TL;DR Quick answer
Pain that travels from the lower back down the leg along the path of the sciatic nerve. A pain specialist can confirm the cause and plan treatment, with non-surgical options considered first, such as physiotherapy-led rehabilitation, image-guided injections and epidural steroid injection.
Medically reviewed by Dr. Nikhilesh Samudrala — Consultant Pain Physician View full profile →
About sciatica
Sciatica describes pain caused by irritation or compression of the nerve roots that form the sciatic nerve. The pain typically starts in the lower back or buttock and travels down the back of one leg, sometimes to the foot.
| Key facts | Details |
|---|---|
| Common symptoms | Shooting or burning pain down one leg, often below the knee; numbness, tingling or pins and needles; weakness in the leg or foot |
| Common causes | Lumbar disc herniation; spinal stenosis; spondylolisthesis (one vertebra slipping on another) |
| How it is diagnosed | Diagnosis is based on the pattern of symptoms and a neurological examination. |
| When to get help | Get emergency help if you develop loss of bladder or bowel control, numbness in the saddle area, or weakness in both legs; these can be signs of cauda equina syndrome |
| Treatment options | Physiotherapy-Led Rehabilitation, Image-Guided Injections, Epidural Steroid Injection, Caudal Epidural Injection |
| Who to see | Dr. Nikhilesh Samudrala, Consultant Pain Physician |
Symptoms
- Shooting or burning pain down one leg, often below the knee
- Numbness, tingling or pins and needles
- Weakness in the leg or foot
- Pain that worsens with sitting, coughing or sneezing
Risk factors
- Age between about 30 and 50, when disc changes are common
- Prolonged sitting and a sedentary lifestyle
- Heavy lifting, bending and twisting
- Excess body weight
- Smoking, which affects disc health
- Diabetes, which increases the risk of nerve damage
Causes
- Lumbar disc herniation
- Spinal stenosis
- Spondylolisthesis (one vertebra slipping on another)
- Piriformis muscle irritation
Prevention
- Stay active and strengthen your core and back muscles
- Lift with your knees and keep loads close to your body
- Take regular breaks from sitting and check your posture
- Maintain a healthy weight
- Stop smoking
How it is diagnosed
Diagnosis is based on the pattern of symptoms and a neurological examination. An MRI scan is recommended when symptoms are severe, persistent, or when a procedure is being considered.
Treatment options
Many cases improve with time, activity modification, medication and physiotherapy. When leg pain persists, an epidural steroid injection or selective nerve root block may reduce inflammation around the nerve. Surgical opinion is sought when there is progressive weakness or pain that does not respond.
Advanced non-surgical treatment
When leg pain continues despite medicines and physiotherapy, image-guided treatments may be considered to reduce inflammation around the irritated nerve root:
- Epidural steroid injection, including transforaminal or caudal approaches
- Selective nerve root block to confirm and treat the affected nerve level
- Pulsed radiofrequency treatment for selected patients with persistent nerve pain
These are done under X-ray guidance as day-care procedures. The doctor will explain which, if any, suits you after reviewing your examination and MRI.
Advantages of non-surgical treatment
- No surgical incision
- Day-care procedure: home the same day
- Precise placement under X-ray guidance
- May reduce the need for strong pain medicines
- Can help you return to exercise and rehabilitation
- Spinal anatomy is not altered
Myths and facts
Myth Sciatica always needs surgery.
Fact Most people improve without surgery. Surgery is usually reserved for severe or progressive weakness, bladder or bowel problems, or pain that does not respond to other treatment.
Myth Complete bed rest is the best treatment.
Fact Staying gently active usually helps recovery more than prolonged rest.
Myth Epidural injections damage the spine.
Fact When performed under image guidance by a trained specialist, serious complications are rare. Your doctor will discuss the specific risks with you before the procedure.
When to seek help
Get emergency help if you develop loss of bladder or bowel control, numbness in the saddle area, or weakness in both legs. These can be signs of cauda equina syndrome.
| Option | Type | What it involves | Typical duration |
|---|---|---|---|
| Physiotherapy-Led Rehabilitation | Treatment | Guided exercise and movement to restore strength, flexibility and confidence. | Ongoing / varies |
| Image-Guided Injections | Treatment | Precise injections using X-ray or ultrasound guidance to target the source of pain. | 15–45 minutes |
| Epidural Steroid Injection | Procedure | An injection into the epidural space to reduce nerve inflammation causing arm or leg pain. | 15–30 minutes |
| Caudal Epidural Injection | Procedure | An epidural injection given through a natural opening at the base of the spine. | 15–20 minutes |
Patient guides
Questions patients ask
Can sciatica get better on its own?
Many episodes improve over weeks to months. Persistent or severe symptoms should be assessed.
Is MRI always needed for sciatica?
Not always. MRI is recommended when symptoms are severe, persist, or a procedure is planned.
This page is for general information. Whether a treatment is suitable for you is decided after an individual consultation.
