Sciatic nerve pain typically feels like a sharp, shooting sensation or a burning, electric-shock-like jolt that travels from your lower back or buttock down the back of one leg. It can reach as far as your calf or the sole of your foot. Some people also feel tingling, pins and needles, or patches of numbness along the same path. The pain almost always affects only one side of the body.
How the Pain Actually Feels
People describe sciatica in a few distinct ways, and you may experience more than one of these sensations at the same time. The most common is a sharp, shooting pain that starts in the buttock or lower back and radiates down the leg, sometimes in a sudden flash that catches you off guard. Others describe it as a deep burning feeling or a sensation similar to an electric shock running along the leg. Between flare-ups, you might notice a dull ache or a heavy, tired feeling in the affected leg.
Numbness and tingling are just as characteristic as pain. You might feel pins and needles in your calf, the sole of your foot, or the back of your thigh. In more pronounced cases, a section of your leg or foot may feel partly numb, almost like it’s “asleep.” Some people also notice weakness, making it harder to push off when walking or to lift the foot normally.
Where You’ll Feel It
The sciatic nerve is the longest nerve in the body. It runs from the lower spine through the buttock, down the back of the thigh, and branches into the lower leg and foot. That entire path is fair game for symptoms. The nerve provides sensation to the back of the thigh, the outer and back part of the lower leg, and the sole of the foot, so pain, tingling, or numbness can show up in any of those areas.
Most people feel it first in the buttock or deep in the hip, then notice it traveling downward. In many cases the pain reaches below the knee and into the calf or foot. Occasionally people feel it only in the buttock and upper thigh, which can point to a different source of compression (more on that below). Lower back pain may or may not be part of the picture; some people have intense leg symptoms with very little back pain at all.
What Makes It Worse
Certain movements and positions are reliable triggers. Coughing, sneezing, and bending forward all increase pressure on the spinal discs, which can press harder on the nerve root and send a jolt of pain down the leg. Lifting your legs while lying on your back can reproduce the pain for the same reason. Prolonged sitting is another common aggravator, especially on hard surfaces, because it compresses the nerve pathway through the buttock. Many people find that standing up after sitting for a while produces a sharp flare before settling back to a dull ache.
What Causes the Nerve to Hurt
Sciatic pain originates when the nerve or its roots get compressed or irritated. The most frequent cause is a herniated (slipped) disc in the lower spine, where the soft center of a spinal disc bulges out and presses on a nerve root. Bone spurs from arthritis or narrowing of the spinal canal (spinal stenosis) can do the same thing.
There is also a muscular cause worth knowing about. Piriformis syndrome occurs when the piriformis muscle, a small muscle deep in the buttock, tightens or spasms and squeezes the sciatic nerve from outside the spine. The symptoms overlap with spinal sciatica but differ in a few ways. With piriformis syndrome, the pain usually starts deep in the buttock and tends to stay in the buttock and upper thigh rather than traveling below the knee. It gets worse with hip rotation activities like climbing stairs, getting out of a car, or sitting for long stretches. Spinal sciatica, by contrast, more commonly radiates all the way down into the calf and foot and tends to worsen with spinal movements like bending forward, prolonged standing, or sneezing.
How Long It Typically Lasts
Most episodes of sciatica improve significantly within four to six weeks with conservative care, meaning rest modifications, gentle movement, over-the-counter pain relief, and sometimes physical therapy. Research published in the British Medical Journal found that roughly 60% of patients recover within six weeks without surgery. Some cases take longer, particularly when the underlying cause is a large disc herniation or significant spinal narrowing, but outright chronic sciatica lasting many months is the exception rather than the rule.
During recovery, pain intensity often fluctuates. You might have a few good days followed by a flare, especially if you sit too long or lift something awkwardly. That inconsistency is normal and doesn’t necessarily mean the condition is getting worse. Gradual improvement in how far the pain travels down your leg is actually a positive sign. Clinicians call this “centralization,” where symptoms retreat from the foot toward the buttock over time, indicating the nerve is decompressing.
Symptoms That Need Immediate Attention
In rare cases, severe nerve compression in the lower spine can damage a bundle of nerves called the cauda equina. This is a medical emergency. The warning signs are distinct from ordinary sciatica: sudden numbness or unusual sensations in the inner thighs, groin, or buttock area (sometimes called “saddle” numbness because it covers the area that would contact a saddle), difficulty urinating or inability to control your bladder, loss of bowel control, and rapidly worsening leg weakness or difficulty walking. If you notice any combination of these symptoms alongside back or leg pain, go to an emergency room. Permanent nerve damage can result if treatment is delayed.