Sciatic Nerve Pain: Causes and Effective Treatments

Sciatic pain (sciatica) is pain that radiates along the path of the sciatic nerve, from the lower back to the foot. It can be disabling, but there is effective treatment.

What is the Sciatic Nerve?

The sciatic nerve is the largest and longest nerve in the human body. It originates in the lumbar region (L4-S3), passes through the glutes, descends down the back of the thigh, and branches below the knee, going down to the feet.

Main Causes of Sciatica

Lumbar disc herniation: Most common cause (90% of cases)
Spinal stenosis: Narrowing of the canal where nerves pass
Piriformis syndrome: Nerve compression by the piriformis muscle
Spondylolisthesis: Slippage of one vertebra over another
Facet arthrosis: Wear and tear of spine joints
Tumor or infection: Rarer causes

Symptoms of Sciatica

Pain radiating from the lower back to the buttocks, thigh, and leg
Pain usually unilateral (one side only)
Burning sensation or electric shock
Tingling or numbness in the leg or foot
Muscle weakness in the affected leg
Worsening when sitting, coughing, or sneezing

Treatments at Intrador

Lumbar Epidural Block

Infiltration of anesthetic and anti-inflammatory in the epidural space, close to the compressed nerve root. Guided by ultrasound or fluoroscopy.

Sciatic Nerve Block

Direct block of the sciatic nerve, especially useful in piriformis syndrome.

Medical Acupuncture

Effective for pain relief and muscle relaxation, with robust scientific evidence.

Neuropathic Pain Medication

Specialized prescription of medications that act on neuropathic pain.

Schedule your Evaluation

Do not live with sciatic pain. Schedule an evaluation with a pain specialist doctor.

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Clinical Review

Dr. Cristina Heinrich

Physiatrist | CRM/PE 15837 | RQE 5581
Specialist in Physical Medicine and Rehabilitation

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Clinically Reviewed by:

Dra. Cristina B. Heinrich

Neurocirurgia, Medicina da Dor, Acupuntura

CRM-PE 18839 | RQE 7825, 11500, 17697

This content is informative and does not replace individual medical evaluation.

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Neurosurgeon specializing in Pain and Acupuncture. Her triple qualification allows for an integrated and complete approach in the treatment of spinal and nervous system conditions.

Note: This content is for educational and informational purposes only. The information is based on scientific evidence and the clinical practice of the Intrador team, but it does not replace individualized medical evaluation. Conduct, indications, and treatments must be defined after medical consultation.

Clinical reviewer: Dr. Helio Widson Alves Pinheiro · Pain Medicine | Acupuncture · CRM/PE 21167 | RQE 2217, 2808

Published on: January 17, 2026

Reviewed on: January 29, 2026

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