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Sciatica: what helps, and when to worry

By the Calm Joints physio team · Updated November 3, 2026 · 9 min read

Illustration of a person walking a level park path, a short walk that helps sciatica more than bed rest

Sciatica is pain that travels from the lower back or buttock down the leg, often past the knee, because the sciatic nerve or a nerve root that feeds it is irritated or compressed.^[1]^[4] The NHS says it usually settles in a few weeks to a few months, though it can last longer and can return.^[1] Staying active, changing position often, and a wrapped heat pack are the first steps health bodies describe.^[1]^[6] A small group of symptoms, including new trouble with bladder or bowel control, numbness in the saddle area, or a leg that is getting weaker, need same-day emergency care.^[5]

What is sciatica, and what is it not?

NICE Clinical Knowledge Summaries describe the pattern that should raise suspicion of sciatica: one-sided leg pain radiating below the knee to the foot or toes, sometimes burning, heavy, or tight, and often worse with bending, twisting, or coughing.^[4] The sciatic nerve is the long nerve that runs from the lower back through the buttock and down the back of the leg into the foot. Irritation is often from a disc that is pressing on a nerve root, but the label is a symptom pattern, not a diagnosis of one specific tissue.

It is not the same as ordinary low back ache that stays in the back. If your pain is mostly from long sitting and does not travel below the knee, lower back pain from sitting is the closer match. Pain on the outer hip that does not run past the knee is more often a tendon or bursa pattern, covered in hip pain on the outside.

A flare after a long drive, a shovelling session, or the first icy week of a Canadian winter is a common story. The nerve does not like being held in one position. That is a reason to move, not a reason to assume the disc has “slipped” in a way that rest will put back.

How long does sciatica last?

The NHS is plain about the usual course: sciatica usually gets better in a few weeks to a few months, it can last longer, and there is a chance it will happen again.^[1] NICE advises people without red flags to stay as active as they can, resume normal activities and work as soon as possible, and seek follow-up if symptoms are worsening, if severe pain has not eased within a week, if symptoms persist beyond about two weeks, or if new symptoms appear.^[4]^[6]

That timeline is a guide, not a promise. Some people are much better in days. Some still have leg pain at three months. A virtual physio visit is useful when the pain is limiting walking, sleep, or work, even if you are still inside that window, because the job is to keep you moving safely while it settles.

Should I rest in bed?

No, not as a treatment. NICE Clinical Knowledge Summaries say prolonged bed rest is not recommended, and that a long spell in the same posture should be avoided.^[6] The NHS says not to sit or lie down for long periods.^[1] Moving can hurt. That does not mean the movement is harmful. NICE notes that a modest increase in pain when you resume activity does not mean damage has occurred.^[3]

Short walks, standing to take a call, and lying down only to sleep are closer to the advice than a week on the couch. If walking makes the leg pain shoot further or the foot starts to drag, stop and get assessed. Comfortable ache that eases once you are warm is a different signal.

What should I do today?

For self-care, the NHS suggests carrying on with normal activities as much as you can, starting gentle exercise as soon as you can, and holding a heat pack on the painful area. A pharmacist can advise on pain relief. The NHS notes that paracetamol is unlikely to help sciatica, and that it is not clear how much non-steroidal anti-inflammatory drugs such as ibuprofen help.^[1]

NICE is careful about medicines. The 2020 recommendations say not to offer gabapentinoids, other anti-seizure medicines, oral corticosteroids, or benzodiazepines for sciatica, because there is no overall evidence of benefit and there is evidence of harm. Do not offer opioids for chronic sciatica. If a non-steroidal anti-inflammatory is considered, use the lowest effective dose for the shortest time, with the gut, liver, and kidney risks in mind. Those are decisions for a prescriber, not a blog.^[3]

NICE also advises against several passive treatments for sciatica: traction, acupuncture, ultrasound, TENS, and interferential therapy, and against belts, corsets, foot orthotics, and rocker-sole shoes as treatments for this pain.^[3] A lumbar brace can feel supportive for an hour. It is not a plan.

If you already sit most of the day, the same posture rules as desk back pain still apply: change position before the leg starts to buzz, and keep the screen at eye height so you are not folded forward for hours.

If the leg pain is running your week, book a virtual visit with a registered physiotherapist at calmjoints.org. You do not need to wait until home care has “failed.”

What the research says

Guideline advice and trial evidence are not the same thing, and it helps to see both.

NICE’s guideline on low back pain and sciatica in people 16 and over recommends exercise programmes, and considers manual therapy (spinal manipulation, mobilisation, or soft-tissue techniques such as massage) only as part of a package that includes exercise. It promotes return to work and usual activity. The pharmacological section, updated in 2020, is the source for the medicine limits above.^[3]

A 2023 systematic review and meta-analysis in the European Spine Journal pooled 18 trials and 2,699 people with clinically diagnosed sciatica. For pain and disability, physiotherapy interventions as a group were not clearly better than control treatments in the short, medium, or long term. A subgroup that compared physiotherapy with minimal intervention favoured physiotherapy for pain at longer follow-up, but confidence intervals were wide and heterogeneity was high. The authors concluded that, based on mostly high or unclear risk of bias and highly varied trials, there is inadequate evidence to make clinical recommendations on the effectiveness of physiotherapy interventions for sciatica. Many trials did not use contemporary physiotherapy.^[7] That is a reason for honesty, not a reason to do nothing. Staying active is still the advice from NICE and the NHS. A physio’s job in this gap is to help you keep walking, sleeping, and working, and to spot the people who need a different pathway.

On virtual care, a 2021 rapid review in the Archives of Physical Medicine and Rehabilitation, led from Ontario Tech University, found low- to moderate-quality evidence that synchronous telehealth (video or phone), alone or with some in-person care, leads to similar outcomes to in-person care for non-specific low back pain and for hip or knee osteoarthritis in adults. Sciatica was not the focus of that review. It supports video visits for related spine and joint pain. It does not prove that a video visit outperforms hands-on care for nerve-root pain.^[8]

Choosing Wisely Canada recommends against imaging for lower back pain unless red flags are present. An early scan often finds common, benign changes that do not explain the leg pain and can raise worry without changing the first steps.^[9]

Try this today

These are general habits drawn from NHS and NICE self-care advice, not a personal program. Stop if pain travels further down the leg, if the foot feels weaker, or if you feel unwell.

1. Short walks, repeated

Put on supportive shoes. Walk on level ground for 5 to 10 minutes, at a pace where you can still talk. If the leg pain eases or stays the same after you stop, that dose was tolerable. If it climbs for more than a few minutes after you sit down, shorten the next walk. On ice, use a cleared path or a mall loop. A slip is not worth the extra steps.

2. Change position before the buzz starts

Set a 30-minute reminder. Stand, walk to the kitchen, or lie on your side with a pillow between the knees for two minutes. NICE specifically warns against long spells in one posture. The goal is circulation and a new joint angle, not a stretch you hold until it burns.

3. Heat on the back or buttock, not on numb skin

Use a wheat bag or heat pack wrapped in a towel for about 10 to 15 minutes. The NHS suggests heat packs on the painful areas. Check the skin. Do not sleep on a heat pack, and do not use heat if the skin is broken or if you cannot feel temperature well.

4. One gentle back movement, only if the leg allows

Lie on your back with both knees bent and feet on the floor. Gently flatten the lower back into the bed by drawing the belly in a little, hold for a breath, and release. Five slow repeats. If the pain moves closer to the back and the leg eases, that direction is often worth keeping. If the pain moves further into the foot, stop.

Physio tip: None of these replaces a program matched to your back and leg. They are safe starters a physio can progress once they have seen how you walk and which positions settle the nerve.

When to see a physio

See a physiotherapist if leg pain is still limiting walking, sleep, or work after a week or two of staying active, if you are afraid to move, or if you want a plan that fits your job and your building. Many extended health plans in Canada cover physiotherapy, including virtual visits. Provincial coverage varies, so check your plan rather than assuming a public clinic will see you quickly.

Calm Joints visits are virtual, with registered physiotherapists, for people across Canada. Book a virtual visit at calmjoints.org. A visit is a conversation and a movement check on video. It is not a scan, and it is not a promise that the nerve will be quiet by Friday.

Get urgent care, and do not wait for a physio appointment, if:^[5]

New bladder or bowel trouble, or numbness in the saddle area between the legs.
Leg pain that has become both-sided, progressive weakness, or trouble walking because the leg will not hold you.
Spinal pain with fever, recent unexplained weight loss, a history of cancer, or if you are immunocompromised.

Those patterns can overlap with cauda equina syndrome, infection, or other serious causes. NICE says suspected cauda equina syndrome needs emergency referral, usually through an emergency department that can arrange an urgent scan.^[5] In an emergency, call 911.

Want a plan built for your back and leg?

Book a virtual visit with a registered Calm Joints physiotherapist. We’ll check red flags, how you walk, and a short plan that keeps you moving while the nerve settles.

Book a visit

Want tips like this in your inbox? Join “Get tips for sore joints” on calmjoints.org. It is education, not a substitute for a visit.

Frequently asked questions

Is sciatica the same as a slipped disc?

Not always. A disc pressing on a nerve root is a common cause of the leg-pain pattern NICE describes. Other tissues can irritate the nerve. The useful question is whether the pain travels below the knee, and whether any red flags are present, not whether a disc has “slipped.” ^[4]

Should I get an MRI for sciatica?

Choosing Wisely Canada says not to image lower back pain unless red flags are present. NICE reserves urgent imaging pathways for suspected cauda equina syndrome, infection, cancer, and progressive neurological loss. An early scan is not the first step for ordinary one-sided leg pain. ^[3]^[9]

Do sciatica exercises work?

The NHS encourages regular exercise and early gentle movement. A 2023 review of physiotherapy trials for sciatica found the evidence too varied and too biased to recommend one specific treatment over another. Use movement that keeps you walking. Stop if the pain travels further down the leg. ^[1]^[2]^[7]

Can I work with sciatica?

NICE says to promote return to work, with adjustments if needed. Short walks, a sit-stand option, and avoiding long awkward lifts are the usual changes. Tell your employer what you can still do. Bed rest is not the advice. ^[3]^[6]

Is virtual physio useful for sciatica?

A video visit can cover the history, red flags, walking, and a home plan. Research on synchronous telehealth is stronger for non-specific low back pain than for sciatica itself. Hands-on tests and a neurological exam in person still matter if weakness or numbness is progressing. ^[8]

When is sciatica an emergency?

New bladder or bowel changes, saddle numbness, both legs involved, or a leg that is getting weaker need same-day emergency care. Do not book a routine visit for those symptoms. ^[5]

Sources

Keep reading

This article is for education. It is not personal medical advice, a diagnosis, or a treatment plan for you. A physiotherapist or physician who can assess you is the right person to decide what is safe for your back and leg. In an emergency, call 911.