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Health condition · Clinically reviewed

Nerve compression, from carpal tunnel to sciatica - and how each is treated.

Numbness, tingling and weakness along a nerve’s own path usually have a mechanical cause - and a clear, stepped way to fix it.

Jump to treatment
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Why trust this guide

  • 01

    Clinically reviewed

    Written by our editorial team and reviewed by a registered UK clinician before publication.

  • 02

    Sourced from guidance

    Checked against NICE, NHS and peer-reviewed neurology sources you can see at the end.

  • 03

    Current for 2026

    Reflects modern UK practice across the common entrapment sites, from splinting to surgical decompression.

Key facts

Nerve compression at a glance.

The essentials, in plain English - what it is, where it happens, and how it’s treated in the UK today.

  • What it is

    A peripheral nerve squeezed by surrounding bone, tendon, fascia or swelling, disrupting its signal along a predictable path.

  • Common sites

    Carpal tunnel (wrist), cubital tunnel (elbow), meralgia paraesthetica (thigh), sciatica (spine), tarsal tunnel (ankle), thoracic outlet.

  • Core symptoms

    Numbness, tingling and pins and needles in the nerve’s territory, plus weakness in the muscles it supplies.

  • Worse at night

    Several entrapments, carpal tunnel especially, flare overnight when the wrist curls during sleep.

  • Confirming tests

    Nerve conduction studies and EMG localise and grade the compression; MRI or ultrasound find the structural cause.

  • Treatment ladder

    Activity change and splinting first, then injection or physiotherapy, with surgical decompression for resistant or severe cases.

Why this guide matters

One mechanism, six familiar names.

Carpal tunnel, sciatica and thoracic outlet syndrome sound unrelated, but they share the same underlying problem and a similar approach to fixing it.

  • The site tells you the nerve

    Numbness and weakness follow a predictable pattern for each nerve, which is why location matters so much in diagnosis.

  • Most cases are managed conservatively

    Splinting, activity change and physiotherapy resolve a large proportion of entrapments without surgery.

  • Delay can cost recovery

    Persistent, severe compression can cause lasting nerve damage, so escalation matters when conservative care isn’t working.

How the diagnosis is made

From first symptoms to a confirmed diagnosis.

The steps a UK GP or neurologist will normally follow, in order - so you know what to expect and why.

  1. 01

    Assessing

    History and pattern-matching

    Where the numbness and weakness sit tells the story - each nerve has a signature distribution.

  2. 02

    Assessing

    Provocative tests

    Site-specific manoeuvres such as Tinel’s sign and Phalen’s test at the wrist reproduce symptoms and localise the problem.

  3. 03

    Assessing

    Strength and sensation exam

    Grading motor power and light-touch or pinprick sensation shows how much the nerve is already affected.

  4. 04

    Confirming

    Nerve conduction studies and EMG

    These confirm the diagnosis, localise the compression and grade its severity from mild to advanced.

  5. 05

    Confirming

    Imaging when structure is unclear

    MRI or ultrasound can show a cyst, tumour, disc prolapse or anatomical variant causing the entrapment.

  6. 06

    Preparing

    Screening for contributing disease

    Diabetes, hypothyroidism, pregnancy-related fluid retention and rheumatoid disease all raise entrapment risk and are worth checking.

  7. 07

    Preparing

    Specialist referral if needed

    Neurology, orthopaedic or hand surgery review is arranged for persistent, severe or progressive cases, or before any surgical decompression.

Typical timeline: a first visit to a confirmed diagnosis in a few weeks.

Symptoms

What nerve compression actually feels like.

The classic mix of numbness, tingling and weakness following the affected nerve’s path. And the features that mean it’s time to escalate.

  • Numbness and tingling

    Pins and needles confined to the nerve’s own sensory territory - not the whole hand or leg.

  • Muscle weakness

    Weak grip, foot drop or thumb weakness, depending on which nerve and muscles are affected.

  • Night-time flares

    Carpal tunnel in particular often wakes people in the small hours, easing once the hand is shaken out.

  • Position-related pain

    Symptoms that worsen with a specific posture, such as leaning on the elbow or prolonged standing.

  • Burning or electric pain

    A sharp, shooting or burning quality along the nerve’s path, sometimes triggered by tapping over it.

  • Thenar or muscle wasting

    Visible loss of bulk in muscles the nerve supplies - a sign of longer-standing or more severe compression.

  • Clumsiness and dropping things

    Reduced fine sensation and grip strength can make small tasks like buttons or jar lids harder.

  • Red flag - rapid or severe weakness

    Fast-progressing weakness or new bladder or bowel symptoms need same-day assessment.

Treatment

How nerve compression is treated in the UK.

Conservative measures first, with injection and physiotherapy as useful next steps, and surgical decompression reserved for severe or resistant disease.

  • Activity and ergonomic change

    Adjusting posture, workstation set-up and repetitive movements often eases mild, early entrapment.

  • Splinting

    A neutral wrist splint at night is a mainstay for carpal tunnel and helps many other entrapments too.

  • Corticosteroid injection

    A targeted injection around the nerve calms local inflammation and can bring useful, if sometimes temporary, relief.

  • Physiotherapy

    Nerve gliding exercises, strengthening and manual therapy support recovery and reduce recurrence.

  • Weight and swelling management

    Losing excess weight and treating fluid retention, including in pregnancy, reduces pressure on the nerve.

  • Treating the underlying cause

    Optimising diabetes control or treating hypothyroidism removes a major driver of entrapment risk.

  • Pain and nerve-modulating medication

    Short-term analgesia or a nerve-pain agent can help while other measures take effect.

  • Surgical decompression

    For severe, progressive or treatment-resistant cases, releasing the tissue compressing the nerve is highly effective and often curative.

What this guide is based on

The sources behind every claim on this page.

UK national guidance and specialist society standards, current at the time of last review.

Key references

Guidelines and standards we relied on.

A quiet reminder

This guide is for information, not medical advice.

Your GP or neurologist knows your history and can tell you which parts apply to you. If in doubt, get seen.

  • NICE. Carpal tunnel syndrome and related peripheral neuropathies - clinical guidance.

  • NHS. Nerve pain and nerve compression - patient information.

  • Royal College of Physicians / Association of British Neurologists. Peripheral nerve entrapment guidance.

  • American Academy of Orthopaedic Surgeons. Clinical practice guidelines on carpal and cubital tunnel syndrome.

Red flags

When nerve compression needs urgent attention.

Most entrapments are manageable in primary care. These are the situations that aren’t - and where a specialist opinion is needed quickly.

  • Rapidly progressive weakness

    Fast-worsening weakness over days suggests a more aggressive process and needs urgent neurology assessment.

  • Cauda equina symptoms

    New bladder or bowel disturbance, saddle numbness or bilateral leg weakness with sciatica is a surgical emergency.

  • Muscle wasting

    Visible loss of muscle bulk signals longer-standing, more severe compression and should not be left untreated.

  • Bilateral or widespread symptoms

    Numbness or weakness in several nerve territories at once points away from a simple local entrapment.

  • Sudden onset after trauma

    A fracture, dislocation or penetrating injury with new nerve symptoms needs same-day assessment.

  • Associated systemic illness

    Fever, weight loss or night sweats alongside nerve symptoms warrants a broader work-up.

  • Failure to improve with treatment

    No response to splinting, injection and activity change after several months should prompt specialist review.

  • Suspected tumour or mass

    A palpable lump along the nerve’s course, or imaging showing a mass, needs prompt surgical referral.

  • Complete sensory loss

    Total loss of feeling, rather than tingling, suggests more advanced nerve injury and a shorter window for recovery.

Living with it

A treatable problem, with a clear ladder.

Four things that make the biggest difference day to day - noticing your trigger position, using your splint, staying gently active and not waiting out weakness.

A quiet reminder

Numbness can wait a little. Weakness shouldn’t.

Sensory symptoms are uncomfortable but tend to recover well - persistent weakness is the sign that deserves a prompt review.

  1. 01 Posture

    Mind the trigger position

    Notice what brings symptoms on - a bent elbow, crossed legs or a flexed wrist - and change position before pain builds.

  2. 02 Splint

    Wear the splint as advised

    Consistent night-time splinting for carpal tunnel often does more than occasional daytime use.

  3. 03 Move

    Keep gentle movement going

    Nerve gliding exercises and general activity help nerves recover - complete rest is rarely the answer.

  4. 04 Escalate

    Don’t wait out weakness

    Numbness that persists is uncomfortable but weakness that persists can become permanent - ask for review if it isn’t settling.

Frequently asked

Everything we get asked about nerve compression.

Quick answers on common entrapment sites, diagnosis and when surgery is needed.

  • What is nerve compression?

    It happens when a peripheral nerve is squeezed by nearby bone, tendon, muscle, fascia or swelling as it passes through a narrow space in the body. The pressure disrupts the nerve’s signal, causing numbness, tingling, pain and sometimes weakness in the area it supplies.

  • What are the most common types?

    Carpal tunnel syndrome at the wrist is the most familiar, followed by cubital tunnel syndrome at the elbow, sciatica from nerve root compression in the spine, meralgia paraesthetica at the thigh, tarsal tunnel syndrome at the ankle, and thoracic outlet syndrome near the collarbone.

  • Why are my symptoms worse at night?

    For carpal tunnel in particular, the wrist tends to curl while you sleep, which increases pressure on the median nerve. Shaking or dangling the hand out of bed often brings quick, if temporary, relief.

  • How is nerve compression diagnosed?

    A clinician will examine the pattern of numbness and weakness and use provocative tests specific to the site, such as Tinel’s sign or Phalen’s test at the wrist. Nerve conduction studies and EMG confirm and grade the compression, and MRI or ultrasound can identify a structural cause.

  • Will I need surgery?

    Not always. Many cases improve with splinting, activity changes, physiotherapy or a corticosteroid injection. Surgical decompression is reserved for severe, progressive or treatment-resistant compression, and it is generally very effective when needed.

  • Can nerve compression come back after treatment?

    It can, particularly if the underlying cause, such as repetitive strain, diabetes or thyroid disease, isn’t addressed. Keeping up ergonomic habits and treating contributing conditions reduces the chance of recurrence.

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