Lupus nephritis

About

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Lupus nephritis is a kidney inflammation caused by systemic lupus erythematosus (SLE), an autoimmune disease in which the body’s immune system attacks its own tissues. In lupus nephritis, immune complexes (antibodies bound to antigens) deposit in the glomeruli, causing inflammation, scarring, and impaired kidney function.

It can affect both children and adults with SLE and varies widely in severity — from mild, asymptomatic kidney involvement to rapidly progressive kidney failure. Early detection and treatment are critical to prevent permanent kidney damage.

Is it common?

Lupus nephritis occurs in approximately 30–60% of individuals with systemic lupus, depending on age, sex, and ethnicity. It is more common in women and people of African, Hispanic, or Asian descent. Kidney involvement often develops within the first few years after SLE diagnosis but can occur at any time.

Can it be cured?

There is no cure for lupus nephritis or systemic lupus, but treatment can control inflammation, reduce proteinuria, preserve kidney function, and prevent flares. Long-term monitoring is essential to detect disease activity early and adjust therapy. Some patients may achieve remission, while others may progress to chronic kidney disease.

Causes

What causes Lupus Nephritis?

The condition results from immune system dysfunction:

  • Autoantibodies produced by the body form immune complexes that deposit in glomeruli
  • Complement activation and inflammation damage kidney tissue
  • Genetic predisposition increases susceptibility
  • Environmental triggers, infections, or hormonal factors may provoke flares

The type and location of immune complex deposits determine disease severity and response to treatment.

With Insurance

Nephrology

Your copay
Depending on insurance

Without Insurance

*Price Effective 12/1/2025
$169
Initial Visit
$109
Follow Up

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Symptoms

Symptoms vary depending on severity and may include:

  • Proteinuria (foamy urine)
  • Hematuria (blood in urine)
  • Swelling (edema) in legs, feet, or around eyes
  • High blood pressure
  • Fatigue and malaise
  • Decreased kidney function (detected in lab tests)
  • In severe cases: rapidly progressive kidney failure, fluid overload, and electrolyte disturbances

Many patients may have minimal symptoms initially, making routine monitoring important.

Diagnosis

Diagnosis involves clinical evaluation, laboratory tests, and kidney biopsy:

Laboratory Tests

  • Urinalysis: proteinuria, hematuria, red cell casts
  • Blood tests: serum creatinine, BUN, eGFR
  • Serology: ANA, anti-dsDNA, complement levels (C3, C4)

Imaging

  • Kidney ultrasound to evaluate size and rule out obstruction

Kidney Biopsy

  • Essential for diagnosis and classification
  • Determines lupus nephritis class (I–VI) based on histology
  • Guides therapy intensity and prognosis

Treatment

Treatment depends on lupus nephritis class, disease severity, and kidney function:

Immunosuppressive Therapy

  • Corticosteroids (prednisone) for inflammation
  • Cyclophosphamide, mycophenolate mofetil, or azathioprine for moderate to severe disease
  • Biologics (e.g., belimumab, rituximab) in refractory cases

Supportive Care

  • ACE inhibitors or ARBs for proteinuria and blood pressure control
  • Diuretics for edema
  • Low-sodium diet and lifestyle measures
  • Control of cardiovascular risk factors

Advanced Therapies

  • Dialysis for kidney failure
  • Kidney transplantation for end-stage disease

Early and aggressive treatment can induce remission, prevent flares, and reduce long-term kidney damage.

References

  • Kidney Disease: Improving Global Outcomes (KDIGO) 2021 Clinical Practice Guideline for Glomerular Diseases
  • American College of Rheumatology (ACR) – Lupus Nephritis Guidelines
  • National Kidney Foundation (NKF) – Lupus Nephritis Overview
  • National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK) – Lupus Nephritis
  • Mayo Clinic – Lupus Nephritis Symptoms, Diagnosis, and Treatment
  • American Society of Nephrology (ASN) – Lupus Nephritis Resources
  • UpToDate – “Lupus Nephritis: Clinical Features and Management”
  • StatPearls – Lupus Nephritis Review

Medically reviewed by:

Dr. Javeed Siddiqui, MD, MPH

Dr. Siddiqui is the Chief Medical Officer at TeleMed2U responsible for clinical and technical program development as well as maintaining a thriving telemedicine practice in infectious diseases which includes specialized care of Hepatitis and HIV.

Meet our doctors

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Affordable – with or without insurance

With Insurance

Nephrology

Your copay
Depending on insurance

Without Insurance

*Price Effective 12/1/2025
$169
Initial Visit
$109
Follow Up

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