Sciatica Treatment: Your Complete Guide

From first symptoms to recovery, what you need to know about sciatica

“Nobody wants spinal surgery, so it should generally be your last resort. But getting the diagnosis right from the very start is the most important thing of all.”
– Consultant Spinal Surgeon Mr Chatterjee, St John & St Elizabeth Hospital

Sciatica is one of the most common and most misunderstood causes of back and leg pain. The sharp, burning, radiating discomfort it causes can range from a minor irritation to a condition that makes everyday life genuinely difficult. Yet with the right diagnosis and the right treatment plan, the vast majority of people recover well.

This guide explains what sciatica is, what causes it, and how it is treated, from self-management through to physiotherapy, spinal injections, and, where necessary, surgery. We also draw on the expertise of our own consultant spinal surgeon Mr Bob Chatterjee at St John & St Elizabeth Hospital, whose experience and approach to care runs throughout everything we do.

What Is Sciatica?

Sciatica refers to pain that travels along the path of the sciatic nerve, the longest nerve in the body, which runs from the lower back through the hips and buttocks and down each leg. When this nerve becomes compressed or irritated, it produces a distinctive pattern of pain, tingling, numbness, or weakness that typically affects one side of the body.

People describe sciatica in different ways:

• A burning or shooting pain that travels from the lower back into the buttocks and down the leg
• A sharp, electric-shock-like sensation that worsens with movement
• Numbness or tingling anywhere along the nerve’s path, into the thigh, calf, or foot
• Muscle weakness in the affected leg
• Pain that is worse when sitting, standing for long periods, or sneezing

In milder cases, the pain may only reach as far as the thigh. In more severe cases, it can extend all the way to the foot. The key distinguishing feature of sciatica is that it follows a path; it is not simply localised lower back pain. Sciatica is also one of the most commonly over-diagnosed causes of back and leg pain. Many people use the word “sciatica” to describe almost any pain running from the back into the hip or leg, but true sciatica has a very specific pattern and cause. Only a small proportion of patients who believe they have sciatica are found to have genuine sciatic nerve compression, which is why an accurate diagnosis matters so much before starting treatment.

What Causes Sciatica?

Sciatica is a symptom, not a diagnosis in itself. It occurs when the sciatic nerve is compressed or irritated somewhere along its path. Understanding the underlying cause is essential, as our consultant spinal surgeons explain, getting the diagnosis right is the single most important step: without it, effective treatment simply is not possible.

The most common causes include:

• Herniated (slipped) disc: The most frequent cause. When the soft inner material of a spinal disc pushes through its outer casing, it can press directly onto the sciatic nerve root, causing significant pain and neurological symptoms.
• Spinal stenosis: A narrowing of the spinal canal that puts pressure on the nerves, often associated with age-related changes to the spine.
• Bone spurs: Bony growths that develop along the edges of vertebrae, which can compress nerves over time.
• Piriformis syndrome: The piriformis muscle, which sits deep in the buttock, can occasionally irritate or compress the sciatic nerve, causing sciatica-like symptoms without a spinal cause.
• Spondylolisthesis: When one vertebra slips forward over another, it can narrow the space through which the sciatic nerve travels.
• Pregnancy: The weight and position of the baby, combined with hormonal changes, can place pressure on the sciatic nerve during pregnancy.

How Is Sciatica Diagnosed?

A thorough consultation is the cornerstone of effective sciatica treatment. At St John & St Elizabeth Hospital, first appointments with our spinal consultants typically last 20 to 30 minutes, because understanding how a patient arrived at this point, not just their symptoms today, is essential to finding the right path forward.

During your consultation, your consultant will review your full medical history and symptom pattern, perform a physical examination to assess nerve function, reflexes, and mobility, and may request imaging such as an MRI scan to identify the precise source of nerve compression. Only once the cause is clearly understood can the most appropriate treatment be recommended.

When to seek urgent care for back pain

Most sciatica is not a medical emergency, but certain symptoms require prompt attention. Seek urgent medical care if you experience:

• Loss of bladder or bowel control
• Severe or rapidly worsening weakness in both legs
• Numbness in the groin or inner thighs (saddle anaesthesia)
• Fever, chills, or night sweats alongside back and leg pain

These may be signs of cauda equina syndrome, a rare but serious condition requiring immediate treatment.

Sciatica Treatment: A Step-by-Step Approach

Treatment for sciatica follows a progressive path, starting with the least invasive options and moving toward more targeted interventions only when needed. Our consultants take a conservative approach wherever possible, focusing on preserving mobility and independence at every stage

Step 1: Self-Management

For many people, mild sciatica will improve on its own within a few weeks. During this time, the most helpful approach is to keep moving as much as possible; complete bed rest is not recommended. Applying heat or cold to the affected area, taking anti-inflammatory medication, and avoiding prolonged sitting can all help manage symptoms in the early stages.

Step 2: Physiotherapy

Physiotherapy is often the first formal treatment recommended for sciatica. A physiotherapist can assess the root cause of your symptoms and design a programme of targeted stretches and strengthening exercises to relieve pressure on the sciatic nerve, improve posture, and reduce the risk of recurrence.

Exercises that are commonly used include:

• Seated glute stretch: Sitting with one ankle crossed over the opposite knee and leaning gently forward to release tension in the piriformis muscle.
• Knee-to-chest stretch: Lying on your back and drawing one knee gently toward the chest to decompress the lower spine.
• Piriformis stretch: Lying on your back with both knees bent, crossing one ankle over the opposite knee and gently pulling the leg toward the chest.
• McKenzie extension exercises: Gentle press-up movements that help to centralise disc-related pain and reduce nerve irritation.

Always work with a qualified physiotherapist before beginning an exercise programme for sciatica. The right exercise for one person may not be appropriate for another, depending on the underlying cause.

Step 3: Spinal Injections

When physiotherapy and self-management have not provided adequate relief, a spinal injection can offer targeted, effective pain control. The most commonly used injection for sciatica is an epidural steroid injection, which delivers anti-inflammatory medication directly into the epidural space around the compressed nerve.

A nerve root block is another option, placing medication close to the specific nerve root that is causing symptoms. Both procedures are performed under image guidance for precision and safety, and are carried out as day-case appointments at St John & St Elizabeth Hospital.

Pain relief can begin within a few days and may last for several weeks to months. Injections can also provide a window of relief that makes physiotherapy more effective, helping patients to engage with rehabilitation they may otherwise have found too painful.

Step 4: Surgery

Surgery for sciatica is considered only when other treatments have not provided sufficient relief, or when there is progressive neurological deterioration, such as worsening weakness or the onset of bladder or bowel symptoms. Newer research also suggests that when sciatica is associated with clear muscle weakness, operative treatment may be preferable to prolonged conservative management, and that earlier intervention can lead to better outcomes. This does not mean every patient with sciatica needs surgery, but it does mean weakness should be taken seriously and assessed promptly by a spinal specialist. As our consultant spinal surgeons put it, surgery should be the last resort unless there is some impending disaster.

The most common procedure is a lumbar nerve decompression, often referred to as a microdiscectomy, when a herniated disc is the cause. This is performed as keyhole surgery under general anaesthetic, typically taking between one and one and a half hours.

What Happens During Sciatica Surgery?

Our consultant spinal surgeons describe the procedure in straightforward terms. You lie face down on a padded table, and through a small incision in the skin, the surgeon works carefully through the muscles to access the spine. A small section of bone, around a centimetre square, is removed to expose the protected nerve beneath.

In the case of a herniated disc, the surgeon finds the bulging disc pressing against the nerve, a situation our surgeons describe vividly as a piece of spaghetti draped over a bump. The goal is to carefully move the nerve aside and remove the disc material from within the bulge, rather than from on top of it, so as to protect the nerve throughout. As the disc is gradually removed, it flattens, the nerve is released from tension, and the pain pathway is interrupted.

The philosophy guiding every procedure is to do the smallest amount possible to get the patient out of trouble. Surgery is not about radical intervention; it is about precise, targeted relief.

Recovery After Sciatica Surgery

Recovery from lumbar decompression surgery is typically quick. Most patients go home the same day or the day after surgery, and many are back on their feet within days. The aftercare following surgery is just as important as the operation itself; the two go hand in hand for a good outcome.

What to expect during recovery:

• Mild soreness at the incision site for the first few days, manageable with pain relief
• Physiotherapy begins shortly after surgery to rebuild strength and flexibility
• A gradual return to normal activities over two to six weeks, depending on your work and lifestyle
• Most patients experience significant improvement in leg pain relatively quickly, back pain may take a little longer to settle
• Follow-up appointments with your consultant to monitor progress and recovery

Sciatica is painful, frustrating, and can feel never-ending, but the good news is that most people get better. Whether it settles on its own with some rest and gentle movement, responds to physiotherapy, or needs a little more help in the form of an injection or surgery, there is always a next step. The key is not to ignore it, get the right diagnosis early, and work with people who understand what you are dealing with. Recovery is possible, and for the vast majority of people, it happens.

Frequently Asked Questions About Sciatica

Here are the questions we hear most often from patients dealing with sciatica.

Can sciatica go away on its own?
Yes, sciatica can go away on its own and in many cases, it does. Mild to moderate sciatica often resolves within a few weeks with rest, gentle movement, and over-the-counter pain relief. However, if symptoms are severe, persistent, or worsening, it is important to seek professional assessment rather than waiting.

How long does sciatica last?
Sciatica duration varies considerably depending on the cause and severity. Many people see significant improvement within four to six weeks. However, in some cases, particularly those caused by a herniated disc or spinal stenosis, symptoms can persist for several months without treatment. Early intervention generally leads to better and faster outcomes.

Is walking good for sciatica?
Yes, walking is generally good for sciatica. Staying active and keeping the spine moving helps prevent the nerve from becoming more sensitised and supports recovery. Short, gentle walks are preferable to prolonged sitting or complete bed rest. If walking worsens your symptoms significantly, seek advice from a physiotherapist or GP.

What is the best sleeping position for sciatica?
The best sleeping position for sciatica is typically on your side, with a pillow placed between your knees to keep the spine aligned and reduce pressure on the sciatic nerve. Some people also find relief sleeping on their back with a pillow under their knees. Sleeping on your stomach is generally not recommended as it can increase pressure on the lumbar spine.

Can sciatica cause permanent nerve damage?
Sciatica can cause permanent nerve damage, but this is uncommon if the condition is treated appropriately. Prolonged compression of the sciatic nerve without treatment can lead to lasting weakness, numbness, or loss of function. This is why persistent or worsening symptoms should always be assessed by a specialist rather than left unmanaged.

Are sciatica and a slipped disc the same thing?
No, sciatica and a slipped disc are not the same thing, though they are closely related. Sciatica is the symptom, the pain, numbness, and tingling that runs along the sciatic nerve. A slipped (herniated) disc is one of the most common causes of sciatica, but it is not the only one. Sciatica can also be caused by bone spurs, spinal stenosis, or piriformis syndrome, among other things.

When should I see a specialist about sciatica?
You should see a specialist about sciatica if your symptoms have not improved after four to six weeks of self-management, if the pain is severe and significantly affecting your daily life, if you are experiencing progressive weakness or numbness in your leg, or if you develop any loss of bladder or bowel control, which requires urgent medical attention.