Skip to main content

Health condition · Clinically reviewed

Meralgia paraesthetica, the trapped nerve behind burning outer-thigh pain.

Burning, tingling or numbness over the outer thigh, with no weakness at all - a purely sensory nerve problem that usually settles with simple changes.

Jump to treatment
A radiographer guides a patient onto the bed of an advanced 3 Tesla MRI scanner in a London imaging suite

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 CKS, neurology society standards and peer-reviewed sources you can see at the end.

  • 03

    Current for 2026

    Reflects modern UK guidance on conservative care, nerve blocks and when surgery is considered.

Key facts

Meralgia paraesthetica at a glance.

The essentials, in plain English - what it is, why it happens, and what tends to help.

  • What it is

    Compression or entrapment of the lateral femoral cutaneous nerve (LFCN) as it passes under or through the inguinal ligament near the anterior superior iliac spine.

  • Purely sensory

    The LFCN carries sensation only - it never causes muscle weakness or reflex changes, which sets it apart from a trapped spinal nerve root.

  • Common triggers

    Obesity, pregnancy, tight clothing or belts, seatbelt injury, prolonged standing or walking, and previous pelvic or hip surgery.

  • Where it is felt

    Burning, tingling or numbness over the outer front of the thigh - usually on one side.

  • What eases it

    Sitting or flexing the hip typically settles symptoms; standing, walking or extending the hip makes them worse.

  • Outlook

    Often self-limiting, especially in pregnancy - most cases settle with simple conservative measures.

Why this guide matters

A benign nerve problem, often mistaken for something worse.

Meralgia paraesthetica is frequently confused with sciatica or a hip problem. The three points below shape everything else on this page.

  • It is a clinical diagnosis

    The history and examination usually give the answer - scans and nerve studies are reserved for atypical cases.

  • No weakness means no radiculopathy

    Because the LFCN is purely sensory, normal power and reflexes are reassuring and point away from a spinal cause.

  • Simple measures work for most people

    Weight loss, looser clothing and activity changes resolve a large proportion of cases without any procedure.

How the diagnosis is made

From burning thigh to a clear plan.

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

  1. 01

    Assessing

    Characteristic history

    Burning, tingling or numbness confined to the outer thigh, worse with standing or walking, better with sitting - a strong pointer on its own.

  2. 02

    Assessing

    Sensory examination

    Confirms sensory loss or heightened sensitivity in the LFCN distribution, with entirely normal power and reflexes.

  3. 03

    Assessing

    Pelvic compression test

    Pressure applied over the anterior superior iliac spine that relieves symptoms is a supportive clinical sign.

  4. 04

    Confirming

    Negative straight leg raise

    A normal straight leg raise and preserved reflexes help exclude lumbar radiculopathy such as sciatica.

  5. 05

    Confirming

    Nerve conduction studies

    Selective - specialist neurophysiology testing can confirm LFCN involvement when the diagnosis is uncertain.

  6. 06

    Confirming

    MRI lumbar spine or pelvis

    Selective - used to exclude other causes such as disc prolapse or a pelvic mass if the picture is atypical.

  7. 07

    Treating

    Diagnostic nerve block

    An ultrasound-guided injection at the entrapment site can confirm the diagnosis while also treating it.

Typical timeline: a first visit to a settled plan in weeks, not months.

Symptoms

What meralgia paraesthetica actually feels like.

A distinctive pattern of sensory symptoms over the outer thigh - and the features that mean something else needs to be considered.

  • Burning pain

    A persistent burning sensation over the anterolateral thigh - often the most troublesome feature.

  • Tingling and pins and needles

    A prickling or pins-and-needles sensation confined to the LFCN distribution.

  • Numbness

    Reduced or altered sensation over the outer front of the thigh, sometimes with patchy areas of heightened sensitivity.

  • Usually one-sided

    Symptoms are typically unilateral, reflecting entrapment on one side of the pelvis.

  • Worse with standing and walking

    Prolonged standing, walking or extending the hip stretches the nerve and provokes symptoms.

  • Improved by sitting

    Sitting down or flexing the hip slackens the nerve and typically brings relief within minutes.

  • No weakness or reflex change

    Because the LFCN is purely sensory, there is never any motor weakness or altered reflexes - a key distinguishing feature.

  • Red flag - atypical or progressive signs

    Any weakness, reflex change or bilateral symptoms points away from meralgia paraesthetica and needs further assessment.

Treatment

How meralgia paraesthetica is treated in the UK.

Conservative measures first, escalating to injections, and surgery only for severe, refractory disease.

  • Weight loss

    First-line where relevant - reducing abdominal and pelvic girth takes pressure off the nerve at the inguinal ligament.

  • Avoid tight clothing and belts

    Loosening waistbands, belts and tight trousers removes a common mechanical trigger and often brings quick improvement.

  • Activity modification

    Adjusting prolonged standing or walking and correcting posture reduces the stretch and pressure placed on the nerve.

  • Simple and neuropathic analgesia

    Paracetamol or NSAIDs for mild discomfort; gabapentin, pregabalin or amitriptyline for persistent neuropathic pain - specialist-guided.

  • Ultrasound-guided nerve injection

    A local steroid and anaesthetic injection at the site of entrapment can be both diagnostic and therapeutic - specialist pain medicine.

  • Physiotherapy

    Hip flexor stretching and posture advice, used selectively alongside other measures.

  • Treating the underlying cause

    Managing diabetes or obesity, or addressing a recent pelvic or hip procedure, reduces the chance of recurrence.

  • Surgical decompression or neurectomy

    Reserved for severe, refractory cases that have not responded to conservative care or injections - specialist neurosurgery or orthopaedics.

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 specialist knows your history and can tell you which parts apply to you. If in doubt, get seen.

  • NICE Clinical Knowledge Summaries (CKS). Meralgia paraesthetica.

  • Association of British Neurologists. Guidance on peripheral mononeuropathies.

  • Royal College of Physicians. Standards for neurophysiology referral.

  • British Pain Society. Guidance on image-guided peripheral nerve injections.

Red flags

When outer-thigh symptoms need a closer look.

Most cases are straightforward. These are the situations that aren't - and where further assessment is needed.

  • Motor weakness

    Any weakness in the leg is not explained by meralgia paraesthetica and points to a different diagnosis, such as a lumbar radiculopathy.

  • Reflex changes

    Altered knee or ankle reflexes suggest involvement beyond a purely sensory peripheral nerve and warrant further work-up.

  • Bilateral symptoms

    Symptoms on both sides are unusual for meralgia paraesthetica and should prompt review for a spinal or systemic cause.

  • Positive straight leg raise

    A positive straight leg raise suggests lumbar nerve root irritation, such as sciatica, rather than LFCN entrapment.

  • New back pain or bladder symptoms

    Back pain with bladder or bowel disturbance needs urgent assessment to exclude cauda equina syndrome.

  • Rapid escalation or a pelvic mass

    Rapidly worsening symptoms or a palpable pelvic mass need prompt imaging to exclude a structural cause for the nerve compression.

  • Uncontrolled diabetes

    Poorly controlled diabetes can contribute to peripheral nerve entrapment and deserves review alongside the local nerve problem.

  • Symptoms after pelvic or hip surgery

    New anterolateral thigh symptoms following pelvic or hip surgery should be reported to the surgical team.

Living with it

A manageable nerve problem, with a clear ladder.

Four things that make the biggest difference day to day - loosening clothing, staying reassured, pacing activity and knowing when to ask for an injection.

A quiet reminder

Small changes at the waistband often matter more than any pill.

Loosening a belt or swapping tight trousers can bring relief within days for many people.

  1. 01 Loosen up

    Ditch tight waistbands and belts

    Looser clothing around the hips is one of the simplest and most effective changes most people can make.

  2. 02 Reassure

    This is a benign, often self-limiting condition

    Particularly in pregnancy, symptoms very often resolve on their own once the underlying pressure eases.

  3. 03 Pace

    Break up long periods of standing or walking

    Short seated breaks that flex the hip slacken the nerve and reduce flare-ups through the day.

  4. 04 Escalate

    Ask about an injection if symptoms persist

    A targeted nerve block can bring lasting relief when weight loss and clothing changes are not enough.

Frequently asked

Everything we get asked about meralgia paraesthetica.

Quick answers on causes, diagnosis, sciatica comparisons and treatment options.

  • What is meralgia paraesthetica?

    It is compression or entrapment of the lateral femoral cutaneous nerve (LFCN) as it passes under or through the inguinal ligament near the front of the pelvis. Because this nerve is purely sensory, it causes burning, tingling or numbness over the outer thigh without any muscle weakness.

  • What causes it?

    Common causes include obesity, pregnancy, tight clothing or belts, seatbelt injury, prolonged standing or walking, diabetes, previous pelvic or hip surgery, and direct trauma to the area near the hip.

  • How is it different from sciatica?

    Sciatica involves a lumbar nerve root and typically causes pain, weakness or reflex changes that can extend down to the foot. Meralgia paraesthetica is confined to a purely sensory nerve, so there is never any weakness, and the straight leg raise test is normal.

  • Do I need a scan?

    Not usually. Diagnosis is normally clinical, based on the history and examination. Nerve conduction studies or an MRI of the lumbar spine or pelvis are reserved for atypical presentations or when the diagnosis is uncertain.

  • Will it go away on its own?

    Often, yes - particularly when it is related to pregnancy or a temporary weight change. Many cases improve significantly with weight loss, looser clothing and activity modification alone.

  • What if conservative measures do not work?

    The next step is usually an ultrasound-guided steroid and local anaesthetic injection at the site of entrapment, which can be both diagnostic and therapeutic. Surgical decompression or neurectomy is reserved for severe, refractory cases.

Related content

Keep reading.