You get up from the sofa like any other afternoon. And then it happens: an electric lash is born in the buttock and shoots down the back of the leg, as if someone had flicked a switch you didn’t know you had. You stop halfway, one hand on your back, holding your breath. This isn’t any old muscle strain. It’s that pain so many people describe with the same word, almost always in a low voice and with a frightened face: sciatica.
If you’ve come here looking for answers, the first thing is good to know: most cases of sciatica get better, and they do so without an operating theatre. But to recover well it’s worth understanding what’s really happening to you, which signals you mustn’t ignore and what to do this very day. Let’s take it step by step.
What is sciatica (and why isn’t it a diagnosis)?
Here’s the first surprise: sciatica isn’t a disease. It’s a symptom. It’s the name we give to the pain that travels along the path of the sciatic nerve, the longest and thickest nerve in your whole body — in some stretches, almost as wide as your little finger. That nerve arises from the junction of several nerve roots in the lumbar and sacral region (levels L4, L5, S1, S2 and S3), runs through the buttock and descends down the back of each leg to the foot.
When something irritates or compresses that nerve or its roots, the characteristic pain appears. That’s why saying “I have sciatica” is like saying “I have a fever”: it describes what you feel, not the cause. And the cause is precisely what needs to be found out in order to treat you well. That difference, which seems like a nuance, changes everything: you don’t treat sciatica “in general”, you treat the specific problem causing it.
Did you know…? The sciatic nerve is so long that it connects your lower back with the sole of your foot. That’s why a problem in the lower back can make you feel tingling in your toes, even though the foot is perfectly healthy.
Why does it appear? The most common causes
🎬 Watch
In the vast majority of cases, sciatica comes from the lumbar spine. The star cause is the herniated disc: one of the discs that cushion your vertebrae shifts or tears, and its contents press on a nerve root. It’s estimated that around 85% of sciatica cases are linked to a disc problem, especially between the ages of 30 and 50.
But it isn’t the only explanation. These are the most common ones:
| Cause | Who it usually affects | Typical clue |
|---|---|---|
| Lumbar herniated disc | Adults aged 30–50 | Pain that worsens on sitting, coughing or sneezing |
| Lumbar spinal stenosis | Older people | Discomfort when walking or standing for a while, relief on leaning forward |
| Spondylolisthesis | Variable | One vertebra “slips” over another and pinches the nerve |
| Piriformis syndrome | Less frequent | A deep muscle in the buttock squeezes the nerve |
The good news is that, whatever the cause, the recovery path is fairly similar in the most common cases. The bad — let’s be honest — is that none of them sorts itself out overnight. It asks for some patience and, above all, moving well.
What does it feel like? Symptoms and typical pattern
Sciatica has a fairly recognisable “signature”. It almost always affects one side of the body and the pain follows the path of the nerve:
- It starts in the lower back or the buttock.
- It runs down the back or the side of the thigh and the leg.
- It can reach the foot and the toes.
The pain varies hugely from one person to another: from a dull, constant ache to a sharp, burning, cramp-like jolt. It’s often accompanied by other sensations in the affected leg: tingling, like pins and needles; numbness or loss of sensitivity; and, in some cases, muscle weakness (for example, difficulty lifting the foot when walking).
There are movements that give sciatica away because they suddenly make it worse: coughing, sneezing, laughing hard or spending too long sitting. If that sounds familiar, you’re not imagining anything: it’s the classic pattern.
Warning signs: when it’s urgent
Here we need to get serious for a moment. The vast majority of sciatica cases are not an emergency. But there’s a rare and serious condition — cauda equina syndrome — in which the nerves at the end of the spinal cord are massively compressed. It requires urgent attention to avoid permanent damage.
⚠️ Go to A&E immediately if you notice:
- Loss of bladder or bowel control (leakage you didn’t have before).
- Numbness in the “saddle” area: genitals, perineum and inner thighs.
- Significant weakness, or weakness worsening quickly, in both legs.
- A sudden, intense pain together with any of the above signs.
A “foot drop” that’s getting worse — it’s increasingly hard to lift the front of the foot — also deserves attention without waiting. These cases are the exception, not the rule, but it’s worth knowing them. If in doubt, ask: better one visit too many than an important sign overlooked.
What really works? Evidence-based treatment
This is probably the part you came to read. And here’s some news that surprises a lot of people: what was recommended for decades — absolute bed rest — is now advised against. Staying in bed can even delay your recovery.
The leading clinical guidelines, such as the British NICE (NG59), point in a clear direction:
- Stay active. Carry on with your normal life as far as possible. A Cochrane review concluded that advising activity does no harm and, at the very least, is no worse than rest.
- Exercise and physiotherapy. An exercise programme prescribed by a professional is one of the pillars: it aims to strengthen the trunk, improve mobility and re-educate posture.
- Manual therapy (mobilisations, manipulation), ideally combined with exercise, not as a substitute for it.
- Painkillers such as anti-inflammatories, at the minimum effective dose and for the shortest possible time. It’s worth knowing that the evidence for their effectiveness in sciatica is modest.
On chiropractic and osteopathy: the evidence for manual therapy in sciatica is mixed and still being researched. It has its place within a combined approach — hands plus exercise plus education — but be wary of anyone who promises you a miracle solution in one session. Honesty is also part of the treatment.
Quick summary — what helps and what to avoid
| Does help | Better avoided |
|---|---|
| Keep moving within what’s tolerable | Total bed rest |
| Walk often, in short stretches | Sitting for hours on end |
| Guided and progressive exercise | Lifting weight “by brute force” |
| Gentle heat to relax | Seeking out the pain “to see if it eases” |
Our approach at Clínica QO (Alicante)
In the practice we see sciatica cases almost every week, and they rarely resemble each other. That’s why the first thing isn’t the couch: it’s listening to you and examining you. We want to understand when your pain appears, what triggers it, how far down it goes and what you need to do again without fear — driving, sleeping on the good side, playing with your children on the floor.
From there we work as the evidence recommends: manual therapy to relieve and give mobility, progressive exercise so the improvement holds over time, and postural re-education to reduce relapses. And if we detect any warning sign, we refer you without beating around the bush: knowing when it’s not our job is also part of doing it well.
An advantage for many of our international patients in the area: we treat you in your language. Here we understand how important it is to be able to describe your pain in your own words.
When is an injection or surgery considered?
The great majority never reach this point, but it’s worth having the full map. Taking a further step is considered when:
- Warning signs appear (cauda equina syndrome): there, surgery can be urgent.
- The pain is intense and persists despite a well-conducted conservative treatment, usually beyond 6–8 weeks.
- There’s a neurological deficit that’s progressing, such as weakness that’s increasing.
Among the options, epidural injections can relieve in the short term by reducing the inflammation around the nerve, although their long-term benefit is less clear. And surgery (for example, a microdiscectomy to remove the portion of disc compressing the nerve) is reserved for the cases that justify it. The decision is always individual and is made by the specialist with you, not by an article on the internet.
Prognosis and prevention
Let’s finish where it matters most: the future. And here the message is optimistic. Most people with sciatica improve noticeably within 4 to 8 weeks with active management. Many never need surgery at any point.
The “but” is honest: relapses are common. That’s why prevention isn’t an extra, it’s part of the treatment. Keeping up an exercise routine, taking care of how you sit and how you lift weight, and not abandoning the exercises as soon as the pain stops are the best policy against the next episode.
Did you know…? Spending many hours sitting is one of sciatica’s great allies. A simple, evidence-backed trick: get up and walk for a couple of minutes every half hour. Your lumbar disc will thank you.
In summary
Let’s return to that afternoon, to the lash that left you halfway up from the sofa. Now you know that pain isn’t a punishment or a sentence: it’s a signal. Your body is warning you that something in your lower back needs attention. Sciatica, in most cases, is a story with a calm ending — as long as you recognise the warning signs, keep moving and put yourself in good hands when you need to.
If you’ve spent days battling that pain that runs down your leg, you don’t have to work out what to do on your own. A good assessment saves you weeks of uncertainty.
Is sciatica holding you back? At Clínica QO (Alicante) we assess your case, explain what’s happening and design a plan tailored to you — in your language.
Frequently asked questions
How long does sciatica last?
Most episodes improve significantly within about 4 to 8 weeks with conservative treatment and by staying active. Some cases resolve sooner and others need more time, but the general trend is good.
Can or should I exercise with sciatica?
Yes, within what your pain tolerates. Absolute rest is advised against. Walking and a guided exercise programme are part of the treatment; ideally a professional should set out what to do and what to avoid in your phase.
Is it better to stay in bed for a few days?
No. Current guidelines advise against prolonged bed rest because it can delay recovery. Better to move gently and often, avoiding only the movements that trigger the pain.
Do chiropractic or osteopathy help with sciatica?
Manual therapy can be part of a combined approach with exercise and education, and many people feel relief. That said, the evidence is mixed and it’s wise to be wary of promises of an immediate cure in a single session.
When do I have to go to A&E?
If you lose control of your bladder or bowel, notice numbness in the genital area or inner thighs, or feel significant or progressive weakness in both legs. These are warning signs that require immediate attention.
Does sciatica heal without surgery?
In the vast majority of cases, yes. Surgery is reserved for warning signs, intense pain that doesn’t ease after weeks of conservative treatment or a neurological deficit that’s worsening.
Sources and reference guides
- NICE — Low back pain and sciatica in over 16s (NG59): https://www.nice.org.uk/guidance/ng59
- Cochrane Library — revisiones sobre actividad vs. reposo y AINEs en ciática: https://www.cochranelibrary.com/
- MedlinePlus (NIH) — Ciática: https://medlineplus.gov/spanish/sciatica.html
- Mayo Clinic — Sciatica: https://www.mayoclinic.org/diseases-conditions/sciatica/symptoms-causes/syc-20377435
