Sciatica feels like a sharp, burning, or shooting pain that travels from the lower back or buttock down the back of one leg. It can range from a dull ache to something closer to an electric jolt, and many people experience numbness, tingling, or weakness in the affected leg alongside the pain. With a lifetime incidence estimated between 13% and 40%, it’s one of the most common nerve pain conditions, and the sensation is distinct enough that most people recognize something is different from ordinary back or muscle pain.
Where the Pain Travels
The sciatic nerve is the longest nerve in the body. It forms from nerve roots in the lower spine, exits through the pelvis into the buttock, and runs down the back of the thigh. Near the back of the knee, it splits into two branches that continue into the lower leg, heel, and foot. This path explains why sciatica rarely stays in one spot. Pain typically starts in the lower back or deep in the buttock and radiates down the back or outside of the leg, sometimes reaching all the way to the sole of the foot.
Most people feel it on only one side. The pain doesn’t always follow the full length of the nerve. You might feel a burning ache in the buttock and a sharp sensation in the calf, with nothing in between. One part of the leg can be in pain while another part feels numb, which can be disorienting if you’ve never experienced nerve pain before.
How It Feels Different From Muscle Pain
Muscle pain tends to be localized, achy, and tied to a specific spot you can press on. Sciatica is different. The pain often feels like it’s moving, shooting, or radiating along a line down the leg. People commonly describe it as burning, searing, or like a hot wire running through the leg. Others feel more of a deep, relentless ache in the buttock combined with sharp jolts that travel downward with certain movements.
Tingling and numbness are hallmarks that separate sciatica from a pulled muscle. You might feel pins and needles in your calf or a patch of skin on your outer leg that feels muted, like it’s partially asleep. In more significant cases, the leg or foot can feel genuinely weak, making it harder to push off the ground while walking or lift the front of the foot.
What Makes It Worse
Sciatica is notoriously reactive to body position and movement. Sitting for long stretches is one of the most common triggers because it puts sustained pressure on the lower back and hips right where the sciatic nerve begins. The hamstrings and hip flexors tighten up during prolonged sitting, which can further compress or irritate the nerve.
Bending forward, twisting, and lifting with poor form are among the fastest ways to provoke a flare. Even small, involuntary actions can set it off. Sneezing, coughing, or straining on the toilet all briefly spike pressure inside the spinal canal, and people with active sciatica often feel a sudden shooting pain down the leg during these moments. Sleeping on your stomach can also strain the lower back enough to keep symptoms going overnight.
Slouching or standing with rounded shoulders and an unsupported lower back increases pressure on the spinal discs and nearby nerves. Many people notice the pain is worst when transitioning between positions, like standing up from a chair or getting out of bed in the morning.
Numbness and Weakness
Not everyone with sciatica has pain as their primary symptom. Some people notice numbness or tingling more than actual pain. The affected areas depend on which nerve root is compressed. You might feel numbness along the outer calf, the top of the foot, or the sole. Tingling can come and go or remain constant, and it sometimes feels like the skin is crawling or buzzing.
Muscle weakness is a more concerning sign. It can show up as difficulty lifting the foot (causing it to drag or slap the ground while walking), trouble rising onto your toes, or a general feeling that the leg gives way. Sudden onset of significant weakness warrants prompt medical evaluation, because it can indicate more serious nerve compression.
How Long It Typically Lasts
An acute episode of sciatica usually lasts one to two weeks and resolves on its own within a few weeks in most cases. The sharp, shooting quality of the pain often fades first, with a duller ache and occasional tingling lingering somewhat longer. For the majority of people, conservative approaches like staying gently active, adjusting posture, and managing pain are enough to get through an episode.
Some cases persist longer, particularly when caused by a large disc herniation or spinal narrowing. Chronic sciatica, lasting three months or more, affects a smaller subset of people and may require more targeted intervention.
Signs That Need Immediate Attention
A rare but serious condition called cauda equina syndrome can mimic sciatica at first but progresses quickly. The warning signs include loss of bladder control or the inability to sense when your bladder is full, bowel incontinence, and numbness in the groin, inner thighs, or buttock area (sometimes called “saddle” numbness because it affects the region that would contact a saddle). Weakness that rapidly worsens in one or both legs also falls into this category.
This condition requires treatment within 48 hours of symptom onset to preserve nerve function. If you develop any combination of these symptoms alongside leg pain, it’s a medical emergency rather than routine sciatica.