Nerve pain that shoots from the lower back down the leg can be unsettling, especially when it doesn’t improve with rest. Many people ask the same question: How long should sciatica last, and when should I stop waiting it out?
While sciatica often improves over time, persistent or worsening symptoms may signal the need for medical assessment.
Key Pointers
- Sciatica is nerve pain caused by irritation or compression of the sciatic nerve
- Mild cases may improve within a few weeks
- Pain lasting beyond 6–8 weeks should be reviewed
- Numbness, tingling, or weakness suggest nerve involvement
- Early assessment helps guide appropriate treatment and prevent prolonged discomfort
What Is Sciatica and Why Does It Cause Nerve Pain?
Sciatica refers to pain that follows the path of the sciatic nerve, typically starting in the lower back or buttock and travelling down the leg.
It commonly occurs when a spinal structure, such as a disc or bone spur, presses on or irritates the nerve.
Common causes include:
- Slipped (herniated) disc
- Degenerative changes in the spine
- Spinal narrowing
- Muscle tightness affecting nerve pathways
How Long Does Sciatica Usually Last?
The duration of sciatica varies depending on the cause and severity.
- Acute sciatica: Often improves within 2–6 weeks
- Subacute sciatica: May last 6–12 weeks
- Chronic sciatica: Symptoms persist beyond 3 months
Many mild cases settle with conservative care, but ongoing nerve pain should not be ignored.
When Does Sciatica Become a Concern?
Sciatica may need medical review if:
- Pain lasts longer than 6–8 weeks
- Pain worsens instead of improving
- Symptoms interfere with walking, sitting, or sleep
- Numbness or tingling spreads
- Leg weakness develops
These features suggest continued nerve compression, which benefits from timely assessment.
What’s the Difference Between Temporary Nerve Irritation and Chronic Sciatica?
Temporary nerve irritation often:
- Improves gradually
- Responds to rest and physiotherapy
- Does not cause weakness
Chronic sciatica may:
- Persist despite rest
- Cause ongoing tingling or numbness
- Affect strength or coordination
Understanding this difference helps determine when further investigation is appropriate.
How Is Persistent Sciatica Evaluated?
Assessment typically includes:
- Clinical examination
- Review of symptom duration and pattern
- Nerve function testing
If symptoms suggest nerve compression, imaging such as an MRI scan may be recommended to identify the underlying cause.
What Are the Treatment Options for Ongoing Sciatica?
Treatment depends on severity and findings.
Conservative options may include:
- Activity modification
- Physiotherapy
- Pain-relieving or nerve-targeted medication
Other options (when appropriate):
- Targeted injections
- Surgical discussion if nerve symptoms progress or persist
Most patients improve without surgery, but monitoring is important.
FAQs About Persistent Sciatica
Q1: Can sciatica go away on its own?
Yes, mild cases often improve within weeks, but persistent symptoms should be reviewed.
Q2: Is leg numbness a serious sign?
Numbness suggests nerve involvement and should not be ignored if it persists.
Q3: Should I rest completely with sciatica?
Gentle movement is usually better than prolonged bed rest, unless advised otherwise.
Q4: When is an MRI needed for sciatica?
MRI is considered when symptoms persist, worsen, or involve weakness.
Q5: Does long-term sciatica always require surgery?
No. Many cases improve with non-surgical treatment, but assessment guides decisions.
Persistent Nerve Pain Deserves Proper Attention
Sciatica doesn’t always mean something serious, but pain that lingers or progresses warrants medical evaluation. Early clarity helps prevent prolonged discomfort and supports appropriate recovery.
Nerve Pain That Isn’t Improving? Don’t Keep Waiting
If sciatica symptoms are lasting longer than expected or affecting your daily life, a proper assessment can help identify the cause and guide treatment.
Mash Spine & Orthopaedics, Farrer Park Medical Centre
+65 6518 9545
Book a consultation for personalised spine care
