What Sciatica Feels Like and Why

Sciatica typically presents as a sharp, burning, or electric-like pain that radiates from the lower back down one leg, often affecting the back of the thigh, calf, or foot. The discomfort can range from a dull ache to sudden, stabbing sensations, and it may worsen with movement, sitting, or bending. Many people describe a tingling or numbness that spreads down the leg, sometimes accompanied by weakness in the affected foot or toes. The pain is usually localized to one side of the body, though both legs can be affected in rare cases.

The condition arises when the sciatic nerve— the body’s longest nerve— becomes irritated or compressed. Common causes include herniated discs, which press on the nerve roots, or spinal stenosis, where narrowed spaces in the spine pinch the nerve. Less frequently, issues like piriformis syndrome (tightened muscles around the hip) or trauma can contribute. Prolonged sitting, poor posture, or repetitive motions may exacerbate symptoms.

While sciatica often resolves on its own within weeks, persistent or worsening pain may signal a need for medical evaluation. Understanding the root cause helps guide treatment, whether through rest, physical therapy, or addressing underlying spinal issues.