Sciatica Alternatives: Conditions with Similar Pain & Symptoms

Differential Diagnosis of Sciatica-Like Pain

Sciatica = radiculopathy along sciatic nerve (L4-S3). Many conditions mimic it.

Spinal Sources

• Lumbar disc herniation: Direct root compression (classic sciatica).
• Spinal stenosis: Central/foraminal narrowing → neurogenic claudication (pain with walking, relieved by sitting/bending).
• Spondylolisthesis: Vertebral slip → root stretch/compression.
• Facet arthropathy: Referred pain to buttock/thigh (pseudoradiculopathy).
• Synovial cyst: Facet joint cyst compressing root.

Non-Spinal Mimics

• Piriformis syndrome: Sciatic nerve compression at sciatic notch. Pain sitting, FAIR test positive. Controversial diagnosis.
• Sacroiliac joint dysfunction: Buttock pain, referral to posterior thigh.
• Hip pathology: OA, labral tear → groin/buttock pain, limited internal rotation.
• Diabetic amyotrophy: Lumbosacral plexopathy; severe pain, weakness, weight loss.
• Vascular: Iliac artery occlusion (leriche), popliteal aneurysm.
• Gynecologic: Endometriosis, ovarian cyst → cyclical sciatic pain.
• Malignancy: Metastasis to spine/pelvis, nerve sheath tumors.

Diagnostic Clues

Feature	True Radiculopathy	Mimics
Dermatomal pattern	Yes	Often non-dermatomal
Neurologic deficits	Weakness, reflex loss, sensory loss	Variable
Straight leg raise	Positive (reproduces leg pain)	Often negative
Imaging	Correlates with symptoms	May be normal or show other pathology

MRI + EMG/NCS + clinical correlation = accurate diagnosis.