Rare kidney & urinary condition
IgA nephropathy
IgA nephropathy is the world's commonest glomerulonephritis - IgA antibody deposits inflame the kidney's filters - with a course ranging from harmless to kidney failure, and a treatment landscape that has changed rapidly.
Key points
The essentials at a glance.
What to look out for, how the diagnosis is confirmed, who looks after it, and the options that exist.
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01
Classic presentations: visible blood in urine during a sore throat, or incidental microscopic haematuria and protein leak.
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Kidney biopsy confirms the diagnosis and grades activity and scarring (the Oxford MEST-C score).
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Risk of progression is judged by protein leak, blood pressure, eGFR slope and biopsy findings; risk calculators assist.
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Foundation therapy: maximal renin-angiotensin blockade, now often with an SGLT2 inhibitor, plus blood pressure and lifestyle measures.
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Newer options - targeted-release budesonide and other agents - and trials are reshaping treatment for higher-risk disease; sparing use of systemic steroids is guided by specialists.
Understanding it
What it is, and what happens next.
In plain English - what is going on, how specialists confirm it, and the routes to treatment in the UK.
In IgA nephropathy, abnormally glycosylated IgA forms immune complexes that lodge in the glomeruli and provoke inflammation. Some kidneys shrug this off for a lifetime; others scar steadily, and roughly a quarter to a third of patients historically reached kidney failure within 20 to 25 years. Modern care is anchored on identifying who is on the damaging trajectory early, while the interventions have the most to protect.
Confirmed disease deserves nephrology follow-up structured around risk: biopsy-based scoring and proteinuria guide intensity, supportive therapy is pushed to its full potential first, and persistent higher-risk disease now has genuinely expanding options - enteric-release budesonide targeting the gut origin of the abnormal IgA, SGLT2 inhibition, endothelin antagonists and active trials - making specialist review worthwhile even for those told years ago that nothing could be done. In many parts of the UK, routine NHS outpatient referrals for problems like this can take several months, whereas an initial appointment with a private consultant is typically available within around two weeks.
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, speak to them.
Published 2026-09-27 · Next review 2027-09-27
Frequently asked
Common questions about IgA nephropathy.
Quick, plain-English answers to what people ask us most.
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Can you explain what IgA nephropathy is?
IgA nephropathy describes a recognised clinical condition that a doctor can diagnose based on your symptoms, history, and any relevant tests. Its impact varies from person to person, so a proper assessment is the best way to understand your own case. Your GP or a specialist can talk you through what it means in practice.
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What causes igA nephropathy?
IgA nephropathy can develop for a number of reasons, and the exact cause often depends on individual factors such as underlying health, lifestyle, or in some cases injury. A clinician will usually take a history and may arrange tests to identify what's driving it in your case. Understanding the underlying cause helps guide the most appropriate treatment.
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How would I know if I have igA nephropathy?
The presentation of igA nephropathy differs between individuals, but it typically involves noticeable changes that prompt people to seek medical advice. Some people have mild symptoms that come and go, while others experience more persistent or severe effects. A clinical assessment is the most reliable way to confirm what's going on.
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Is igA nephropathy serious or dangerous?
Severity varies considerably, and while many cases are manageable with appropriate care, some can be more serious and need prompt attention. It's best not to self-diagnose severity, as similar symptoms can have very different underlying causes. A clinician can assess your specific situation and advise on the right next steps.
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Does igA nephropathy run in families?
There can be a hereditary element for some people, though many cases occur without any clear family link. If a close relative has been diagnosed with something similar, it's worth mentioning this to your doctor. This can help inform whether any additional monitoring or testing is worthwhile.
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Is there a cure for igA nephropathy?
Many cases can be effectively managed or improved with the right treatment, although whether it can be fully "cured" depends on the underlying cause. Early treatment generally gives the best chance of a good outcome. Your clinician can explain what's realistic to aim for in your specific case.
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What treatment options are available for igA nephropathy?
Depending on the cause and severity, treatment might involve medication, targeted therapy, monitoring, or in some cases a procedure. Most treatment plans start with the least invasive appropriate option and escalate only if needed. Your care team will personalise this based on your assessment and preferences.
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How long does igA nephropathy last?
Duration varies significantly depending on the cause, how promptly it's treated, and individual factors, so it's hard to give a single answer that applies to everyone. Some cases resolve within weeks with treatment, while others need longer-term management. Your clinician can give you a more specific timeframe once they understand your case fully.
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When would I need to see a specialist for igA nephropathy?
If first-line treatment isn't giving enough improvement, or if there are features that suggest a more complex underlying problem, a specialist referral is usually the next step. More invasive treatment is typically considered only after simpler options have been tried and haven't worked well enough. A specialist can assess whether this applies to your situation.
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How quickly can I be seen for igA nephropathy?
It's worth getting checked if things aren't improving, are getting worse, or are causing you ongoing worry or disruption. NHS routine referrals for this can take anywhere from around 20 to 45+ weeks depending on your local waiting list, while most private consultants can offer an initial appointment within about 2 weeks.