Peripheral neuropathy assessment (Assessment of peripheral neuropathy (nerve damage))
An assessment to find out whether numbness, tingling, pain or weakness is caused by damage to the peripheral nerves, how severe it is, and what is causing it.
✓ Medically reviewed by a GMC-registered consultant · last reviewed September 2026 · next review September 2027 · how we review
In short
- The assessment works out whether your symptoms are due to nerve damage, how severe it is, and what is causing it.
- Blood tests are central, because common causes such as diabetes and vitamin B12 deficiency are treatable; nerve tests are not always needed.
- In many people no single clear cause is found despite a full search, and the focus then moves to managing symptoms and protecting the feet.
- Nerve damage does not always recover, so finding and treating a cause early is the main goal.
A plain-English summary. The detail — including risks and recovery — is below.
At a glance
A general guide. Your specialist will give you advice for your situation.
Confirms whether symptoms are due to nerve damage rather than another problem
Rapidly worsening weakness, or weakness with breathing, swallowing or bladder and bowel problems, which needs urgent hospital assessment rather than a...
You are examined and, if you have nerve conduction studies or EMG, you may feel brief discomfort. You can usually go straight back to normal activities...
A clear explanation of whether there is a neuropathy, its severity and type, and any cause found.
You are examined and, if you have nerve conduction studies or EMG, you may feel brief discomfort. You can usually...
Tests for common causes such as diabetes and vitamin B12 deficiency are taken. Results usually follow within days...
Nerve conduction studies and EMG are interpreted and reported, often the same day or shortly after, showing the...
Specialised blood tests, scans, a lumbar puncture or, rarely, a nerve biopsy may be arranged and reported...
What is a peripheral neuropathy assessment?
A peripheral neuropathy assessment is used to find out whether symptoms such as numbness, tingling, burning pain, or weakness – usually starting in the feet and hands – are due to damage to the peripheral nerves, which carry signals between the brain and spinal cord and the rest of the body. It also tries to work out how severe any damage is, what type it is, and, importantly, what is causing it.
The assessment usually starts with a GP asking about your symptoms and examining sensation, strength and reflexes, and arranging blood tests, especially to look for common causes such as diabetes or vitamin B12 deficiency. Some people are referred to a neurologist for further assessment, which may include nerve conduction studies and electromyography (EMG) – tests that measure how well the nerves and muscles are working.
The assessment gathers information; it is not a treatment. Finding the cause matters, because some causes are treatable and treating them can stop the nerve damage getting worse. In many people, though, no clear single cause is found despite a thorough search, and the focus then shifts to managing symptoms and protecting the feet. Nerve damage that has already happened does not always recover, so early assessment and finding any treatable cause is worthwhile.
Types, options & approaches
There may be different ways to do this. The right approach depends on the clinical question and your circumstances.
Examination compared with nerve conduction studies
| Feature | Examination and blood tests | Nerve conduction studies |
|---|---|---|
| What it does | Detects the pattern and common causes | Measures nerve function directly |
| Comfort | Usually not painful | Brief electric pulses, mild discomfort |
| Shows severity/type | Partly | More precisely (axonal or demyelinating) |
| Finds the cause | Often, via blood tests | Usually not, on its own |
| Needed for everyone | Yes | No – used in selected cases |
Nerve conduction studies are not needed to diagnose every neuropathy and rarely reveal the cause by themselves. They are most useful for confirming the diagnosis, judging severity and type, and guiding further tests.
Preparing for your test
- Make a note of your symptoms – where they are, what they feel like, when they started and how they have changed.
- Bring a full list of your medicines and supplements, as some can cause neuropathy.
- Note your alcohol intake honestly, as heavy drinking is a recognised cause.
- Tell the team about diabetes, thyroid problems, kidney disease or any family history of nerve problems.
- Mention previous results, including any blood sugar or vitamin levels.
- If you are having nerve conduction studies, keep your skin clean and avoid heavy moisturiser on the day, and tell staff about any pacemaker or bleeding problem before EMG.
- Write down your questions, including what the result would change and what happens if no cause is found.
What happens
When you see a clinician, they ask about your symptoms – where they are, what they feel like, and how they have progressed – and examine you, testing sensation, strength, reflexes and balance, usually starting at the feet. This often shows the pattern of the problem and points towards the likely cause. Blood tests are arranged to look for common, treatable causes such as diabetes or vitamin B12 deficiency.
If the diagnosis or cause is unclear, you may be referred to a neurologist. Some people then have nerve conduction studies, where small electrodes on the skin deliver tiny electric pulses and a machine measures how fast and strongly the nerves carry signals. This is often combined with EMG, where a fine needle in a muscle records its electrical activity. These tests can feel uncomfortable but are brief.
Depending on the findings, further tests may be arranged, such as more specialised blood tests, scans, a lumbar puncture, or, rarely, a nerve biopsy. The clinician brings the picture together to say whether you have a neuropathy, how severe and what type it is, and what the likely cause is. In many people no single clear cause is found, and the conversation then turns to managing symptoms and protecting the feet.
Is this test right for me?
A good consultation should explore whether it's the right choice for you now — including reasons to wait or consider something else.
May not be suitable if…
- Rapidly worsening weakness, or weakness with breathing, swallowing or bladder and bowel problems, which needs urgent hospital assessment rather than a routine clinic.
- As a way to obtain nerve conduction studies when the cause is already clear and the tests would not change management.
- As a substitute for basic blood tests that look for common, treatable causes.
- When symptoms are clearly due to another problem, such as a trapped nerve in the spine, which needs a different assessment.
Delay or rearrange if…
- You have a temporary cause, such as a recent illness or medicine change, that may settle.
- Blood tests for common causes have not yet been done, which may make nerve tests unnecessary.
- You are on blood thinners or have a bleeding problem and EMG is planned, until this is reviewed.
- Key information is missing, such as a medicines list, alcohol history or previous results.
Alternatives to discuss
- Initial assessment and blood tests by a GP before specialist referral or nerve tests.
- Treating an identified cause, such as a vitamin deficiency or diabetes, and reassessing.
- A period of review if symptoms are mild and no cause is yet found.
- Referral to a specialist neuromuscular centre for rarer or unclear causes.
- Focusing on symptom management and foot protection where no treatable cause is found.
Before you decide
Use this as a shared-decision checklist. The aim is not just “can this be done?”, but whether it is right for you, now, with the risks and alternatives clearly understood.
What matters most to me?
Think about symptoms, daily life, work, caring responsibilities, sport, fertility, travel, appearance and anxiety — the right choice depends on your priorities, not just the medical facts.
What are all my options?
Ask about waiting, monitoring, medicines, rehabilitation, a smaller or larger procedure, a different test, NHS referral, or a second opinion where that would help.
What would make me pause?
Active infection, pregnancy, unstable medical problems, smoking, medicines that increase bleeding, poor support at home, or feeling pressured are all reasons to slow down and get tailored advice.
What happens if I do nothing today?
For some problems, waiting is safe; for others, delay can make treatment harder. A good consultation should explain the trade-off in plain English.
Benefits
- Confirms whether symptoms are due to nerve damage rather than another problem
- Identifies treatable causes such as diabetes, vitamin B12 deficiency or thyroid problems
- Shows how severe the nerve damage is and what type it is
- Guides treatment, including treating the cause and managing pain
- Highlights the need for foot care to prevent injury and ulcers
- Provides a baseline so any change over time can be judged
Risks & complications
- Brief discomfort from the electric pulses during nerve conduction studies
- Mild ache or small bruising after EMG where the needle was used
- No single clear cause being found despite a thorough search
- Needing several tests over time before the picture is complete
- A normal nerve test despite symptoms, if small nerve fibres are involved
- An unexpected finding that leads to further investigation
- Needing referral to a specialist centre for rarer causes
- A small risk of bleeding or infection from EMG, particularly with bleeding problems or blood thinners
- A nerve biopsy, if needed, can leave a numb patch and a small wound
- False reassurance if an early or small-fibre neuropathy is not detected by standard tests
The assessment is mostly safe – the examination and blood tests carry no real risk, and nerve conduction studies are uncomfortable rather than harmful. EMG involves a fine needle and carries a small risk of bruising, bleeding or infection, so tell staff about blood thinners or bleeding problems. The bigger issues are diagnostic: standard tests can be normal in small-fibre neuropathy, and in many people no single cause is found. Ask what the tests will change and what happens if the cause stays unclear.
Published figures to discuss
The examination and blood tests carry no real physical risk, and nerve conduction studies are uncomfortable rather than harmful; EMG involves a fine needle with a small risk of bruising, bleeding or infection. The more important uncertainty is diagnostic. Standard nerve conduction studies test large nerve fibres, so they can be normal when only small fibres are affected, and they rarely reveal the underlying cause by themselves. A substantial proportion of neuropathies remain without a clear cause despite thorough assessment, so the figures below are best treated as a guide to that uncertainty rather than fixed rates.
| Figure | Reported range | How to interpret it | Source / confidence |
|---|---|---|---|
| No clear cause found despite full assessment | Reported in a substantial minority of cases, often cited around a quarter or more | Idiopathic neuropathy is common; the focus then shifts to symptom management and foot protection. | Guide sourcesClinical context |
| Hidden glucose problems in 'unexplained' neuropathy | Around 40% of idiopathic cases have prediabetes in some studies | This is why glucose testing is important even when an initial cause is not obvious. | Diagnosis of peripheral neuropathy (review) – PMCncbi.nlm.nih.govPublished figure |
| Small-fibre neuropathy with normal nerve conduction tests | Recognised | Burning pain and autonomic symptoms can require different testing or clinical diagnosis. | Diagnosis of peripheral neuropathy (review) – PMCncbi.nlm.nih.govSource-linked context |
| Foot injury or ulcer risk when sensation is reduced | Clinically important | Footwear, daily inspection and diabetes/vascular risk management matter even while the cause is being investigated. | Diagnosis of peripheral neuropathy (review) – PMCncbi.nlm.nih.govSource-linked context |
These are literature figures, not a personalised prediction. Your own risks and likely benefits depend on your circumstances, your health, and how your care is carried out and followed up.
What happens afterwards
There is little to recover from physically. After nerve tests you can usually carry on as normal. What matters most afterwards is understanding whether you have a neuropathy, what is causing it, and what can be done about both the cause and the symptoms.
- No lasting after-effects from the examination or nerve tests
- A little tenderness or small bruising where an EMG needle was used
- Waiting days to weeks for blood tests or further investigations
- Learning that no single cause is found, which is common and not a failure of the assessment
- Being given advice on foot care and symptom management while the cause is sought or managed
Aftercare
- Make sure you understand whether you have a neuropathy, its severity and type, and any cause found.
- If a treatable cause is found, follow the treatment and ask how you will know if it is helping.
- Look after your feet – check them daily, wear well-fitting shoes, and report any sores, especially if you have diabetes.
- Ask about options for managing nerve pain if it is troubling you.
- Keep good control of any underlying condition, such as diabetes, which can slow progression.
- Know which symptoms mean you should seek help, such as rapidly worsening weakness.
- Use reliable information rather than relying on adverts for supplements or unproven treatments.
- A clear note of your symptoms and how they have changed
- An up-to-date list of medicines and supplements
- An honest note of alcohol intake
- Previous results such as blood sugar or vitamin levels
- Information about any pacemaker or bleeding problem before EMG
- Your questions about cause, treatment and what happens if none is found
- Knowing how and when you will get your results
⚠ Get urgent help if…
- Rapidly worsening weakness or numbness over hours to days – seek urgent help
- Weakness affecting both legs, or difficulty walking or standing, that is getting worse quickly
- Numbness or weakness with problems controlling your bladder or bowels – seek urgent help
- Difficulty breathing or swallowing alongside spreading weakness – call 999
- A foot wound, ulcer or infection that is not healing, especially with diabetes
- New severe pain with redness, swelling or fever
- Any symptom your clinician told you to treat as urgent
Who to contact: your clinician, clinic or test provider first (keep their number to hand). For urgent advice when you can't reach them, call NHS 111. In an emergency, call 999.
General guidance — it doesn't replace the specific advice your specialist gives you.
Results & realistic expectations
A useful result is a clear answer to three questions: do you have a peripheral neuropathy, how severe and what type is it, and what is causing it. Where a treatable cause is found, such as vitamin B12 deficiency or poorly controlled diabetes, treating it can stop the damage progressing and is the most valuable outcome. Nerve conduction studies help confirm the diagnosis and show the type, but they rarely reveal the cause by themselves.
It is important to be realistic. In a significant number of people, no single clear cause is found despite a thorough search, and the aim then becomes managing symptoms and protecting the feet. Standard nerve tests can also be normal when only small nerve fibres are affected, so a normal test does not always mean there is no neuropathy. Nerve damage that has already occurred does not always recover, which is why early assessment matters.
A neuropathy assessment reflects the situation at the time. Neuropathy can be stable, slowly progressive, or sometimes improve if a cause is treated, so the picture and plan may need reviewing. If symptoms change or worsen, repeat assessment or further tests may be needed. Where a cause such as diabetes is involved, ongoing control influences how the neuropathy behaves over the long term.
Related tests, treatments or support
A neuropathy assessment is usually combined with blood tests to look for causes, and sometimes nerve conduction studies and EMG. Depending on the findings it may lead to scans, a lumbar puncture or, rarely, a nerve biopsy. It often sits alongside managing an underlying condition such as diabetes, treating nerve pain, and foot-protection advice, especially for people with diabetes.
Follow-up & long-term care
After the assessment you should know whether you have a neuropathy, its cause if found, and the plan. If a cause is treated, follow-up checks whether it is helping and whether symptoms are stable. If no cause is found, review over time may pick up a cause that was not initially apparent, or confirm that symptoms are stable. You should be told who to contact if symptoms worsen quickly.
- Good control of any underlying condition, such as diabetes, to limit progression
- Daily foot checks and well-fitting footwear to prevent injury and ulcers
- Regular review of nerve-pain treatment if used, to balance benefit and side effects
- Repeat assessment if symptoms change or a cause was not initially found
- Avoiding or limiting alcohol and other things that can worsen nerve damage
Repeat, follow-on and what comes next
- A cause not found at first is sometimes identified on review or with further tests.
- Standard nerve tests may be normal in small-fibre neuropathy, needing different assessment.
- Treatment of an underlying cause may stabilise or slow, but not always reverse, the neuropathy.
- Repeat assessment may be needed if symptoms change or progress.
Ask what happens if the result is unclear or needs repeating, and what is included if further tests or follow-up are needed.
What good aftercare looks like
- A clear explanation of whether there is a neuropathy, its severity and type, and any cause found.
- Treatment of any identified cause, with a way to judge whether it is helping.
- Practical foot-care advice and symptom management, especially for people with diabetes.
- A named contact and a plan for review, including what to do if weakness worsens quickly.
What affects the cost
Costs vary a great deal between people and providers, and we don't publish prices. What matters is understanding what drives the cost and making sure your quote is complete. The main things that affect it:
- The length and complexity of the consultation
- Whether it is with a general clinician or a neurologist
- Blood tests, which can be extensive depending on the suspected cause
- Whether nerve conduction studies and EMG are needed and who reports them
- Any further tests such as scans, a lumbar puncture or a nerve biopsy
- Follow-up appointments and review over time
- Reports or letters requested for other purposes
- The consultation fee and what it covers
- Whether blood tests are included or charged separately
- The cost of nerve conduction studies and EMG if needed, including reporting
- The cost of any further tests, charged separately
- The cost and timing of any follow-up appointment
- What happens, and what it costs, if no cause is found and review is needed
- The cancellation policy
On the NHS? Peripheral neuropathy assessment is available on the NHS when clinically indicated, often starting with a GP and blood tests; private assessment may be used for speed, choice or a second opinion.
You're entitled to your total cost in writing — including reports, follow-up and what happens if the result is inconclusive — before you decide.
Consent traps and marketing red flags
These are not small details. They are often where patients lose choice, time to reflect, or realistic expectations.
Consent traps
- Ordering nerve conduction studies that will not change management, or implying they always find the cause.
- Not explaining that standard nerve tests can be normal in small-fibre neuropathy.
- Not searching properly for treatable causes such as diabetes or vitamin B12 deficiency.
- Not warning about EMG's small bleeding and infection risk in people on blood thinners.
- Not setting out what happens if no cause is found.
Marketing red flags
- Promising that nerve tests will always identify the cause of neuropathy.
- Selling supplements or 'nerve repair' programmes that claim to reverse established nerve damage.
- Offering extensive tests without first checking for common, treatable causes.
- Implying a normal nerve test rules out all neuropathy.
Choosing a specialist safely
- Check the specialist is on the GMC Specialist Register for this area.
- Make sure they work at a CQC-registered service, and look for membership of the relevant Royal College or professional body.
- You're entitled to time to consider and to have your questions answered before you agree — the specialist who looks after you should explain it, not a salesperson.
- Be wary of pressure: time-limited offers or deposits taken before you've had time to think are red flags, not bargains.
- You're entitled to your total cost in writing — including any follow-up — before you decide.
Questions to ask your medical professional
Take this to your consultation. A good specialist will welcome every one of these.
- Do I have a peripheral neuropathy, and how severe and what type is it?
- What blood tests are you doing, and which treatable causes are you looking for?
- Do I need nerve conduction studies or other tests, and what would they change?
- What happens if no clear cause is found?
- What can be done to treat the cause and to manage my symptoms?
- How should I look after my feet, and what symptoms mean I should seek help quickly?
- Are you on the GMC Specialist Register for this area, and which Royal College or professional body are you a member of?
- Will you be the specialist who carries out my test, and who looks after me afterwards?
- What are the risks for someone like me, and how often do your own patients have a problem or need it repeated or redone?
- What does a realistic result look like — and what can this test not achieve?
- What are my options, including waiting, doing nothing for now, or choosing a different approach?
- Can I have written information, results and aftercare instructions in a format I can use, including any accessibility or communication support I need?
- What is the total cost in writing, including any follow-ups, and how much time do I have to decide?
Frequently asked questions
Will I definitely need nerve conduction studies?
Do the nerve tests hurt?
Why might no cause be found?
Can nerve damage be reversed?
Why is foot care so important?
Is a neuropathy assessment available on the NHS?
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How we made this page
Medically reviewed by a GMC-registered consultant. Written in plain English, checked against NHS, NICE, GMC and relevant Royal College / specialist-society guidance, and kept under review. No clinic paid to appear on this page, and we publish no pricing. This is general information to help you prepare — it is not a substitute for advice from your own clinician. How we review our guides →
Source hierarchy: UK regulator and NHS/NICE guidance first, then relevant Royal College or specialist-society guidance, then peer-reviewed evidence for procedure-specific figures where available.
Sources & standards: NHS – Peripheral neuropathy diagnosis Diagnosis of peripheral neuropathy (review) – PMC Diagnostic approach to peripheral neuropathy (review) – PMC Brain & Spine Foundation – Peripheral neuropathy
Reviews reflect patients' experience of care, not clinical outcomes. For procedure volumes and outcome data see PHIN.
Last medically reviewed 2026-09-21. Spotted something wrong or out of date? Report an error in this guide.
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