Short answer: How long sciatica lasts varies, but it often settles within a few weeks to three months, especially when it’s caused by a disc that’s still irritating the nerve. But it doesn’t clear up for everyone that quickly. In one large primary-care study, only about half of people with sciatica had improved a year later. How long sciatica lasts depends less on luck than on two things: whether the irritated nerve gets room to calm down, and whether anyone fixes the movement pattern that loaded the disc in the first place.
In about twelve years of treating sciatica at Balanced Flow, the Chicago clinic I founded, the question I hear most isn’t “what is this?” It’s “how long is this going to last?” Usually it comes from someone who has already rested, stretched, and taken something for weeks, and is starting to wonder if this is just their life now. It usually isn’t. But the answer depends on what’s driving it.
What is sciatica, and why does it hurt so much?
Sciatica isn’t a diagnosis on its own. It’s a description: pain that travels from the low back or buttock down the back of the leg, often below the knee, sometimes with numbness, tingling, or weakness. It happens when one of the nerve roots that form the sciatic nerve gets compressed or inflamed, most often by a disc in the lower back.
Nerve pain feels different from muscle pain. It burns, shoots, or zaps, and it can be worse in your calf or foot than in your back. That’s what makes it so alarming, and so exhausting to live with.
How long does sciatica usually last?
There’s no single number, but the research gives a realistic picture.
The first few weeks
Many people with a recent flare start improving within the first two to six weeks. In a classic trial of 183 people with sciatica, about two-thirds reported improvement after just two weeks, and 87% reported improvement by 12 weeks.3
Six weeks to three months
This is the window where most disc-related sciatica either clearly turns the corner or settles into a stubborn pattern. If you’re steadily improving, that’s a good sign. If you’re stuck at the same level, it’s time for a proper assessment rather than more waiting.
Beyond three months
Here’s the part that doesn’t get said enough. In a 2018 study following 609 people with sciatica and back-related leg pain in primary care, only 55% had improved at 12 months.1 The people least likely to recover were those whose leg pain had already lasted a long time, and those who believed it would last a long time. That second finding matters: expectations and fear shape recovery, which is one more reason to understand what’s actually happening.
Does a herniated disc heal on its own?
Often, yes, and this surprises people. Your body can break down and reabsorb disc material that has pushed out toward a nerve. A systematic review of conservatively treated disc herniations found that the bigger, more dramatic-looking herniations were actually the most likely to shrink: about 96% of sequestered discs and 70% of extruded discs regressed, compared with 41% of protrusions and 13% of bulges.2
So a scary MRI report doesn’t automatically mean surgery, and it doesn’t predict a long recovery. What it doesn’t tell you is why the disc got overloaded, and that’s what decides whether this happens again.
Why does sciatica keep coming back?
Most of the people I see with recurring sciatica don’t have a disc problem that appeared out of nowhere. They have a disc that’s been absorbing load it was never meant to carry, for years.
The pattern is predictable. We sit with our hips bent for hours. The glutes, which are supposed to drive hip extension when you walk, climb stairs, or lift, stop firing well. The low back steps in to do their job. The core, which sitting demands nothing of, can’t stabilize the spine. Every bend, lift, and long drive adds a little more stress to the same discs. Eventually one of them irritates a nerve.
Rest and medication can calm the nerve, and the disc may even shrink back. But if you return to the same mechanics, you’re loading the same disc the same way. That’s why so many people say “it went away, then it came back worse.”
What helps sciatica go away faster?
Stay active instead of resting in bed
Bed rest used to be standard advice. It doesn’t speed recovery. In a randomized trial, people assigned to two weeks of bed rest did no better than people who skipped bed rest and simply waited it out, at two weeks or at twelve.3 Gentle walking and staying as normally active as pain allows is the better default.
Calm the nerve with nerve glides
Nerves are built to slide as you move. When one is irritated, it gets sensitive to being stretched. Gentle nerve mobilization, sometimes called nerve flossing, moves the nerve without stretching it hard. A 2023 meta-analysis of 20 randomized trials with 877 participants found that neural mobilization significantly reduced pain and disability in people with lumbar radiculopathy, whether used alone or alongside other treatment.5 The studies varied a lot, so treat that as encouraging rather than definitive, and learn the technique from a clinician so you’re doing it at the right intensity.
Fix the mechanics that loaded the disc
This is the part that changes whether it comes back. Restore hip mobility so the low back stops bending for the hips. Retrain the glutes to drive movement. Build trunk endurance so the spine is supported during the day, not just during workouts. Change how you sit, bend, and lift. It isn’t glamorous, and it takes weeks, but it’s the difference between recovering and recovering for good.
When is surgery worth considering?
Surgery has a clear role, especially for severe or progressive weakness and for pain that doesn’t improve with a solid conservative plan. The best trial on timing compared early surgery with an initial period of conservative care in 283 people. Surgery relieved leg pain faster, but by one year the outcomes were similar, and about 95% of people in both groups reported recovery.4
So for most people without red flags, surgery is a question of speed and personal preference, not the only path to getting better. That’s a decision to make with your physician, with a clear picture of your options.
Where do injections fit in?
We’re not opposed to injections at Balanced Flow. We give several types, including regenerative options, and we use them when an injury isn’t responding to physical therapy the way it should or when we want to speed up the rebuild. For sciatica specifically, an epidural cortisone injection can quiet an inflamed nerve root for a while, which can make it easier to move and do the work. But a cortisone injection doesn’t change the mechanics that loaded the disc. I go deeper on what does and doesn’t help in how to relieve sciatica pain.
When is sciatica an emergency?
Get emergency care right away if you have new trouble controlling your bladder or bowels, numbness in the groin, inner thighs, or around the anus, or weakness in both legs. These can signal cauda equina syndrome, which needs urgent treatment. Also get seen promptly for leg weakness that’s getting worse, such as a foot that’s starting to drag, sciatica with fever, or sciatica with a history of cancer or unexplained weight loss.
The bottom line
Most sciatica improves, and many herniated discs shrink on their own. But “most” isn’t “all,” and a lot of people end up stuck or back where they started a year later. The difference usually comes down to whether the nerve was calmed and the mechanics behind it were fixed. Sciatica can also send pain into other places, including the knee, which I cover in what causes knee pain.
If you’re in the Chicago area and your sciatica isn’t moving in the right direction, or it keeps coming back, that’s exactly what we work on at Balanced Flow. We’ll find what’s loading the disc and build the plan that changes it. Book a consult and let’s get you moving again.
Frequently asked questions
Does sciatica go away?
Yes, for most people. Many cases improve within weeks to three months, and herniated disc material often shrinks on its own. But it doesn’t resolve for everyone, and it often returns if the movement pattern that overloaded the disc isn’t fixed. If yours isn’t clearly improving by six weeks, get it assessed.
How long does a sciatica flare-up last?
A flare on top of a known problem often eases over days to a couple of weeks. Frequent flares are a sign the underlying cause hasn’t been addressed.
Can sciatica last for years?
It can, especially when the nerve stays sensitized and the mechanics driving it are never corrected. Long-standing sciatica can still improve with the right plan, though it usually takes longer.
Is walking good for sciatica?
For most people, yes. Gentle walking keeps you active without the prolonged sitting that tends to aggravate disc-related sciatica. Start with short walks and build up as your leg tolerates it.
Should I stretch my hamstrings for sciatica?
Be careful. Hard hamstring stretching often stretches an irritated sciatic nerve too, which can flare symptoms. Gentle nerve glides, taught properly, are usually a better choice early on.
References
1. Konstantinou K, et al. Prognosis of sciatica and back-related leg pain in primary care: the ATLAS cohort. The Spine Journal. 2018;18(6):1030-1040. doi:10.1016/j.spinee.2017.10.071
2. Chiu CC, et al. The probability of spontaneous regression of lumbar herniated disc: a systematic review. Clinical Rehabilitation. 2015;29(2):184-195. doi:10.1177/0269215514540919
3. Vroomen PC, et al. Lack of effectiveness of bed rest for sciatica. New England Journal of Medicine. 1999;340(6):418-423. doi:10.1056/NEJM199902113400602
4. Peul WC, et al. Surgery versus prolonged conservative treatment for sciatica. New England Journal of Medicine. 2007;356(22):2245-2256. doi:10.1056/NEJMoa064039
5. Lin LH, et al. Neural Mobilization for Reducing Pain and Disability in Patients with Lumbar Radiculopathy: A Systematic Review and Meta-Analysis. Life. 2023;13(12):2255. doi:10.3390/life13122255
