Written by Rebecca Parish, BSc (Hons) Osteopathy, GOsC registered 8000 · Medically reviewed by Minal Desai, MCSP, HCPC PH63928
Most sciatica improves within a few weeks to a few months, and the majority of people recover without surgery. That is also the range the NHS gives. What is rarely said out loud is that the confident timelines you find online are not well supported by the research, so your own recovery may not follow them, and that does not mean something has gone wrong.
Sciatica is not really a diagnosis. It is the name for pain travelling along the sciatic nerve, usually because a disc or nearby structure in the lower back is irritating a nerve root. That is why the pain is felt down the leg while the problem sits in the spine.
Before anything else, check the symptoms in the next section, which mean going to A&E rather than waiting. If none apply, keep moving as normally as you can, avoid long spells sitting or lying still, and get assessed if the pain has not begun to ease after a few weeks.
Below we cover the urgent symptoms first, then realistic timelines, why the published figures are shakier than they look, how to tell sciatica from what mimics it, and getting back to work.
First, the symptoms that mean you should not wait
Some symptoms need emergency assessment rather than a wait-and-see approach, because they suggest pressure on the nerves controlling the bladder, bowel and both legs.
According to the NHS, go to A&E or call 999 if you:
- have sciatica on both sides
- have weakness or numbness in both legs that is severe or getting worse
- have numbness around or under your genitals, or around your bottom
- find it hard to start peeing, cannot pee, or cannot control when you pee, and this is not normal for you
- do not notice when you need to poo, or cannot control when you poo, and this is not normal for you
These can indicate a serious problem needing hospital treatment quickly. Worth stating plainly, because bilateral leg symptoms are among the most searched sciatica questions online, and most articles treat that question as a curiosity rather than an emergency.
How long sciatica actually lasts
Most sciatica settles within a few weeks to a few months. Symptoms beyond three months are called chronic, though the label says little.
A useful marker of progress is not whether the pain has gone, but where it sits. Leg pain that gradually retreats towards the buttock and lower back, even while the back still aches, is generally viewed as movement in the right direction. Pain spreading further down the leg, or new weakness, is worth reporting promptly. Recovery is rarely linear, so the trend across a fortnight tells you more than any single day.
Why the timelines you have read are less reliable than they look
Published recovery timelines sound precise, but the evidence is weak. A systematic review found standard predictors do not reliably forecast who recovers quickly.
That review of prognostic factors in non-surgically treated sciatica examined the factors clinicians and articles routinely lean on, and reported “conflicting but mainly negative results” for baseline pain severity, neurological deficit, nerve root tension signs, duration of symptoms and radiological findings. Age, sex, smoking, previous history and heaviness of work did not appear to influence outcome either.
Two things follow. Scan findings are a poor guide to your timeline, so a disc bulge on an MRI will not tell you whether you improve in three weeks or three months. And a slow start is not a forecast: because initial severity is not a dependable predictor, a bad first fortnight does not mean a long recovery.
Anyone giving you a precise number is offering an average, not a prediction about you.
Is it definitely sciatica?
Not all leg pain is sciatica. Hip problems, gluteal tendon pain and referred pain from the lower back can feel similar.
True sciatica follows the nerve, usually travelling below the knee and often into the foot, and frequently brings pins and needles, numbness or weakness rather than pain alone. Pain stopping at the buttock or upper thigh, with no neurological symptoms, is more often referred from the joints or soft tissues of the lower back.
Groin pain is worth singling out. The sciatic nerve does not supply the groin, so groin pain usually points towards the hip joint or upper lumbar spine instead. Knee pain sits in a similar category and can be referred from the hip as readily as from the back.
The distinction changes the assessment, the treatment and what you should expect, which is why an examination is worth more than matching symptoms to a list. Our sciatica treatment and back pain pages set out how we assess it.
Getting back to work, and back to sitting
Returning to work usually helps recovery rather than delaying it. Standing and desk roles need different plans, and neither requires being pain free.
This is what people actually worry about, and it is rarely addressed. On your feet all shift, aim for variety rather than endurance: change position often, take any chance to sit briefly, and avoid standing rigidly still to protect the leg, which tends to make things stiffer.
If you sit for work, the problem is duration rather than posture. Getting up every twenty to thirty minutes matters more than the perfect chair position. Sitting is often the most provocative position early on, so a phased return with shorter days usually beats a full return with heroic sitting.
Graded strengthening once the acute pain settles helps reduce the chance of recurrence, which is where Clinical Pilates earns its place. Arrange a phased return with your employer early, as it is far easier to agree before you go back than after a bad first week.
Common questions
Often, yes. Most cases settle over weeks to a few months without surgery or injections, particularly when you stay active rather than resting completely. Seek assessment if the pain is not easing after a few weeks, is worsening, or you develop weakness. The emergency symptoms listed above need immediate attention.
Hip joint arthritis, gluteal tendinopathy, referred pain from the lumbar joints and, less commonly, pelvic or vascular problems can all produce leg pain resembling sciatica. The usual clue is distribution: genuine sciatica tends to travel below the knee and often brings pins and needles, numbness or weakness rather than pain alone.
Knee pain can occur when the irritated nerve root refers symptoms down the leg, though pain stopping at the knee is often referred from the hip instead. Groin pain is rarely sciatica, because the sciatic nerve does not supply that area. It more often points towards the hip joint or upper lumbar spine.
Symptoms in both legs at once should be treated as urgent, not as ordinary sciatica. Bilateral leg pain, numbness or weakness appears on the NHS list of symptoms requiring A&E attention, particularly alongside any change in bladder or bowel control. Do not wait to see whether it settles.
The most reliable sign is leg pain retreating upwards towards the buttock and back, even if back pain persists or briefly feels worse. Other positive signs include longer pain-free stretches, easier sitting and standing tolerance, and returning to normal activities. Recovery is rarely linear, so occasional flare-ups do not mean you have gone backwards.
Walking is usually better tolerated than prolonged sitting, which tends to increase pressure through the lower back. Gentle, regular walking within comfort is generally encouraged. That said, the aim is variety rather than any single correct position, so alternating between sitting, standing and walking usually beats committing to one of them.
About the author
Rebecca Parish is a GOsC-registered osteopath (registration 8000) with over 15 years of experience and a BSc (Hons) in Osteopathy from Oxford Brookes University. She specialises in spinal injuries and pairs hands-on treatment with exercise prescription as an advanced Pilates instructor. She sees patients for osteopathy in Maidenhead, serving Maidenhead, Reading and Wokingham.
Not sure how long yours should be taking?
If sciatica is holding you back, the team at Health Grove Clinic is here to help. Book an appointment at our Maidenhead clinic, or contact us and we’ll be happy to advise whether physiotherapy or osteopathy is right for you.