify while keeping you as active as your pain allows.
Uncommonly. Most sciatica resolves without lasting effects. However, significant or progressive nerve compression can lead to persistent weakness or numbness, which is why worsening weakness or any loss of bladder or bowel control should be evaluated promptly.
When leg pain remains disabling after conservative treatment, when weakness is worsening, or when there are red-flag signs such as saddle numbness or loss of bladder or bowel control. The specific operation is chosen based on the underlying cause identified on imaging.
Specialists Who Treat Sciatica
Your care is provided by Atlantic Brain and Spine's spine team, including fellowship-trained neurosurgeons and orthopedic spine surgeons.
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