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Key Takeaways
- Sciatica is nerve pain that typically travels from the lower back or buttock down one leg.
- Most cases improve over weeks with conservative care.
- Seek urgent medical help if pain worsens or is accompanied by leg weakness, numbness around the groin, or changes in bladder or bowel control, as these can signal serious nerve compression.
You've had a dull ache in your lower back for weeks. You blamed the office chair, the MRT commute, the hours at your desk. Then one morning something shifted. A sharper pain appeared, running from your buttock down the back of one leg, sometimes into the calf, sometimes as far as the foot. Some days it burns. Some days your toes go numb.
You've tried stretching. You've taken Panadol. Maybe you booked a massage, and it helped for a day, then the pain came back.
If that sounds familiar, the question in your head probably isn't "what is sciatica." It's "is this serious, and what do I actually do about it."
What sciatica pain feels like, and where it shows up
Sciatica isn't a diagnosis on its own. It's a pattern, caused by irritation or compression of the sciatic nerve, which runs from your lower spine through the buttock and down the back of each leg. That's why the pain shows up in places that seem disconnected from your back.
A few things separate sciatica from an ordinary strain.
- It follows a line, from the lower back or buttock down the back of one leg, rather than staying put.
- It's usually one-sided.
- It feels like burning, shooting, or an electric jolt, not a dull, even ache, and it often worsens when you sit for long periods, cough, or sneeze.
- Tingling, pins and needles, or numbness in the leg or foot are common companions.
General back strain stays in the back. Sciatica travels. That single distinction is the fastest way to tell them apart without a scan.
Seek medical care immediately if
If the pain is on both sides at once, worsening quickly, or paired with muscle weakness in both legs, that's a different pattern — it can signal a rare but serious condition called cauda equina syndrome, and it needs same-day medical attention, not a routine appointment.
Why it only hurts on one side
The sciatic nerve is the longest nerve in your body, and you have one on each side. Sciatica usually happens when something presses on the nerve root on one side only, which is why the pain rarely shows up symmetrically.
Picture the nerve as one continuous line running from your lower spine to your foot. Pressure anywhere along that line, most often near where spinal nerve exits the spine, gets felt at the far end too, the same way squeezing a hose near the tap changes the pressure at the nozzle. A problem sitting in your lower back can end up as numbness in your calf.
What causes it, and who tends to get it
The most common causes of sciatica pain affecting the lower back, buttock, and leg.
Sciatica usually comes from something pressing on or irritating the nerve, and certain patterns show up more often than others.
The most common cause by far is disc herniation or bulging disc in the lower spine pressing on the adjacent nerve root, particularly in adults in their 30s to 50s who spend long stretches sitting.
The intervertebral discs that sit between your vertebrae act as cushions; when one bulges or ruptures, it can push directly into the nerve.
Other possible causes include:
- Spinal stenosis, a narrowing of the spinal canal that comes with age, is another, more common past 50.
- Less often, the piriformis muscle deep in the buttock tightens and presses on the nerve from outside the spine rather than from a disc at all, which feels similar but responds to different treatment.
- Ordinary wear and tear on the discs over time can also reduce cushioning enough to irritate the nerve.
Can pregnancy cause sciatica?
Yes. Pregnancy can cause sciatica-like symptoms as the growing uterus and changes in posture place extra pressure on nearby nerves. Symptoms often improve after delivery, but it's still important to discuss them with your obstetrician rather than trying to manage them on your own.
What Increases Your Risk of Sciatica?
While anyone can develop sciatica, certain factors make it more likely, including:
- Spending long hours sitting or driving
- Jobs that involve frequent lifting, twisting, or repetitive bending
- Age-related changes in the spine, such as disc degeneration or spinal stenosis
- Excess body weight, which places extra stress on the lower back
- Smoking, which may contribute to disc degeneration
- Conditions such as diabetes that can affect nerve health
None of this means you did something wrong. It means your spine has been carrying a specific kind of load for a while, and the nerve is the part that finally said something.
Sciatica that settles on its own vs sciatica that needs help
Most sciatica improves with conservative care over a matter of weeks. That's the reassuring part. The less reassuring part is that a meaningful share of cases don't resolve on their own, and waiting too long without any assessment can let short-term nerve irritation turn into a longer, harder-to-treat problem, partly because a nervous system under prolonged irritation becomes more sensitive to pain over time, not less.
Mild to moderate low back pain that started recently and is gradually improving week by week, without numbness or weakness, is usually safe to manage yourself for a couple of weeks with gentle movement and appropriate pain relief. Pain that has lasted beyond four to six weeks without clear improvement, disturbs your sleep, or keeps recurring after seeming to settle is worth a proper assessment rather than another round of stretching and hoping.
These symptoms are not typical sciatica — they can signal a nerve emergency called cauda equina syndrome, and need same-day attention: new or worsening leg weakness, numbness around the groin or inner thighs, loss of bladder or bowel control, or severe pain following a fall or accident. Go to an emergency department, not a GP appointment next week.
GP, physiotherapist, or specialist: who should you actually see first
A consultation with your doctor can help identify the right next steps for your condition.
When sciatica flares, the hardest part often isn’t deciding whether to get help — it’s figuring out who to see first.
Start with your (primary care doctor) GP
If your symptoms are new and mild, your GP is usually the right first stop. They can:
- Assess whether this looks like a simple strain or something needing further investigation,
- Prescribe short-term pain relief,
- Refer you onward if needed.
A GP will typically conduct a physical examination that includes checking your reflexes, leg strength, and nerve tension signs like the straight leg raise test.
For the first two to three weeks of mild sciatica, GP-level care is often enough on its own.
Move to a physiotherapist for structured recovery
A physiotherapist becomes the right next step once pain has been present for two weeks or more and you want structured rehabilitation. They focus on:
- Manual therapy, nerve mobilisation,
- Graded strengthening exercises aimed at the core, hip, and glute muscles that support your lower spine, which reduces the irritation at its source rather than just numbing it.
They don't prescribe pain medication or order imaging, but for a large share of sciatica cases, physiotherapy is where the actual recovery happens.
Consider a pain specialist if symptoms persist
A pain specialist is worth considering once sciatica has persisted beyond four to six weeks, involves clear nerve symptoms like burning or numbness, or hasn't responded to physiotherapy and basic medication.
They sit between conservative care and surgery, and their toolkit includes diagnostic nerve blocks to confirm exactly which nerve is responsible, along with image-guided injections that conservative care alone can't offer.
Surgeons are the last stage, not the first
An orthopaedic surgeon or neurosurgeon enters the picture when there's:
- A confirmed structural problem
- Progressive weakness,
- Pain that hasn't responded to a full course of non-surgical treatment.
Surgery is usually the last stage of the pathway, not the first, and a good surgeon will say so.
These aren't competing options. They're stages, and most people only need to move to the next one if the current stage genuinely hasn't worked.
Do you actually need an MRI?
Probably not immediately. Imaging tests tends to be most useful once symptoms have lasted beyond four to six weeks, when there are neurological signs like numbness or weakness, or when red-flag symptoms (like those linked to cauda equina syndrome) are present.
One thing worth knowing before you push for one: disc bulges show up on scans in plenty of people who have no pain at all. A scan that finds a bulge doesn't automatically mean that's what's causing your sciatica. It needs to be read alongside your actual symptoms and examination, not treated as the final word on its own.
What actually relieves sciatica pain, from exercise to surgery
Treatment for sciatica follows a ladder. You start at the least invasive step that fits your situation, and only escalate if it doesn't work.
Conservative care
For most people, that means physical activity modification, targeted physiotherapy exercises, short courses of anti-inflammatory medication, and, when the pain has a burning or electric quality, nerve-specific medication such as gabapentin or pregabalin rather than standard painkillers. This combination resolves the majority of cases without anything more invasive.
Injections
If conservative care plateaus rather than improving, image-guided injections are a reasonable next step.
An epidural steroid injection delivers anti-inflammatory medication directly to the inflamed nerve root, often calming things down enough for physiotherapy to actually make progress. It's worth knowing this offers short-term relief rather than a guaranteed way to avoid surgery. For people who genuinely need surgery, an injection may ease things temporarily without changing that eventual outcome.
A nerve block can do double duty, confirming which nerve is responsible while also providing relief.
Minimally invasive procedures and surgery
Minimally invasive orthopaedic procedures, such as radiofrequency treatment, may come next for persistent disc-related compression that hasn't responded to injections.
Surgery, typically a microdiscectomy or spinal decompression, is reserved for cases with confirmed significant compression, progressive weakness, or pain that genuinely hasn't responded to everything before it. Most people never reach this stage, and the point of every earlier step is to make sure they don't need to.
Managing a flare while you're figuring out your next step
A few things help in the meantime without requiring a diagnosis first:
- Gentle walking is usually well tolerated and tends to calm an irritated nerve better than staying still.
- Lying on your side with a pillow between your knees is a position many people find eases pressure quickly during a bad flare, though it settles the symptom rather than the cause.
- Prolonged bed rest doesn't speed up recovery, and staying gently active is just as effective and often more comfortable than lying still.
- Massage can feel good and may ease surrounding muscle tension, but it works on the muscles around the nerve, not the compression itself, so treat it as comfort rather than treatment.
- The same goes for heat or ice, whichever you find more soothing.
None of these replace an actual assessment if your pain is past the two-to-three-week mark or ticking any of the warning signs above.
Why this drags on longer than it should in Singapore
Here's where the pathway tends to let people down.
Someone with early sciatica typically starts with a GP, which is reasonable, but if symptoms haven't resolved in a couple of weeks, the next step isn't always obvious. Some patients get sent to physiotherapy and stay there even when the nerve irritation is too severe for exercise alone to make headway. Others get an MRI, are told a disc is bulging, and assume surgery is the only option left, when a targeted injection might have resolved things first.
The missing piece is usually sequencing, not any single clinician doing something wrong. Physiotherapists don't prescribe injections. GPs don't perform image-guided procedures. Surgeons operate, but a lot of patients referred to one haven't yet tried the interventional options that sit between rehab and the operating table. The pathway isn't designed to hand you off in the right order on its own.
What to do next
If your pain is new and mild, give conservative care two to three weeks and track whether it's genuinely improving. If it's gone on longer than that, or any of the urgent signs above apply to you, the more useful question isn't "is this sciatica" anymore. It's which clinician should see you first, given what your symptoms actually look like.
If you're not sure whether that's a GP, a physiotherapist, or someone further along the chain, care team can help you work it out over WhatsApp, usually within a day. Talk to us if you’d like help planning the next step.
Frequently asked questions
The mechanism is different even though the pain feels similar. In pregnancy, the growing uterus and shifting posture put direct pressure on the nerve, rather than a disc problem in the lumbar spine or intervertebral discs. Symptoms usually ease after delivery, but they're still worth raising with your obstetrician rather than managing on your own, since some pain relief options that are fine outside pregnancy aren't appropriate during it.
Buttock pain that radiates down the leg is often the first sign of nerve root compression higher up in the spine, felt at the point where the nerve passes through the buttock. It can also come from piriformis syndrome, where the muscle itself, not a spinal disc, is pressing on the nerve. The two feel similar but respond to different treatment, which is part of why a proper assessment matters.
Not one that works for everyone, since the cause of the compression differs from person to person. A stretch that helps a disc-related case can do nothing for a piriformis-related one, and vice versa. Lying on your side with a pillow between your knees is the position most people find brings the quickest, if temporary, relief during a flare.
It can ease tension in the muscles around the irritated nerve and reduce trigger points in the surrounding tissues, which sometimes takes the edge off the pain. It doesn't address whatever is actually compressing the nerve, whether that's a disc, a bone spur, or a tight piriformis muscle causing nerve impingement. Treat massage as comfort alongside proper care, not as the care itself.
Treatment usually starts with short courses of anti-inflammatory medication and, if muscle spasm is involved, a muscle relaxant. When the pain has a burning, shooting, or electric quality, healthcare professional often add nerve-modulating medication such as gabapentin or pregabalin, which targets nerve pain specifically rather than general inflammation. The right combination and dosage depends on your specific symptoms, which is why this is a conversation for a doctor rather than a fixed formula.
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Disclaimer
This article and its contents are provided for educational and informational purposes only and do not constitute medical advice or professional services specific to you or your medical condition. For decisions about your health or treatment, speak with a qualified doctor who knows your situation. An…
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