Back pain is one of the most common reasons people visit a doctor, but not all back pain is the same. Sciatica is a specific type of pain that follows the path of the sciatic nerve, running from the lower back through the buttock and down the leg. It is often misunderstood, frequently undertreated, and in some cases left too long before the right specialist gets involved.
If you have been dealing with back pain that shoots into your leg, causes numbness or tingling below the knee, or makes sitting or standing for any length of time unbearable, this article will help you understand what is happening, what can help, and when it is time to see a specialist.
What Is Sciatica?
Sciatica is not a diagnosis on its own. It is a symptom, a description of pain that travels along the route of the sciatic nerve. The sciatic nerve is the longest and widest nerve in the body. It originates from several nerve roots in the lower lumbar and sacral spine, merges into a single nerve in the buttock, and then travels down the back of the thigh, branching into the lower leg and foot.
When something compresses or irritates one of the nerve roots that form the sciatic nerve, the result is the characteristic radiating pain most people recognise as sciatica. The compression is most commonly caused by a herniated disc, a bone spur, or narrowing of the spinal canal known as spinal stenosis.
Understanding the cause matters because treatment is aimed at the underlying problem, not simply the pain itself.
What Does Sciatica Actually Feel Like?
Sciatica tends to produce a distinctive pattern of symptoms that sets it apart from ordinary back pain or muscle strain.
The most common symptoms include:
- A sharp, burning, or electric shock-like pain that travels from the lower back or buttock down one leg
- Pain that worsens when sitting, particularly when driving or working at a desk for extended periods
- Numbness or a pins-and-needles sensation in the thigh, calf, foot, or toes
- Weakness in the affected leg, making it difficult to lift the foot, stand on tiptoe, or climb stairs
- Pain that is often worse with coughing, sneezing, or straining
- Discomfort that tends to affect one side of the body rather than both
Most people with sciatica notice that the leg pain is actually worse than the back pain. This is a useful distinguishing feature. If the pain is primarily in your back with very little radiating into the leg, the cause may be muscular or mechanical rather than nerve-related.
What Causes Sciatica?
The most common cause is a herniated lumbar disc. The discs between the vertebrae act as cushions and shock absorbers. When the outer layer of a disc weakens and tears, the inner gel-like material can press against the adjacent nerve root. Even a relatively small herniation in the right location can produce significant sciatic pain.
Other causes include:
Spinal stenosis. The spinal canal can narrow over time due to arthritis, thickened ligaments, or disc degeneration. As the canal narrows, the nerve roots have less space and become compressed. This is more common in adults over 50.
Spondylolisthesis. One vertebra slips slightly forward over the one below it. Depending on the degree of slippage, this can cause nerve root compression and sciatic symptoms.
Piriformis syndrome. The piriformis muscle, which sits deep in the buttock, can occasionally irritate or compress the sciatic nerve as it passes nearby. This is a less common cause but worth considering when other causes have been excluded.
Degenerative disc disease. As discs age and lose height, the spaces between the vertebrae narrow. This can reduce the opening through which the nerve roots exit the spine and lead to compression over time.
In most cases, identifying the specific cause requires imaging. An MRI scan gives the clearest picture of disc anatomy, nerve root compression, and spinal canal dimensions.
Will Sciatica Go Away on Its Own?
For many people, yes. The majority of acute sciatica episodes improve significantly within six to twelve weeks with appropriate conservative management. The body is often able to reabsorb herniated disc material over time, reducing the pressure on the nerve.
However, “going away on its own” does not mean doing nothing. Conservative management during this period makes a real difference to how quickly and fully symptoms resolve. This typically includes:
- Activity modification in the acute phase, avoiding positions and activities that aggravate symptoms
- Targeted physiotherapy to reduce nerve tension, strengthen the core and surrounding muscles, and improve spinal stability
- Anti-inflammatory medication to manage pain and reduce swelling around the affected nerve
- Heat or cold application depending on the stage of the condition
- Corticosteroid injections into the epidural space, which can provide meaningful short-term relief when pain is severe and is not responding adequately to other measures
The key is structured, guided management. Resting completely for weeks on end is not recommended and often delays recovery. Staying gently active within tolerable limits, with the right guidance, consistently produces better outcomes.
When Does Sciatica Need a Specialist?
This is the question most people find difficult to answer, because sciatica can range from a minor inconvenience to a severely disabling condition.
See a specialist if:
- Your symptoms have not improved meaningfully after four to six weeks of conservative treatment
- The leg pain is severe and significantly limiting your daily life or ability to work
- You are experiencing progressive weakness in the leg, particularly if you notice the foot dragging, difficulty lifting the front of the foot, or increasing difficulty climbing stairs
- Numbness is spreading or worsening rather than improving
- You have lost control of your bladder or bowel, even partially. This is a medical emergency and requires urgent assessment. It may indicate cauda equina syndrome, a rare but serious condition that requires immediate surgical intervention
- You are over 50 and have new onset back and leg pain, particularly with a history of cancer, unexplained weight loss, or recent infection, as these symptoms warrant prompt investigation
Dr George Oduah sees patients with spinal conditions across Mbombela, Nelspruit, and the wider Mpumalanga region. A thorough assessment at the practice in Sonheuwel includes a detailed clinical examination, review of imaging, and a clear explanation of what is causing your symptoms and what can be done about it.
What Happens If Conservative Treatment Does Not Work?
When sciatica does not respond to a structured course of conservative management, the next step is a specialist review to determine why and whether intervention is appropriate.
Epidural steroid injections can be administered under image guidance to deliver anti-inflammatory medication directly to the area of nerve compression. These are performed by Dr Oduah using musculoskeletal ultrasound guidance and can provide significant relief for patients who have not responded adequately to oral medication or physiotherapy alone.
Surgery is considered when conservative measures have been exhausted and there is either persistent disabling pain or progressive neurological deficit. The most common procedure is a microdiscectomy, in which the portion of the herniated disc that is compressing the nerve root is carefully removed. This is performed through a small incision using magnification, and most patients are mobilised within 24 hours of the procedure. For sciatica caused by spinal stenosis, a decompression procedure to widen the spinal canal may be more appropriate.
The decision to recommend surgery is not taken lightly. Dr Oduah’s approach is to exhaust appropriate non-surgical options first, and to recommend surgery only when the evidence clearly supports it for your specific situation.
How Long Does Recovery From Sciatica Take?
Recovery timelines vary considerably depending on the cause, severity, and treatment path.
For patients who respond to conservative management, meaningful improvement is usually evident within six to twelve weeks, with continued progress over several months. Full resolution of all symptoms can take up to a year in some cases, particularly where the nerve has been significantly irritated.
For patients who have surgery, most experience rapid relief from the radiating leg pain, often within days of the procedure. Back pain and core strength take longer to recover, and a structured rehabilitation programme in the weeks following surgery is important for the best long-term outcome.
Frequently Asked Questions About Sciatica
Is sciatica the same as a slipped disc? Not exactly, though they are closely related. A slipped, or herniated, disc is one of the most common causes of sciatica. But sciatica can also be caused by spinal stenosis, spondylolisthesis, or other conditions that compress the sciatic nerve. An MRI is the most reliable way to identify which specific problem is present.
Can I exercise with sciatica? Gentle, appropriate exercise is generally beneficial and is a key part of recovery. The type of exercise matters considerably. High-impact activity that loads the spine, or exercises that significantly aggravate symptoms, should be avoided in the acute phase. A physiotherapist experienced in spinal conditions will guide you on what is safe and helpful for your specific situation.
What is the difference between sciatica and referred back pain? Referred pain from tight muscles or facet joints in the back can produce discomfort that spreads into the buttock and upper thigh. True sciatica, caused by nerve compression, tends to produce symptoms that travel below the knee and may include numbness, tingling, or weakness, not just pain. If you are unsure which you have, a clinical examination will usually clarify this without the need for imaging.
Will I need surgery? The majority of people with sciatica do not need surgery. Conservative management resolves symptoms satisfactorily in most cases. Surgery is reserved for patients with persistent disabling pain despite adequate non-surgical treatment, or those with significant or progressive neurological symptoms.
Does sciatica come back after treatment? For some patients, yes. Recurrence is more likely if the underlying factors, such as a sedentary lifestyle, poor core strength, or occupational loading of the spine, are not addressed as part of the recovery process. Building and maintaining spinal stability through ongoing exercise is the most effective way to reduce the risk of recurrence.
When to See Dr George Oduah in Mbombela
Sciatica that is managed early and appropriately resolves faster and with less risk of becoming chronic. If you have been putting up with radiating back and leg pain, or if conservative treatment is not delivering the improvement you expected, a specialist assessment gives you a clear picture of what is happening and what your options are.
Dr George Oduah consults at his practice in Sonheuwel, Mbombela, and offers comprehensive assessment and management of all spinal conditions, from non-surgical care and guided injections through to minimally invasive spine surgery when it is needed.
