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Health condition

Paraproteinaemic neuropathy

A paraprotein - an abnormal antibody in the blood - can itself damage peripheral nerves, causing numbness, imbalance and tremor, and needs joint neurology-haematology assessment.

Key points

What matters most, at a glance.

The essentials in plain English - symptoms, when to seek help, who to see and what treatment looks like.

  • Numbness, tingling, unsteadiness and sometimes tremor in someone found to have a paraprotein (often labelled MGUS)

  • IgM paraproteins with anti-MAG antibodies cause a distinctive slowly progressive sensory ataxic neuropathy

  • Every paraproteinaemic neuropathy needs screening for haematological disease, including myeloma, Waldenstrom and AL amyloidosis

  • POEMS syndrome is a rare but crucial diagnosis - a treatable cause of severe progressive neuropathy

  • Management is shared between neuromuscular and haematology specialists

Understanding it

About Paraproteinaemic neuropathy, and what to do next.

Paraproteins are common with age and usually harmless, so when someone with numb feet also has an MGUS the connection is easily dismissed - or overstated. Certain patterns genuinely link: IgM paraproteins with anti-MAG activity produce a characteristic distal, sensory, ataxic neuropathy with tremor that progresses over years; AL amyloidosis causes painful neuropathy with autonomic features and weight loss; and POEMS syndrome pairs a lambda paraprotein with a severe demyelinating neuropathy plus systemic signs - and responds to haematological treatment.

The workup therefore runs on two tracks: neurophysiology to characterise the neuropathy, and haematological assessment - immunofixation, free light chains, skeletal imaging, sometimes VEGF and bone marrow - to define the paraprotein and exclude the treatable disorders hiding behind an MGUS label. Anti-MAG neuropathy itself progresses slowly, and treatment (rituximab in selected cases) is weighed carefully against its pace. If you have both a paraprotein and a progressing neuropathy, a joint or sequential specialist review is the right ask, and worth pursuing rather than letting the two findings sit in separate clinics unconnected.

A quiet reminder

This guide is for information, not medical advice.

Your GP knows your history and can tell you which parts apply to you. If in doubt, see them.

Frequently asked

Common questions about Paraproteinaemic neuropathy.

Quick, plain-English answers to what people ask us most.

  • What is Paraproteinaemic neuropathy?

    Paraproteinaemic neuropathy is a recognised medical condition that affects the body in ways specific to its underlying cause. Getting an accurate diagnosis is the first step towards understanding your options and what to expect.

  • What causes Paraproteinaemic neuropathy?

    The underlying cause can involve a mix of genetic, environmental, and lifestyle factors, and in some cases no single clear cause is identified. Your doctor can help clarify which factors are most relevant to your case based on your history and any test results.

  • What are the symptoms of paraproteinaemic neuropathy?

    Symptoms can vary from mild to significant and often develop gradually, though some people notice a more sudden onset. Because symptoms overlap with other conditions, a proper clinical assessment is important for an accurate diagnosis.

  • Is paraproteinaemic neuropathy serious or dangerous?

    Most cases are manageable with appropriate treatment, though severity varies from person to person. Left unaddressed, some cases can lead to complications, so getting an assessment rather than waiting is generally the safer approach.

  • Is paraproteinaemic neuropathy hereditary or genetic?

    Some cases have a genetic component that runs in families, while others develop without any inherited link, arising instead from environmental or lifestyle factors. If you have a strong family history, mentioning this to your doctor can help guide whether genetic assessment is worthwhile.

  • How is paraproteinaemic neuropathy treated?

    Treatment approaches vary depending on severity and individual circumstances, and may include lifestyle changes, medication, or referral to a specialist for more targeted therapy. Your GP or specialist will tailor a plan based on your specific situation.

  • How long does paraproteinaemic neuropathy last?

    Duration varies — some cases are short-lived and resolve fully with treatment, while others are longer-term or chronic conditions managed over time. Your doctor can give you a more specific expectation once they understand your individual case.

  • When is surgery or specialist treatment needed?

    Specialist or surgical treatment is usually considered when simpler treatments haven't controlled symptoms adequately, or when the condition is affecting quality of life or function significantly. A specialist assessment can clarify whether this applies to your situation.

  • When should I see a doctor about paraproteinaemic neuropathy?

    See a doctor if symptoms are new, worsening, or affecting your daily life. On the NHS, routine referrals to a specialist can take 20 to 45 weeks or longer depending on your area; with private healthcare you can typically see a consultant within about 2 weeks, which can be worthwhile if you want a faster diagnosis or reassurance.

  • Can lifestyle changes help manage paraproteinaemic neuropathy?

    Alongside medical treatment, factors such as a balanced diet, regular appropriate exercise, stopping smoking, and managing stress can support recovery and reduce the risk of the condition worsening or recurring. Your healthcare team can advise which lifestyle changes are most relevant to your specific condition.