Sciatica feels like a sharp, shooting pain that travels from your lower back down through your buttock and into one leg. Many people describe it as a burning sensation or an electric shock that follows a distinct path, unlike the dull ache of a pulled muscle. The pain typically affects only one side of the body, and it often comes with numbness, tingling, or weakness in the affected leg.
The Signature Sensations
What sets sciatica apart from ordinary back pain is the quality of the pain itself. People most commonly describe three distinct feelings: a sharp, shooting jolt that runs down the leg, a deep burning sensation, and an electric shock-like zap. These can alternate or overlap. You might feel a constant burn in your buttock with occasional lightning bolts shooting to your calf.
Alongside the pain, you may notice pins-and-needles tingling, patches of numbness, or a strange heaviness in your leg. Some people find that their foot feels “asleep” or that their leg gives out unexpectedly when walking. These sensations happen because the sciatic nerve, the longest nerve in your body, is being compressed or irritated near the spine. The nerve runs from the lower back through the hip, down the back of the thigh, and into the foot, so symptoms can show up anywhere along that path.
Where You Feel It
Sciatica usually starts in the lower back or deep in the buttock. From there, it radiates down the back of the thigh, sometimes reaching the calf, the sole of the foot, or even individual toes. The exact path depends on which nerve root is being pinched. Some people feel it mostly in the buttock and outer thigh, while others feel it all the way to the ankle.
One helpful clue: if your pain stays localized in the buttock and gets worse when you sit or squat but doesn’t travel much past the upper thigh, you may be dealing with piriformis syndrome rather than true sciatica. Piriformis syndrome involves a muscle in the buttock irritating the sciatic nerve, whereas sciatica stems from a problem in the lumbar spine itself, like a herniated disc or bone spur compressing the nerve root. True sciatica tends to send pain further down the leg, sometimes all the way to the foot.
What Makes It Worse
Sciatica has a frustrating habit of flaring up during everyday activities. Sitting for long periods is one of the most common triggers, which is why many people first notice their symptoms during a long drive or a day at a desk. The pain can spike when you cough, sneeze, or laugh, because these actions briefly increase pressure inside the spinal canal.
Bending forward, lifting something heavy, or even raising your legs while lying on your back can intensify symptoms. This is actually how doctors test for sciatica: they raise your straightened leg while you lie flat. If familiar pain shoots down your leg between about 30 and 70 degrees of elevation, it strongly suggests a compressed nerve root in the lower spine. That test is about 91% sensitive for detecting disc herniation, meaning it catches the vast majority of cases.
How It Differs From Regular Back Pain
Ordinary muscle strain in the lower back produces a dull, achy soreness that stays in the back. It might spread across both sides and feel stiff, especially in the morning. Sciatica is different in almost every way. It shoots, burns, or zaps. It travels into the leg. It typically hits one side. And it brings neurological symptoms like numbness, tingling, and weakness that a muscle strain does not.
If you’re unsure which you’re dealing with, pay attention to the trajectory. Pain that stays in the lower back, even if it’s severe, is more likely muscular. Pain that starts in the back or buttock and follows a clear line down the leg, especially with tingling or numbness, points toward sciatica.
How Long It Typically Lasts
An acute sciatica episode usually lasts one to two weeks and resolves on its own within a few weeks. In most cases, the pain clears up completely without surgery. That said, the experience varies widely. Some people have a single episode that never returns, while others deal with recurring flare-ups over months or years.
During the acute phase, the pain can be intense enough to disrupt sleep, make sitting unbearable, and limit your ability to walk comfortably. As the episode resolves, the sharp shooting pain tends to fade first, while residual numbness or mild tingling may linger a bit longer. Gentle movement, avoiding prolonged sitting, and staying as active as your pain allows generally support faster recovery.
Symptoms That Need Emergency Attention
In rare cases, severe nerve compression in the lower spine can cause a condition called cauda equina syndrome, which requires immediate emergency care. The warning signs include sudden difficulty urinating or having a bowel movement, loss of bladder or bowel control, and numbness spreading across both inner thighs, the buttocks, or the groin area (sometimes called “saddle numbness” because it affects the areas that would contact a saddle). Progressive weakness in both legs or difficulty walking also warrants an emergency room visit. This condition can cause permanent damage if not treated quickly, so these symptoms should never be waited out.