Most sciatica improves without surgery. The red flags are what a consultation is really for.
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Sciatica is pain caused by irritation or compression of a nerve root in the lower back, felt travelling down the leg. The defining feature is that the leg pain is worse than the back pain, and it typically goes below the knee.
The outlook is better than most people expect. Around three-quarters of people improve substantially within about twelve weeks without any surgery, and disc material that has herniated often shrinks back on its own.
The emergency first. Sciatica in both legs, or sciatica with numbness in the saddle area, difficulty passing urine or loss of bladder or bowel control, or new loss of sexual sensation, may be cauda equina syndrome. Go to A&E immediately. Hours matter, and delay causes permanent damage.
Two things worth knowing:
Herniated disc material frequently shrinks and is reabsorbed over months — and the larger the herniation, the more likely it is to resolve. This is why most sciatica settles without surgery, and why waiting is a legitimate treatment rather than doing nothing.
Much of the pain also comes from inflammation around the nerve rather than pressure alone, which is why anti-inflammatories help and why pain often improves before any structural change.
Sciatica is a clinical diagnosis, and the history does most of the work — which suits a remote consultation, with the important exception of examining power and reflexes.
An MRI is not needed for most sciatica, because it does not change the treatment in the first weeks and disc bulges are extremely common in people with no symptoms.
It is indicated where: surgery or an injection is being considered; there is progressive or significant weakness; a red flag is present; or symptoms persist beyond about three months.
We cannot test your power, reflexes or sensation over video. Any weakness, any foot drop, or any suspicion of cauda equina needs in-person assessment — and cauda equina goes straight to A&E. We say that immediately rather than arranging anything else.
Exercise and physiotherapy help, and in many areas you can self-refer to NHS physiotherapy directly. Programmes are usually tailored to whether extension or flexion eases your symptoms, which is worth working out with a physiotherapist rather than guessing.
Same-day prescriptions, a sick note, a workplace adjustments letter, physiotherapy referral, and MRI or spinal referral where genuinely indicated.
Go to A&E immediately — do not wait — for:
This is cauda equina syndrome. Delay of hours causes permanent loss of bladder, bowel and sexual function. Go to A&E and say those words.
Seek same-day medical advice for:
Book an appointment for:
Most sciatica improves substantially within six to twelve weeks, and the herniated disc material often shrinks by itself — the larger the herniation, the more likely that is. Knowing this matters, because the pain can be severe enough to make people fear it is permanent.
Improvement is usually not linear. A useful sign of recovery is the pain "centralising" — retreating from the foot and calf back up towards the buttock and back. That is progress even if the back itself feels worse.
Close to the body, bend the knees, avoid twisting under load, and get help for anything awkward. But do not become afraid of bending — avoidance leads to weaker, stiffer backs and more trouble later.
Memorise these, because they are the only part of sciatica where timing changes the outcome:
Sciatica in both legs — numbness in the saddle area — difficulty passing urine or loss of control — loss of bowel control — new loss of sexual sensation. Any of these: A&E now.
And a foot that is starting to drag or catch needs assessing within days rather than weeks.
Most sciatica improves substantially without any intervention — the majority within six weeks, and the large majority within twelve. Staying active is the treatment, and it costs nothing.
NHS physiotherapy is free with self-referral in many areas.
NICE recommends against imaging in the first six weeks unless there are red flags or the result would change management — and that is worth taking seriously rather than treating as rationing. Disc bulges are found on MRI in large numbers of people with no symptoms at all, and an incidental finding drives fear, inactivity and sometimes surgery that was not needed.
Private MRI is heavily marketed for sciatica and is rarely the right early purchase.
What NICE also recommends against is worth knowing, because it is often prescribed: gabapentin, pregabalin, diazepam and opioids are not recommended for sciatica — the evidence does not support them and the harms are real. We do not prescribe opioids or benzodiazepines remotely.
Where a consultation earns its fee is distinguishing genuine nerve root pain from referred back pain, arranging physiotherapy, and identifying who genuinely needs imaging — progressive weakness, or pain not settling after six to twelve weeks, where injection or surgery becomes a reasonable conversation.
What is an emergency: numbness around the genitals or back passage, difficulty passing urine, or new incontinence. Cauda equina syndrome is measured in hours, not days — go to A&E.
NICE NG59, Low back pain and sciatica in over 16s, is the governing guideline. It recommends self-management and exercise as first-line, and advises against routine imaging within the first six weeks in the absence of red flags.
NG59 explicitly recommends against gabapentinoids, benzodiazepines, opioids and antiepileptics for sciatica — the basis for the position above.
NG59 supports considering an epidural corticosteroid injection for acute and severe sciatica, and referral for surgical opinion where non-surgical treatment has not improved symptoms and radiological findings correlate.
NG59 uses STarT Back stratification to match treatment intensity to risk.
National safety guidance on cauda equina syndrome — including NHS England patient safety alerts — defines the emergency features listed above and requires immediate assessment with emergency MRI.
Sciatica in both legs, numbness in the saddle area, any change in bladder or bowel control, or new loss of sexual sensation. That is cauda equina syndrome, and it is an emergency — A&E immediately, not tomorrow. Delay of hours can cause permanent damage. A foot that is beginning to drag also needs assessing within days.
Longer than you want, but it does resolve. Around three-quarters of people improve substantially within about twelve weeks without surgery, and herniated disc material frequently shrinks by itself — the bigger the herniation, the more likely. A good sign of progress is the pain retreating from the foot back up towards the buttock, even if the back feels worse for a while.
No — rest makes sciatica last longer. Keep gently moving within what you can tolerate, walk rather than sit, and change position often. Prolonged sitting and driving are usually the worst things for it. The instinct to lie still is understandable and unhelpful.
Probably not. National guidance specifically advises against gabapentin and pregabalin for sciatica — the trials show little benefit while dizziness, drowsiness, weight gain and dependence are real. They are still widely prescribed for it. It is worth reviewing, and coming off them should be done gradually rather than abruptly.
Usually not, at least at first. It does not change treatment in the early weeks, and disc bulges appear on the scans of large numbers of people with no symptoms at all. An MRI is warranted where surgery or an injection is being considered, where there is significant weakness, where there is a red flag, or where symptoms persist beyond about three months.
Most people do not. Where sciatica is severe and persistent beyond several weeks, and the MRI matches the symptoms, discectomy relieves leg pain faster than continuing to wait — though outcomes at one year are similar either way. That is the honest trade-off: surgery buys speed rather than a better final result, which is worth knowing when deciding.
No — the term is misleading. Discs do not slip. Part of the softer inner material pushes out through the tougher outer ring and irritates the nerve, both by pressing on it and by inflaming it. Nothing is out of position, and nothing needs putting back.
Sciatica is leg pain worse than back pain, usually travelling below the knee, often with pins and needles or numbness, and typically shooting when you cough or sneeze. Buttock pain that stops above the knee and aches rather than shoots is usually referred pain rather than true sciatica — a distinction that changes both the treatment and the outlook.
August 23, 2026
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If your problem turns out to be genuinely outside what we can do remotely, the doctor will tell you straight away, point you to the right service, and refund your fee in full. We would rather do that than fill twenty minutes to justify the charge.
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