How long does sciatica last?

What is sciatica?

Sciatica is pain that travels from the lower back or buttock down the back or side of the leg, sometimes to the foot, caused by irritation or compression of a nerve root in the lower spine. The pain is often sharp, burning or electric and may come with numbness, tingling or weakness in the leg.

The most common cause is a herniated disc, where the soft centre of a disc pushes out and presses on a nerve root. Narrowing of the spinal canal, a slipped vertebra and, less often, other conditions can also cause it. How often sciatica is reported varies greatly between studies, from 1.2% to 43%, largely because definitions differ 2.

How long does sciatica usually take to improve?

Many people with sciatica from a disc herniation notice meaningful improvement within weeks, and most continue to improve over the following months. The course is not always smooth: pain can fluctuate, with good and bad days, and some people experience recurrences.

One reason for improvement is that herniated disc material often regresses. A systematic review found spontaneous regression in 96% of sequestrated discs, 70% of extruded discs, 41% of protrusions and 13% of bulges on repeat imaging 3. Inflammation around the nerve also settles with time.

What helps sciatica heal?

Staying as active as possible is recommended rather than bed rest. Walking, gentle movement and gradually returning to normal activities help. UK guidance recommends considering a group exercise programme and manual therapy as part of a treatment package that includes exercise, alongside psychological approaches where appropriate 1.

US guidance for back pain recommends starting with non-drug treatments such as superficial heat, massage and spinal manipulation for acute pain, and exercise, rehabilitation and mind-body approaches for longer-lasting pain 4. A physiotherapist can suggest positions and exercises that ease leg pain.

Which medicines are recommended for sciatica?

UK guidance advises against using gabapentinoids, other antiepileptic drugs, oral corticosteroids or benzodiazepines for sciatica, because evidence shows little benefit and significant side effects. Opioids are not recommended for chronic sciatica 1. Anti-inflammatory medicines may be used for short periods if suitable, taking into account stomach, kidney and heart risks.

For acute and severe sciatica, epidural injections of local anaesthetic and steroid may be considered in some cases 1. Medicines should support movement and activity, not replace them.

When is surgery considered?

Surgery to remove the part of the disc pressing on the nerve may be considered when pain and function have not improved with non-surgical treatment and imaging shows a problem that matches the symptoms 1. It often relieves leg pain faster, but many people who do not have surgery improve over time as well.

The decision depends on pain severity, function, how long symptoms have lasted, weakness and personal preferences. Rehabilitation after surgery helps restore strength and movement.

What are the warning signs of a serious problem?

Seek emergency care if sciatica comes with new difficulty passing urine or controlling the bladder or bowel, numbness around the genitals, buttocks or inner thighs, sexual dysfunction, or severe or rapidly worsening weakness in both legs. These may indicate cauda equina syndrome, which needs urgent treatment.

Also get prompt assessment for sciatica with fever, unexplained weight loss, a history of cancer, significant trauma or progressive weakness in one leg such as foot drop.

How can sciatica recurrence be reduced?

Regular exercise to maintain strength and flexibility, staying active, managing weight, gradual increases in heavy lifting and taking breaks from prolonged sitting help reduce recurrences. No single posture protects the back; varying positions matters more.

Understanding that flare-ups are common and usually settle can reduce fear and help people continue moving, which supports recovery.

Frequently asked questions