More Than Just a Backache: Sciatica Causes and Treatment Options

Sciatica is a nerve-related condition that occurs when the sciatic nerve is irritated or compressed, leading to pain, tingling, or weakness that radiates from the lower back down the leg. In more severe cases, it can significantly affect mobility, function, and quality of life.

Effective management often requires a multidisciplinary approach. Pain specialists focus on managing pain and improving function through medications, rehabilitation, targeted injections, and minimally invasive interventional procedures. Spine surgeons specialise in evaluating and treating structural conditions affecting the spine and nerves, including performing minimally invasive spinal procedures or surgeries when necessary.

In this article, our pain specialist and neurosurgeon explain the full spectrum of treatment options for sciatica, and when each approach may be most appropriate for lasting relief.

What causes sciatica?

Sciatica is commonly caused by:

• Herniated (slipped) discs
• Spinal stenosis
• Degenerative spinal changes
• Less commonly, muscle-related nerve compression such as piriformis syndrome

While mild cases may improve with conservative care, persistent or worsening symptoms may require specialist assessment and targeted treatment.

How is sciatica diagnosed?

Accurate diagnosis is essential because treatment depends on identifying the exact source and severity of nerve compression.

Specialists may evaluate:

• The location and pattern of pain
• Muscle strength and reflexes
• Walking ability and posture
• Nerve tension signs during physical examination

Imaging investigations such as MRI scans are commonly used to assess disc herniation, spinal stenosis, or other structural causes. In selected cases, nerve conduction studies may also be recommended.

Conservative treatment options for sciatica

For many patients, sciatica can improve without surgery. Conservative treatment approaches including medications, physiotherapy, rehabilitation, and lifestyle modification are often highly effective in controlling pain, reducing inflammation, improving mobility, and supporting recovery.

Treatment plans are tailored according to symptom severity, imaging findings, lifestyle demands, and overall health.

Medications for sciatica pain relief

Medications help manage pain and inflammation while allowing patients to remain mobile and participate in rehabilitation.

Depending on symptom severity and the underlying cause, a pain specialist may prescribe:

• Non-steroidal anti-inflammatory drugs (NSAIDs) to reduce inflammation around the affected nerve
  • COX-2 inhibitors are a subset of NSAIDs that may be more suitable for those with a history of any gastric problems
• Muscle relaxants to relieve muscle spasm
• Neuropathic pain medications such as pregabalin or gabapentin, which may help relieve burning, tingling, or electric shock-like nerve pain

While medications can provide relief, prolonged reliance on painkillers alone may not address the underlying structural cause of nerve compression.

Physiotherapy and rehabilitation

Physiotherapy is often recommended as part of a structured treatment plan guided by a pain specialist or neurosurgeon, depending on the underlying cause of symptoms. It plays an important role in improving spinal stability, posture, flexibility, and mobility.

A structured rehabilitation programme may include:

• Core and back strengthening exercises – by building strength in the surrounding musculature, pressure on the affected nerve is reduced.
• Stretching and mobility work
• Postural correction
• Ergonomic advice
• Gradual return-to-activity planning

Low-impact activities such as walking, swimming, and guided strengthening exercises can help reduce strain on the lower back while maintaining mobility.

However, in cases of severe nerve compression, physiotherapy alone may not be sufficient, and more targeted interventions may be needed.

Lifestyle and activity modification

Prolonged sitting, poor lifting technique, and sedentary habits can all perpetuate sciatic nerve irritation.

Patients are often advised to:

• Avoid prolonged sitting
• Practise proper lifting techniques
• Maintain a healthy weight
• Stay physically active within comfort limits
• Improve workstation ergonomics

Extended bed rest is generally discouraged, as gentle movement often supports recovery better than prolonged inactivity.

Specialised injections for sciatica

When conservative treatment does not provide sufficient relief, specialised image-guided injections may be used to target the affected nerve more directly. These procedures aim to reduce inflammation, relieve pain, and improve mobility, while helping reduce reliance on long-term oral medications.

Epidural steroid injections (nerve blocks)

Targeted injections deliver corticosteroid medication and local anaesthetic directly around the affected nerve root. This helps reduce nerve inflammation and alleviate radiating leg pain associated with sciatica.

These injections may help:

• Relieve severe flare-ups
• Improve mobility
• Facilitate participation in physiotherapy
• Reduce dependence on oral pain medications

Relief duration varies depending on the underlying condition and severity of nerve compression.

Interventional spine procedures for sciatica

For disc herniation or spinal stenosis that does not respond adequately to conservative treatment, interventional spine procedures may help reduce nerve irritation, relieve pain, and improve function. These procedures are typically image-guided and are performed using needles or catheters without open incisions.

They may be performed by a pain specialist or selected spine surgeons depending on the technique and clinical indication.

Radiofrequency disc ablation

Using real-time imaging guidance, radiofrequency energy is delivered through a fine needle to reduce the size of the herniated disc pressing on the nerve root.

The procedure is typically performed as day surgery and minimises disruption to surrounding tissues.

Neuroplasty

This catheter-based procedure may be used in patients with chronic or recurrent sciatica caused by scar tissue.

The technique helps:

• Break down adhesions
• Deliver medication directly to the affected nerve

When might surgery be considered for sciatica?

Most patients with sciatica do not require surgery. However, surgical treatment may be recommended when there is significant nerve compression, worsening neurological symptoms, or persistent pain that does not improve with conservative and interventional treatment.

Surgery aims to physically relieve pressure on the affected nerve by addressing the underlying structural cause.

Surgical procedures can usually be done using minimally invasive (keyhole) techniques, with direct access to the spine through small incisions with less soft tissue and muscle disruption.

Depending on the underlying condition, surgical treatment may include:

• Microdiscectomy (removal of the herniated part of the disc pressing on the nerve)
• Minimally invasive spinal decompression (relieving pressure on compressed nerves by removing excess bone and thickened ligaments)

Modern spine surgery techniques are increasingly precise and minimally invasive, often allowing for faster recovery and reduced postoperative discomfort compared to traditional open surgery. Many of these cases can be performed as day surgeries.

Living well with sciatica

With accurate diagnosis and timely specialist care, most patients can achieve significant improvement in pain and function.

The key is understanding that persistent sciatica is not something patients simply have to “live with”. A range of effective treatment options exist — from rehabilitation and targeted injections to minimally invasive procedures and surgeries.

Early assessment can help patients access the right treatment before symptoms become more severe or prolonged.

When should patients seek medical attention?

Persistent or worsening nerve compression can sometimes lead to long-term nerve damage if left untreated.

Patients should seek specialist evaluation if they experience:

• Sciatic pain lasting more than several weeks
• Recurrent or worsening symptoms despite initial treatment
• Pain that significantly affects sleep or daily activities
• Persistent numbness or tingling in the leg
• Difficulty walking or reduced functional ability

Patients should seek urgent care if they experience:

• Sudden or progressive leg weakness
• Severe numbness, especially in the groin or inner thigh area
• Loss of bladder or bowel control
• Severe back or leg pain with rapidly worsening neurological symptoms

These may be signs of serious nerve compression requiring urgent evaluation.