How Long Does Sciatica Last?

If you have sciatica, one of the first questions you are probably asking is: “How long is this going to last?”

The answer depends on what is irritating the nerve, how severe the problem is, and how long it has been present. Fortunately, many cases of sciatica improve significantly within several weeks to a few months, especially when the problem is caused by a lumbar disc injury and there is no significant nerve damage.[1,2]

What Exactly Is Sciatica?

Sciatica is not technically a diagnosis by itself. It describes symptoms caused by irritation or compression of a nerve in the lower back.

The sciatic nerve is the large nerve that travels from the lower spine through the buttock and down the leg. When one of the nerve roots that eventually forms the sciatic nerve becomes irritated, symptoms may include:

• Pain traveling into the buttock or leg
• Burning or shooting pain
• Numbness or tingling
• Pins and needles
• Leg or foot weakness

A herniated disc is one of the most common causes. Other causes can include spinal degeneration, narrowing around the nerves, or other mechanical problems in the lower back.

So, How Long Does Sciatica Usually Last?

For an uncomplicated case of lumbar radiculopathy—another term for irritation of a spinal nerve—symptoms often improve substantially during the first 6–12 weeks.[1]

However, that does not mean everyone is completely pain-free by six weeks. Recovery can be gradual.

A large randomized trial involving patients who had already experienced severe disc-related sciatica for 6–12 weeks found that both surgical and conservative treatment groups continued to improve over time. By one year, approximately 95% of patients reported recovery, although surgery produced faster relief in some patients.[2]

This supports an important point: sciatica lasting several weeks does not automatically mean that the nerve is permanently damaged or that surgery is necessary.

The Pain Can Improve Before the Disc Completely Heals

One of the most interesting things about disc-related sciatica is that the body can actually shrink or absorb part of a herniated disc on its own.

This is sometimes called spontaneous disc resorption. That sounds complicated, but it simply means your body recognizes the herniated piece of disc material and gradually breaks it down and removes it.

A 2024 meta-analysis involving 2,233 patients found that approximately 70% of lumbar disc herniations showed some degree of spontaneous resorption with conservative treatment, with most of the resorption occurring during the first six months.[3]

Interestingly, larger herniations can sometimes have a better chance of shrinking than smaller contained disc problems.

Research has reported regression rates of approximately:

• 13% for disc bulges
• 38–53% for disc protrusions
• 67–70% for disc extrusions
• 88–93% or higher for sequestrated discs[3,4]

A sequestrated disc means that a piece of disc material has completely separated from the main disc. Although this may sound more severe, the exposed disc material can create a stronger immune response, allowing the body to break it down more effectively.[4,5]

In other words, an ugly-looking MRI does not always mean an ugly long-term outcome.

Why Does Sciatica Sometimes Last Longer?

Some cases resolve quickly, while others can linger for months. Recovery may depend on factors such as:

• How irritated or compressed the nerve is
• The type and location of a disc herniation
• How long the nerve has been irritated
• Weakness or neurological changes
• Degenerative changes or spinal stenosis
• Repetitive sitting, lifting, or other aggravating activities
• Overall movement and physical conditioning

Sciatica that lasts longer than about 12 weeks is generally considered persistent or chronic and deserves a closer evaluation to determine why the nerve continues to be irritated.

Should You Just Wait for Sciatica to Go Away?

Not necessarily.

Although the natural history of sciatica is often favorable, the goal of conservative care is to reduce irritation of the nerve, restore normal movement and strength, and address mechanical factors that may continue aggravating the area. Research on lumbar radiculopathy generally supports beginning with conservative management during the initial weeks to months when there is no progressive neurological deficit or other serious condition.[1,6]

Depending on the cause, treatment may include exercise and rehabilitation, modification of aggravating activities, manual treatment, and other conservative therapies.

The important part is determining why the sciatic nerve is irritated in the first place.

When Should Sciatica Be Evaluated More Urgently?

Seek prompt medical evaluation if sciatica is accompanied by:

• Progressive leg or foot weakness
• Significant difficulty walking
• Loss of bowel or bladder control
• Numbness around the groin or inner thighs
• Severe or rapidly worsening neurological symptoms

These can indicate more significant nerve compression and should not simply be treated as routine sciatica.

The Bottom Line

Many cases of sciatica improve within about 6–12 weeks, but some take several months to fully settle down.[1,2]

If the problem comes from a herniated disc, there is also good news: research shows that the body can frequently shrink the herniated material naturally, particularly with extruded and sequestrated disc herniations.[3-5]

So if you have been told that you have a herniated disc, that does not automatically mean you are destined for surgery or permanent sciatica.

At Square One Health, our goal is to determine what is actually irritating the nerve and develop a treatment plan around the underlying problem rather than simply chasing the pain. If you have been dealing with pain, numbness, tingling, or weakness traveling into your leg, schedule an evaluation so we can determine what may be causing your sciatica and what treatment options make the most sense for you.

Ready to take the next step towards a pain-free, healthier life? Our team is here to help you on your wellness journey. Click the button below to Schedule an Appointment and start experiencing the benefits of integrated medicine today!

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References

1. Casey E. Natural history of radiculopathy. Phys Med Rehabil Clin N Am. 2011;22(1):1-5. doi:10.1016/j.pmr.2010.10.001.
2. Peul WC, van Houwelingen HC, van den Hout WB, et al. Surgery versus prolonged conservative treatment for sciatica. N Engl J Med. 2007;356(22):2245-2256. doi:10.1056/NEJMoa064039.
3. Zou T, Liu XY, Wang PC, et al. Incidence of spontaneous resorption of lumbar disc herniation: a meta-analysis. Clin Spine Surg. 2024;37(6):256-269. doi:10.1097/BSD.0000000000001490.
4. Chiu CC, Chuang TY, Chang KH, Wu CH, Lin PW, Hsu WY. The probability of spontaneous regression of lumbar herniated disc: a systematic review. Clin Rehabil. 2015;29(2):184-195. doi:10.1177/0269215514540919.
5. Hornung AL, Barajas JN, Rudisill SS, et al. Systematic review and meta-analysis of predictive factors for spontaneous regression in lumbar disc herniation. J Neurosurg Spine. 2023. PMID: 37486886.
6. Alentado VJ, Lubelski D, Steinmetz MP, Benzel EC, Mroz TE. Optimal duration of conservative management prior to surgery for cervical and lumbar radiculopathy: a literature review. Global Spine J. 2014;4(4):279-286. doi:10.1055/s-0034-1387807.